In our blog posts, we would like to give architects, planners and builders an insight into our products and solutions that are specifically tailored to their needs. At rotec, we are always working to develop innovative and sustainable technologies for the construction industry and thus successfully implement our customers' projects. Visit our website www.rotec-berlin.deto learn more.

Configure a bin enclosure: Plan in 3D and request a quotation

by Karl Marx, rotec Berlin | Oct. 5, 2026 | Products | 0

Plan your trash enclosure in 3D: The rotec configurator helps you with dimensions, features, and container placement. For mesh enclosures with a mesh roof, simply enter your email address and ZIP code to receive a free, no-obligation quote—including delivery but excluding installation—within two minutes.

gitterroste.com: rotec’s new specialist website for grating selection and planning

by Karl Marx, rotec Berlin | Sep 16, 2026 | Gratings, Products | 0 |

The new industry website gitterroste.com helps you with selection and planning: it features products organized by material and application, eight interactive 3D models, technical planning tools, and direct links to the online store. For custom projects, you can send dimensions, sketches, and photos to rotec.

Structural profiles: Selecting, cutting and connecting them correctly

by Karl Marx, rotec Berlin | Sep 12, 2026 | Structural profiles, Products | 0 |

How to properly select, cut, and join structural profiles: A table frame with twelve profile cuts illustrates the process from planning to the bill of materials. With a rotatable 3D view and personalized advice from rotec.

Aluminium profile constructions: Planning, manufacturing and installation

by Karl Marx, rotec Berlin | Sep 12, 2026 | Structural profiles, Metalworking, Products | 0 |

An idea becomes a custom aluminum structure. rotec combines collaborative planning with design, manufacturing, and on-site installation. This guide highlights applications, selection criteria, and the process for submitting a project inquiry.

Renson Linius louvre fabrication: Custom louvre facades from rotec Berlin

by Karl Marx, rotec Berlin | Aug. 4, 2026 | Louvre facades, Air technology, Ventilation grille, Metalworking, Products | 0 |

rotec fabricates Renson Linius aluminium louvres into project-specific louvre facades, ventilation grilles and equipment enclosures. For 30 years, this Berlin-based Renson premium partner has combined system expertise with its own manufacturing and installation experience.

Buy Fences in Berlin: Fence Construction, Wholesale and Retail, and Installation at rotec

by Karl Marx, rotec Berlin | July 29, 2026 | Metalworking, Products, Security fences | 0 |

Fence construction in Berlin with nearly 40 years of experience: rotec supplies double-bar fencing, manufactures fences and gates to customer specifications, and handles installation. Discover solutions for private properties, commercial and industrial sites, wild boar protection, and landfill enclosures.

D40 Ventilation Hood for Underground Garage Ventilation: A Project from Hamburg

by Karl Marx, rotec Berlin | July 18, 2026 | Air technology, Ventilation grille, Products | 0 |

This project example shows a D40 ventilation hood for the underground parking garage ventilation system of an office complex in northern Hamburg. The existing shaft opening was part of the project-specific ventilation concept and was used for air distribution. However, the horizontal grating provided only limited protection against rain, snow, and leaves entering the shaft. For this reason, rotec developed a weather-optimized ventilation hood as a custom design specific to the project. The D40 ventilation hood directs the air through lateral louvered surfaces. At the same time, the slightly domed roof directs precipitation away to the sides. This article explains the initial situation, the structural design, and key planning requirements. Key Points at a Glance: rotec developed and installed the D40 ventilation hood as a custom design specific to this project. Side...

Ventilation hoods as street furniture: Cleverly combining seating and green roofs

by Karl Marx, rotec Berlin | July 18, 2026 | Air technology, Ventilation grille, Products | 0 |

Ventilation hoods, as elements of urban furniture, combine technical ventilation with enhanced quality of life. This article demonstrates how seating areas, backrests, green roofs, open-air spaces, maintenance access, and appropriately designed louvers are planned on a project-by-project basis. rotec develops and manufactures custom solutions for rooftop terraces, courtyards, underground parking garage ceilings, and outdoor areas.

Ventilation grille rain resistance to DIN EN 13030: Rain protection, drainage channels and planning

by Karl Marx, rotec Berlin | July 9, 2026 | Louvre facades, Air technology, Ventilation grille | 0 |

The rain resistance of ventilation grilles is an important consideration for exposed facades, plant rooms, data centres, roof hoods and ventilation hoods. This article explains how rain resistance is assessed under DIN EN 13030, what classes A to D mean, why air velocity on the intake side matters, and when drainage channels, drip edges or water-repellent Renson ventilation grilles such as types 450, 450V, 452, 412 or rotec W11 are appropriate.

Night cooling for data centres: Planning secure ventilation openings

by Karl Marx, rotec Berlin | June 10, 2026 | Louvre facades, Ventilation grille, Products | 0 |

Night cooling requires suitable airflow routes and coordinated building openings. rotec explains how airflow performance, RC2 security, weather protection and noise control determine grille selection. Original photographs and a manufacturing video show the practical implementation. Existing documents and known requirements are sufficient for an initial project discussion.

Ventilation and solar shading for data centres (2026): Reliable airflow, night cooling and energy efficiency

by Karl Marx, rotec Berlin | June 5, 2026 | Louvre facades, Air technology, Ventilation grille | 0 |

Ventilation and solar shading for data centres must meet safety, energy-efficiency and specification requirements. rotec supports architects, specialist designers, facade contractors and main contractors with technical advice, burglar-resistant ventilation grilles, weather louvres, solar shading louvres, floor grilles and project-specific manufacturing in Berlin.

Retrofitting Perimeter Protection in 2026: Outdoor Security with rotec APS

by Karl Marx, rotec Berlin | May 27, 2026 | General, Main contributions, Metalworking, Products, Security fences | 0 |

rotec APS provides retrofittable perimeter protection and professional open-area security for existing fences, walls, gates, access roads, solar parks, industrial sites, outdoor storage areas, and critical infrastructure. The system integrates fence monitoring, electric fencing, sensors, radar, video surveillance, alarm technology, and control center connectivity into a site-specific security solution. This allows existing property boundaries to be technically upgraded, security-related incidents to be detected earlier, and clear response protocols to be established. rotec supports operators from the initial site assessment through consulting, planning, and installation to maintenance, testing, repairs, and service contracts.

Retrofitting Fence Monitoring in 2026: rotec APS Flexiguard for Existing Fences

by Karl Marx, rotec Berlin | May 25, 2026 | General, Railroad projects, Home, Products, Security fences | 0 |

Retrofitting fence monitoring systems is becoming increasingly important for operators of commercial properties, industrial sites, airports, and critical infrastructure. rotec APS Flexiguard transforms existing fences into an active security perimeter. The system detects mechanical attacks on the fence, effectively supplements existing barbed wire, and can forward alerts to camera surveillance, security personnel, or a control center. This transforms a passive fence system into an active solution for modern perimeter security.

Planning Renson acoustic louvres correctly (2026)

by Karl Marx, rotec Berlin | May 18, 2026 | General, Louvre facades, Air technology, Ventilation grille, Metalworking, Products | 0 |

Renson acoustic louvres provide a technical solution for facades, plant rooms, rooftop structures and enclosures, data centres, industrial buildings and car parks where airflow, screening, weather protection and sound insulation must be planned together. This technical article compares the Renson Linius acoustic louvres L.060AC, L.150ACS, L.150ACL, L.170ACS and L.170ACL. It explains sound insulation values, free area, K-factors, applications, installation guidance and common planning mistakes. It also describes how rotec supports technical coordination, advice, supply and installation. The article is intended for architects, design practices, building services engineers, facade contractors, metal fabricators, industrial businesses and building owners looking for a suitable louvre solution for technical building openings.

Renson ventilation grille 411: Planning, specifying and configuring rotec W11 online (2026)

by Karl Marx, rotec Berlin | April 29, 2026 | General, Louvre facades, Air technology, Ventilation grille, Products | 0 |

The Renson 411 ventilation grille corresponds to the rotec W11 ventilation grille. This article covers technical data, installation frames, free area, weather protection, installation, specification text, CAD downloads and the rotec online configurator. It also explains how rotec supports architects, designers, metal fabricators and industrial businesses with ventilation grilles, roof hoods and technical building openings.

Renson ventilation grille configurator 2026: How rotec W11, W12 and other types correspond to Renson models

by Karl Marx, rotec Berlin | April 10, 2026 | General, Main contributions, Louvre facades, Air technology, Ventilation grille, Metalworking, Products | 0 |

The rotec Renson ventilation grille configurator makes it easier to identify the corresponding grille types in the new shop. This article explains why rotec W11 corresponds to Renson type 411, how the W-series naming system works, and what designers, metal fabricators and technical buyers should consider when selecting ventilation grilles and weather louvres. It also shows how established Renson louvre profiles can be combined with custom manufacturing in Berlin, direct configuration and personal technical advice.

Custom-Made Stainless Steel Mirror Sheets: How to Properly Plan for Mirror Sheets Instead of Glass Mirrors

by Karl Marx, rotec Berlin | March 30, 2026 | General, Home, Metalworking, Products | 0 |

Custom-made mirror-polished stainless steel sheets from rotec are the ideal solution when projects require a high-quality mirror finish, yet safety, durability, and precise workmanship are also top priorities. Whether in commercial construction, interior design, public buildings, elevator cabs, or sophisticated design applications: Mirror-polished stainless steel sheets combine an elegant appearance with high durability and great design flexibility. rotec manufactures custom-fit solutions in Berlin and offers a technically sophisticated, comprehensive package—from material selection to fabrication.

To ensure that a stainless steel mirror not only looks great but also remains functional over the long term, the material thickness, dimensions, substrate, finish, and installation must all be carefully coordinated. That is precisely why this article explains what really matters when it comes to custom-made stainless steel mirror sheets, what technical advantages the material offers, what typical applications are, and how planning errors can be avoided from the very beginning.

Planning smoke extraction hoods and ventilation hoods for underground car parks and roof shafts

by Karl Marx, rotec Berlin | March 22, 2026 | Louvre facades, Air technology, Ventilation grille, Products | 0 |

Further roof solutions for daylight, ventilation and smoke and heat exhaust. In addition to smoke extraction hoods, flat roofs can incorporate rooflights for daylight, ventilation, roof access or smoke and heat exhaust. Our article on configuring and comparing flat-roof domes online helps with product selection and technical assessment. Natural ventilation of underground car parks uses openings or ventilation shafts for air exchange. Wind pressure, thermal buoyancy and pressure differences move the air, so a continuously running fan is not required to generate airflow. However, this solution is not automatically suitable for every car park. Size, use, traffic volume, geometry and state building regulations determine the requirements. The openings must also be sufficiently large, appropriately distributed and...

Building envelope systems 2026 | Ventilation, weather protection and noise control from rotec

by Karl Marx, rotec Berlin | Feb. 25, 2026 | Louvre facades, Ventilation grille, Products | 0 |

Building envelope systems

Building envelope systems are essential when ventilation, weather protection, noise control and architectural integration need to be planned together. rotec develops project-specific solutions for industry and architecture, supplying ready-to-install elements for facades, rooftop structures and technical building openings. These functional components direct large volumes of air safely, keep out wind-driven rain and integrate building services neatly into the building envelope. Depending on the application, the design can incorporate acoustic performance, increased strength or security-related functions. Fabrication takes place in Berlin. The supporting structure and structural engineering are generally provided by the client, while rotec is responsible for integrating its own components in accordance with the system requirements.

Acoustic louvres for plant rooms, rooftop installations and car parks

by Karl Marx, rotec Berlin | Feb. 13, 2026 | Louvre facades, Air technology, Ventilation grille, Products | 0 |

Acoustic louvres for plant rooms, rooftop installations, air-conditioning equipment and car parks. rotec supports airflow design, noise control and planning.

Skylights for Flat Roofs: Selection, Prices, and Renovation for Industry Professionals

by Karl Marx, rotec Berlin | Feb. 7, 2026 | Main contributions, Air technology, Products | 0 |

At rotec, you no longer buy skylights for flat roofs based on a hunch, but rather on clear technical criteria and transparent prices. In this article, you’ll learn how to compare around 60,000 fully priced configurations in the rotec online store, what role the number of shells, the mounting ring, and accessories play, and how to seamlessly integrate features like smoke and heat exhaust ventilation (RWA) and roof access into your roofing design. You’ll also receive a practical checklist, learn about common planning mistakes, and get specific tips on how to select the right skylight for new construction or renovation projects.

Expanded metal facades (2026): Planning, installation, costs and practical guidance from rotec

by Karl Marx, rotec Berlin | Feb. 5, 2026 | General, Main contributions, Louvre facades, Metalworking, Products, Security fences, Expanded metal - Expanded metal | 0 |

In modern architecture, façade systems play a decisive role, not only for the aesthetics of a building, but also for its functionality and sustainability. One innovative solution that has become increasingly popular in recent years is the use of expanded metal for façades and climate enclosures on the roof. This technique offers a variety of benefits, from improving energy efficiency to creating unique visual effects. One company leading the way in this field is rotec Berlin, with 35 years of experience in the metalworking industry.

Cutting and Bending Expanded Metal in Berlin

by Karl Marx, rotec Berlin | Feb. 5, 2026 | Metalworking, Products, Expanded metal - Expanded metal | 0 |

Custom expanded metal from Berlin: rotec supplies cut-to-size pieces as well as framed, ready-to-install assemblies for railings and facades, including galvanizing and paint coating according to the agreed-upon specifications. Includes application photos and a checklist for your inquiry.

Sheet Metal Bending and Folding in Berlin: CNC-Folded Parts from rotec

by Karl Marx, rotec Berlin | Jan. 27, 2026 | Perforated plates, Metalworking, Products | 0 |

rotec manufactures bent parts made of steel, stainless steel, and aluminum in Berlin. Learn what matters when it comes to bend radius, drawings, and surface finish. Here’s how to prepare your request for individual parts and production runs.

Trapezoidal profiles made of perforated sheet metal for control joints and concrete floor slabs

by Karl Marx, rotec Berlin | Jan. 21, 2026 | Perforated plates, Metalworking, Products | 0 |

Trapezoidal profiles made of perforated sheet metal for control joints and concrete floor slabs: rotec manufactures folded profiles according to drawings in Berlin and provides support with production-related coordination.

Razor wire (2026): Extended length, installation and practical specification guidance

by Karl Marx, rotec Berlin | Jan. 7, 2026 | General, Railroad projects, Main contributions, Home, Metalworking, Products, Security fences | 0 |

This article provides a practical guide to NATO wire for use in industry, correctional facilities, and security projects. You’ll find clear guidelines on extension length, 52 coils, and coil spacing, as well as installation instructions for fence caps, Y-beams, and existing fences. In addition, the text includes calculation examples, common mistakes, and a checklist for bidding and acceptance.

Acoustic louvres on a high-rise building in Berlin City West | rotec

by Karl Marx, rotec Berlin | Dec. 18, 2025 | General, Louvre facades, Air technology, Ventilation grille, Products | 0 |

Project report from Berlin City West: rotec manufactured and installed acoustic louvres for the rooftop equipment of a high-rise building on Budapester Straße. Includes original photographs, Renson data and planning guidance.

LINARTE wall and facade cladding (2026): Specification and installation throughout Germany with rotec

by Karl Marx, rotec Berlin | Dec. 14, 2025 | Louvre facades, Linarte, Ventilation grille, Products | 0 |

LINARTE wall and facade cladding offers a high-quality solution for commercial and industrial buildings. This article explains how to plan the variants, module spacing and connection details, and how to integrate the supporting structure, rear ventilation, doors and gates. It also includes a practical checklist, common mistakes and how to avoid them, an FAQ and a glossary. rotec manufactures in Berlin and supports your planning, specification and installation throughout Germany.

High-Security Fence (2026) Security fencing and open-area security solutions for industry, with planning and installation services throughout Europe provided by rotec

by Karl Marx, rotec Berlin | Dec. 13, 2025 | General, Railroad projects, Metalworking, Products, Security fences | 0 |

For many industrial facilities, a high-security fence is a key component of outdoor security. This is because valuable materials are often stored outdoors, and at the same time, sites are frequently unmanned at night. This increases the risk, which is why perimeter protection is needed that both deters intruders and triggers an alarm. This is precisely where security fencing and high-security fencing complement each other when viewed as a single system.

Sheet Metal Fabrication in Berlin: Metalworking by rotec

by Karl Marx, rotec Berlin | Dec. 12, 2025 | Perforated plates, Metalworking, Products, Expanded metal - Expanded metal | 0 |

Sheet metal fabrication and metalworking in Berlin: rotec cuts with lasers, bends, and manufactures components from steel, stainless steel, and aluminum according to drawings.

Custom Perforated Sheet Metal 2026: DIN 24041, Cutting and Sheet Metal Fabrication

by Karl Marx, rotec Berlin | Oct. 11, 2025 | General, Perforated plates, Metalworking, Products | 0 |

Custom Perforated Sheets Explained Simply: rotec shows what architects, designers, metal fabricators, and industrial customers should look for in perforated sheets. This article explains types of perforations—such as round, square, slotted, and custom perforations—key DIN standards like DIN 24041, the calculation of open area, materials such as steel, stainless steel, and aluminum, as well as typical applications for facades, ventilation, acoustics, mechanical engineering, storefitting, and industry. It also covers cutting to size, laser cutting, edge finishing, welding, assembly production, hot-dip galvanizing, visible surfaces, deburring, edging profiles, safety gratings, and common design mistakes.

Laser Cutting in Berlin: Custom Laser-Cut Parts from rotec

by Karl Marx, rotec Berlin | Oct. 11, 2025 | General, Main contributions, Home, Perforated plates, Metalworking, Products | 0 |

Laser-cut parts made of steel, stainless steel, and aluminum at rotec in Berlin. Find out what CAD data, tolerances, and specifications for further processing are needed to receive a customized quote.

Welded mesh – large selection of PS mesh available immediately from stock in the rotec Profishop

by Karl Marx, rotec Berlin | Aug. 15, 2025 | General, Railroad projects, Metalworking | 0 |

Welded mesh is indispensable in construction, industry, agriculture, architecture, and landscaping. It offers high stability, a long service life, and a wide range of applications. At rotec Profishop, you’ll find one of the largest selections of welded mesh in Germany—available immediately from stock and in numerous variations.

Effectively Prevent Cable Theft in Solar Parks (2026) with the rotec APS Electric Fence and 9,000-Volt Touch Protection

by Karl Marx, rotec Berlin | Feb 11, 2025 | General, Metalworking, Products, Security fences | 0 |

Effectively preventing cable theft at solar parks will be a must for operators and investors in 2026. That’s because thieves steal copper and, at the same time, cause downtime. In addition, follow-up costs rise because inspections and repairs take time. That’s why security must be part of operational planning—just as much as maintenance and monitoring. rotec supports solar parks in this effort with active perimeter protection and clear alarm systems.

Protecting critical railroad infrastructure: the solution with Securifor high-security fencing

by Karl Marx, rotec Berlin | Dec 17, 2024 | Home, Products | 0 |

The threat to railroads from cable theft.
Protecting critical rail infrastructure is now more important than ever. Cable theft on railroad lines has become a serious problem in recent years, significantly affecting both safety and rail operations. The consequences are far-reaching: delays, train cancellations and high financial losses. In Germany in particular, the theft of copper cables poses a growing risk, as railroad lines are often inadequately secured and therefore an easy target for criminals.

GRP gratings in the railroad sector

by Karl Marx, rotec Berlin | Nov 29, 2024 | General, Railroad projects, Gratings, Main contributions, Metalworking, Products, Security fences | 0 |

GRP gratings are the perfect choice for modern railroad infrastructure. With outstanding properties such as corrosion resistance, electrical insulation and high load-bearing capacity, they are ideal for manhole covers, safety fences, maintenance walkways and train washing systems. Thanks to EBA approval and manufacturer-related product qualification (HPQ) in accordance with DBS 918020, they meet the highest safety and quality standards. Durable, maintenance-free and versatile, GRP gratings offer an economical and sustainable solution that increases the efficiency and safety of your projects. Perfect for purchasers and construction companies.

Perforated sheets available immediately: over 1,000 varieties, cut to size at rotec

by Karl Marx, rotec Berlin | Nov 6, 2024 | General, Perforated plates, Metalworking, Products | 0 |

Perforated sheets available immediately: rotec keeps over 1,000 types of perforated sheets in stock in Berlin and also supports customers with cutting to size, laser cutting, edge finishing, bending, and technical consulting. This article is intended for architects, designers, metal fabricators, facade contractors, industrial companies, and shopfitters who want to purchase perforated sheets quickly, plan reliably, or have them custom-processed.

Custom weather louvres and ventilation grilles | rotec Berlin

by Karl Marx, rotec Berlin | Oct 14, 2024 | Louvre facades, Air technology, Ventilation grille, Products | 0 |

Functional building elements such as weather protection grilles and ventilation grilles play a decisive role in today's architecture and construction. These grilles not only protect against environmental influences and enable optimized air circulation, but also contribute to the aesthetic design of modern buildings. As a leading supplier in metal processing, rotec has been offering innovative and customized grille solutions that meet the individual requirements of each project for more than 35 years.

Rooftop enclosure for air-conditioning equipment: Planning and a project in Frankfurt

by Karl Marx, rotec Berlin | Oct 12, 2024 | Louvre facades, Air technology, Products | 0 |

Project report from Frankfurt: rotec manufactured and installed an enclosure for air-conditioning equipment. Includes guidance on the Hessian Building Code (HBO), planning advice and original photographs.

Renson louvre walls: Manufacturing, installation and projects by rotec

by Karl Marx, rotec Berlin | Oct 11, 2024 | General, Home, Louvre facades, Linarte, Air technology, Ventilation grille, Products | 0 |

For 30 years, rotec in Berlin has been offering comprehensive solutions for the installation and manufacture of Renson slat walls. Particularly noteworthy is our comprehensive service package for: Louvre walls, aluminum facades, parking garages, roof enclosures, air conditioning enclosures, weather protection grilles, Linarte wall claddings

From planning, measurement and production to optional installation throughout Europe - we offer you everything from a single source.

Self-luminous and translucent GRP gratings for creative design

by Karl Marx, rotec Berlin | Oct 10, 2024 | General, Gratings, Home, Louvre facades, Air technology, Products | 0 |

In modern architecture and design, materials that combine functionality and aesthetics are becoming increasingly important. Self-luminous and translucent GRP gratings (glass fiber reinforced plastic) offer precisely these properties and open up a wide range of design options for architects, planning offices, façade builders and designers. The innovative gratings from MM combine the interplay of light and shadow to create unique visual effects. They are being used more and more frequently, especially in the design of façades, stairs and terraces.

Entrance Mats with Tactile Guidance Systems: Consultation, Measurement, and Installation

by Karl Marx, rotec Berlin | Sep 30, 2024 | General, Gratings, Home, Metalworking, Products | 0 |

A tactile entrance mat combines dirt-trapping with wayfinding. rotec supports you with consulting, its own specialists for measurement and installation, and a nationwide on-site measurement service (for a fee).

3200 sqm rotec aluminum gratings for ceiling suspensions: A highlight at Stuttgart 21

by Karl Marx, rotec Berlin | Sep 24, 2024 | General, Railroad projects, Gratings, Main contributions, Home, Louvre facades, Metalworking, Products | 0 |

The major Stuttgart 21 project is one of the largest transportation infrastructure measures in Germany. In addition to the redesign and conversion of Stuttgart Central Station, it also includes the construction of several underground stations, including the underground station at Stuttgart Central Station and Stuttgart Mitte Station. As part of this project, rotec GmbH Berlin supplied a total of 3,200 m² of aluminum grating for the ceiling suspensions, which were specially adapted to the high requirements of Deutsche Bahn.

Type O2 safety gratings: maximum slip resistance for industrial stairs, ramps and bridge decks

by Karl Marx, rotec Berlin | Sep 4, 2024 | General, Railroad projects, Gratings, Home, Metalworking, Products | 0 |

Type O2 safety gratings: maximum safety and versatility for industrial applications
Type O2 safety gratings from rotec are the perfect construction elements for demanding industrial and construction environments where slip resistance and stability are of crucial importance. With their first-class R13 slip resistance, they guarantee maximum safety even under extreme conditions.

Stainless steel pigeon spikes from rotec, durable pigeon protection compared to plastic spikes

by Karl Marx, rotec Berlin | Sep 2, 2024 | General, Railroad projects, Home, Metalworking, Products | 0 |

Stainless steel pigeon spikes from rotec are the ideal solution for keeping pigeons away from buildings and ensuring animal welfare at the same time. Pigeons are a widespread problem in urban areas. Their settling on buildings not only leads to unsightly soiling, but also poses a considerable health risk. In this article, we would like to explain the advantages of stainless steel pigeon spikes and compare them with the plastic alternatives. We also shed light on the health risks posed by pigeon droppings and why reliable pigeon repellent is essential.

Sand plates made of aluminum and steel

by Karl Marx, rotec Berlin | Aug 13, 2024 | General, Gratings, Metalworking, Products | 0 |

Aluminum or hot-dip galvanized steel? Compare materials, standard dimensions, and selection criteria. All rotec sand sheets are available individually.

Razor wire training rolls: Safe training and effective deterrence for military and police training

by Karl Marx, rotec Berlin | Jul 20, 2024 | General, Main contributions, Metalworking, Products, Security fences | 0 |

In military and police training facilities, the safety of trainees is a top priority. Conventional NATO wire (also known as razor wire) with razor-sharp blades poses a considerable risk of injury, particularly during handling and training. To minimize this risk and still offer realistic training conditions, rotec presents the innovative solution: reusable razor wire training reels without blades.

Checker plate steps with CE marking: DIN EN 1090 and manufactured by rotec

by Karl Marx, rotec Berlin | Jul 17, 2024 | General, Gratings, Metalworking, Products | 0 |

CE-marked checker plate steps from rotec: Learn when DIN EN 1090 applies, what EXC1 and EXC2 mean, and what information is required for planning, design, and manufacturing.

Double wire mesh industrial fencing, you should pay attention to this when buying your fence!

by Karl Marx, rotec Berlin | Jun 28, 2024 | General, Home, Metalworking, Products, Security fences | 0 |

The popularity of double wire mesh as a fencing system in Europe is undisputed. This popularity results from the robust construction, the fact that they are largely maintenance-free and their high cost-effectiveness. Despite a higher initial investment compared to wire mesh fences, the investment pays off in the long term. Traditionally, the double wire mesh has been manufactured over four decades with a mesh size of 50×200 mm, two cross wires made of 8 mm round steel and a vertical bar made of 6 mm round steel. After production, the mats are hot-dip galvanized in a full bath, making them particularly robust and durable - a hallmark of rotec quality.

Custom ventilation grilles with fast delivery in 2026: Weather louvres from rotec

by Karl Marx, rotec Berlin | Jun 10, 2024 | Louvre facades, Air technology, Ventilation grille, Products | 0 |

Custom ventilation grilles with fast delivery: rotec manufactures high-quality ventilation grilles and weather louvres in Berlin using Renson systems. Customers can configure suitable grille types online, check technical data and prepare a focused enquiry. These products are particularly suitable for facades, plant rooms, roof hoods, refurbishment and urgent construction projects.

Parking garage louvre façade: Renson Linius L.050 louvre blade & perforated metal panels

by Karl Marx, rotec Berlin | Apr 4, 2024 | General, Home, Louvre facades, Ventilation grille, Products | 0 |

In the vibrant heart of Rotterdam, a metropolis recognized worldwide for its pioneering architecture and progressive approach to urban development, rises the "Uptown Rotterdam" parking garage project. This flagship project is an impressive illustration of how the symbiosis of modern technology and aesthetic design can shape the future of urban infrastructure. Through the clever integration of Renson brand louvers together with first-class perforated metal panels, this building sets new standards in the design of parking garages.

Aluminum floor grilles: Efficient ventilation in server rooms

by Karl Marx, rotec Berlin | Mar 24, 2024 | General, Gratings, Home, Air technology, Ventilation grille, Products | 0 |

A focus on application flexibilityIn the world of technology, where server rooms are at the heart of our digital infrastructure, efficient and reliable cooling is essential. This is where aluminum floor grilles play a crucial role. The AV500 model from Grada is a prime example of high-quality solutions that meet both technical and aesthetic requirements.

Electric Fence for Critical Infrastructure 2026: Perimeter Protection with rotec APS

by Karl Marx, rotec Berlin | Mar 14, 2024 | General, Railroad projects, Home, Metalworking, Products, Security fences | 0 |

rotec APS electric fencing protects critical infrastructure, power plants, substations, solar farms, data centers, municipal utilities, and sensitive industrial sites through visible deterrence, technical detection, and alarm transmission. rotec supports operators with consulting, asset assessments, system selection, installation, maintenance, testing, repairs, and service contracts. This results in site-specific perimeter protection that effectively integrates existing fencing systems, gates, access roads, camera surveillance, alarm technology, and connection to control centers.

Night setback in data centers: security and efficiency with Renson 431RC2 burglar-resistant ventilation grilles

by Karl Marx, rotec Berlin | Mar 1, 2024 | General, Home, Louvre facades, Air technology, Ventilation grille, Products | 0 |

Lowering the temperature in data centers at night is an advanced method of reducing operating costs and significantly improving energy efficiency. In conjunction with burglar-resistant ventilation grilles such as the type 431RC2, certified to DIN EN 1627, this opens up an innovative way of ensuring security and efficiency in equal measure. .....

Stainless Steel Mirrors in the Riding Arena: Properly Planning Installation, Substrate, and Reflective Effect

by Karl Marx, rotec Berlin | Feb 5, 2024 | General, Metalworking, Products | 0 |

Stainless steel mirrors in indoor riding arenas are a safe and durable solution when a clear mirror effect is required but glass is not the best choice for safety reasons. In equestrian sports in particular, mirrors must withstand heavy loads while also enabling reliable visual monitoring. Using a real-world example, rotec demonstrates why, when it comes to mirror-polished stainless steel sheets, it is not only the material but, above all, the substrate, format, and installation that determine the final result.

Innovation in tear plate and checker plate processing

by Karl Marx, rotec Berlin | Jan 29, 2024 | General, Gratings, Metalworking, Products | 0 |

Today I'm taking you on a little journey through time in our blog. I recently watched one of our old YouTube films showing the processing of tear plates at rotec. It was amusing to watch this movie, which I had made myself a decade ago - with a dramatically exaggerated soundtrack that I'm sure no one would choose today. At the time, my YouTube video creation skills were still in their infancy, making this movie one of my first projects in this area.

LINARTE privacy fence with LED lighting

by Karl Marx, rotec Berlin | Jan 23, 2024 | General, Louvre facades, Linarte, Ventilation grille, Products, Security fences | 0 |

Linarte privacy screen Elegance meets functionality: The LINARTE privacy fence from Renson - Exclusively at rotec Berlin Welcome to our blog! Today I would like to introduce you to something very special: the LINARTE privacy fence with LED lighting from Renson. As the exclusive contractual partner of Renson in Germany, rotec Berlin offers you these extraordinary fences that perfectly combine design and privacy. A masterpiece of aesthetics The LINARTE series is more than just a privacy fence. It is a statement from Renson for high-quality wall cladding and slatted walls. With its clear, linear aesthetics, the...

Night cooling (2026): Efficient cooling for buildings, schools and nurseries

by Karl Marx, rotec Berlin | Dec 13, 2023 | Louvre facades, Air technology, Ventilation grille, Products | 0 |

Night cooling, also known as night cooling, is an innovative method of air conditioning for buildings, schools, kindergartens and homes that is used particularly in hot summer months. It is an environmentally friendly and cost-efficient solution that is primarily used in modern buildings such as data centers, schools, kindergartens and offices.

How night cooling works
Night cooling uses the cooler temperatures of the night to cool the interior of buildings. This natural method of building air conditioning reduces the need for artificial air conditioning, resulting in significant energy savings.

Ventilation grilles for curved buildings: Linius louvres at the Galapagos project in Leiden

by Karl Marx, rotec Berlin | Nov 23, 2023 | Louvre facades, Ventilation grille, Products | 0 |

Curved Linius louvres for curved buildings: The Galapagos project in Leiden and a louvre facade installed by rotec in Potsdam show how ventilation, screening and architecture can work together.

Metal cellar partitions: Available immediately from stock in Berlin

by Karl Marx, rotec Berlin | Nov 2, 2023 | General, Home, Metalworking, Products, Security fences | 0 |

Metal basement partition walls available immediately from our Berlin warehouse: rotec keeps large quantities of mesh panels and doors in stock and handles installation nationwide. Learn what matters when it comes to layout, materials, and installation.

rotec Klima enclosure louvre wall in Frankfurt with impressive panorama

by Karl Marx, rotec Berlin | Oct 19, 2023 | General, Main contributions, Louvre facades, Ventilation grille, Metalworking, Products | 0 |

At the heart of the impressive skyline of Frankfurt am Main stands an impressive testimony to technical expertise and design innovation: a louvre wall façade, designed, planned and installed by rotec, fitted with louvres from our long-standing premium partner Renson.

For 35 years, rotec has been shaping the slatwall industry, bringing unmatched experience and expertise to the table. Our continuous commitment to the highest quality has made us a leading player in the field. Every project we complete reflects our firmly held values of consistency, precision and excellence.

Ventilation grilles and weather louvres (2026): Manufacturing at rotec in Berlin

by Karl Marx, rotec Berlin | Oct 14, 2023 | Louvre facades, Air technology, Ventilation grille, Products | 0 |

For anyone involved in any way with the use or processing of ventilation grilles, rotec is the right partner. Our expertise extends to 35 years of experience in the construction of ventilation grilles and weather louvers, and we are proudly celebrating our 35th anniversary this fall.

rotec sheet metal cutting and sheet metal processing in Berlin - your specialist for precision

by Karl Marx, rotec Berlin | Oct 6, 2023 | General, Gratings, Home, Perforated plates, Metalworking, Products | 0 |

Sheet metal cutting and sheet metal processing in Berlin - your expert for customized solutions
Sheet metal cutting and sheet metal processing in Berlin play a central role in many industries. At rotec, we offer precise and fast sheet metal cutting and comprehensive sheet metal processing for a wide range of applications. Whether one-off production or large series, our experienced team and modern machines ensure that your metal projects are implemented precisely and on time. With a large stock of materials and advanced technologies, we are your reliable partner for sheet metal processing in Berlin.

Stair tower cladding with the rotec facade grating type Berlin: aesthetics and functionality in harmony

by Karl Marx, rotec Berlin | Oct 5, 2023 | Gratings, Louvre facades, Metalworking, Products | 0 |

Staircases are not only functional elements in buildings, but often also architectural highlights. Their cladding and enclosure require special solutions that are both aesthetically pleasing and functional. In this context, the rotec facade grating type Berlin proves to be an outstanding choice to meet these requirements.

Heavy-Duty Grates from rotec Berlin: Design, Load Capacity, and Custom Manufacturing

by Karl Marx, rotec Berlin | Oct 4, 2023 | Gratings, Metalworking, Products | 0 |

Heavy-duty gratings from rotec Berlin for industry, transportation, and special projects: Expertise in load-bearing capacity, support systems, materials, and custom designs.

Type Berlin facade grating: Open aluminium facades with a continuous grid

by Karl Marx, rotec Berlin | Oct 3, 2023 | Gratings, Louvre facades, Metalworking, Products | 0 |

Large aluminium facades with a grid that continues across panel boundaries: this is what rotec Type Berlin facade grating is designed for. It requires no edge banding and allows panels up to 6,000 × 1,284 mm. The details are essential to a successful facade design. Drawing on 38 years of experience with gratings, Karl Marx explains how this construction differs from welded aluminium gratings and the benefits of the press-locked design for cut-outs, finishes and installation. The article also covers discreet fixings and key planning considerations. Original photographs, the rotec film and references ranging from stair towers to Stuttgart 21 illustrate the details.

35 years of rotec GmbH: A milestone in industrial metal processing

by Karl Marx, rotec Berlin | Oct 2, 2023 | General, Metalworking, Products | 0 |

For 35 years now, the name rotec has stood for quality, reliability and innovation in the metalworking industry. Our journey began in 1988, when we set ourselves the goal of developing not only metal products, but solutions for our customers

Night ventilation for buildings: Natural cooling and energy savings

by Karl Marx, rotec Berlin | Sep 21, 2023 | General, Louvre facades, Air technology, Ventilation grille, Products | 0 |

Night ventilation uses cool outdoor air to reduce heat in buildings during summer. Discover how rotec creates secure ventilation openings with protection against weather, insects and break-ins.

Long throw nozzles from Grada ensure optimum air flow

by Karl Marx, rotec Berlin | Aug 31, 2023 | General, Louvre facades, Air technology, Ventilation grille, Products | 0 |

The comfort and quality of indoor air in public facilities are more than just a luxury; they are in fact a decisive factor for people's health and well-being. In large premises such as shopping malls and sports halls, the requirements for air conditioning are particularly high. In this blog article, we want to put the spotlight on the innovative jet nozzles from the Belgian company Grada, which offer significant advantages in these application areas.

Rotec technical enclosure in Hamburg with Renson lamella L.120.01

by Karl Marx, rotec Berlin | Aug 30, 2023 | Louvre facades, Ventilation grille, Products | 0 |

The requirements for modern air conditioning unit enclosures are diverse. In addition to the aesthetic component, technical factors such as span width, material resistance and ease of installation also play a decisive role. In a completed project in Hamburg on Anckelmannstraße, Rotec was able to master these challenges with aplomb. The key role was played by the L.120.01 louvre blade from Renson, one of our long-standing premium partners.

Aluminum lamella facade in Potsdam

by Karl Marx, rotec Berlin | Aug 28, 2023 | General, Home, Louvre facades, Ventilation grille, Products | 0 |

Façades are the face of a building and tell a lot about its function and aesthetics. In modern architectural developments, great importance is attached to sustainable, aesthetically pleasing and functional façade solutions. Louvre façades made of aluminum are particularly popular, as they can be used both as privacy screens and to control the flow of light and air.
In this blog article, we at rotec, as a 25-year premium partner of the Belgian company Renson, would like to introduce you to the high-quality aluminum façades with Renson L.050 HF slats that were installed at the swimming pool at Stern in Potsdam.

Acoustic louvre wall in Berlin: Planning enclosures for air-conditioning equipment

by Karl Marx, rotec Berlin | Aug 25, 2023 | General, Louvre facades, Ventilation grille, Products | 0 |

An acoustic louvre wall in Berlin for air-conditioning and rooftop equipment: This technical article covers planning, airflow, acoustic requirements, and manufacturing and installation by rotec.

SUNCLIPS solar shading louvres for schools and office buildings

by Karl Marx, rotec Berlin | Aug 24, 2023 | Louvre facades, Ventilation grille, Products | 0 |

SUNCLIPS solar shading louvres provide external shading for schools and office buildings. A school project in Luxembourg illustrates key planning and fixing considerations. rotec designs, manufactures and installs your complete system using Renson louvres.

Shaft smoke extraction for elevators

by Karl Marx, rotec Berlin | Aug 17, 2023 | General, Louvre facades, Air technology, Ventilation grille, Products | 0 |

The rotec roof hatch RW3000 was developed in 2018 especially for shaft smoke extraction for elevators on flat roofs. The motor of the closable roof hatch can be controlled by any on-site SHEV system or manually, allowing flexible control.

The magic invisible garage doors with Linarte wall cladding

by Karl Marx, rotec Berlin | Aug 10, 2023 | Louvre facades, Linarte, Products | 0 |

When you think of facade cladding, garage doors probably don't immediately come to mind. However, Linarte wall cladding systems set new standards in the architecture and design industry by making garage doors elegant and virtually invisible.

Custom curved and rounded ventilation grilles

by Karl Marx, rotec Berlin | Aug 1, 2023 | Louvre facades, Ventilation grille | 0 |

Contemporary design is constantly evolving and increasingly requires customized shapes that give buildings a unique aesthetic. In this context, rotec has created an innovative solution that allows architects to realize their creative visions by means of a curved slat wall.

Linarte facade with integrated LED lighting

by Karl Marx, rotec Berlin | May 9, 2023 | Louvre facades, Linarte, Products | 0 |

In Berlin Friedrichshain, we recently implemented an exciting project in which we used the aluminum façade system "Linarte" from the Belgian manufacturer RENSON. This innovative facade cladding is characterized by its integrated LED lighting, which gives the buildings a special touch at night. Linarte is a high-quality façade system in which either wooden elements or LED strips can be incorporated into the recesses of the vertical slats. In this project, we chose the LED strips, which were installed in the house passage. The lighting provides not...

Acoustic louvres in Leipzig: Retrofitting a rooftop installation

by Karl Marx, rotec Berlin | May 9, 2023 | Louvre facades, Air technology | 0 |

This reference project in Leipzig shows how acoustic louvres can be retrofitted without impairing rooftop equipment. The key requirement was a solution that reduced noise while maintaining the necessary airflow. The article explains the existing conditions, technical objectives and clear division of responsibilities between the supporting structure provided by the client and the installation of the louvre system by rotec. It offers a practical example for designers, operators and building owners seeking to improve the acoustic performance of existing installations.

Linarte project in Berlin

by Karl Marx, rotec Berlin | Apr 23, 2023 | Linarte, Products | 0 |

In Friedrichshain, an impressive façade cladding with integrated LED lighting was created using the high-quality aluminum façade system "Linarte" from RENSON. The Belgian company is known for its innovative and aesthetic solution, in which recesses in the vertical slats provide space for wooden elements or LED strips. in the interior. In this project, LED strips were installed in the house passage. When darkness falls, the dark house passage is illuminated with pleasant LED light. A light sensor ensures that the lighting is automatically activated when darkness sets in. rotec Berlin takes care of the configuration and planning of the façade elements for resellers and offers installation services nationwide through their experienced installation teams. Discover the possibilities of Linarte facade systems and be inspired by the combination of design and functionality. Contact rotec Berlin for more information at 030 7890390 or info@rotec-berlin.de and learn how this façade cladding solution can add that certain something to your project...

Nighttime Cooling for Schools: Planning RC2 Ventilation Grilles Safely

by Karl Marx, rotec Berlin | Apr 16, 2023 | Air technology, Ventilation grille | 0 |

Planning Nighttime Cooling for Schools the Right Way: This technical article explains air pathways, RC2 grilles, control systems, and retrofitting. Includes a bidding checklist and 14 FAQs.

Intrusion-resistant ventilation grilles for data centers

by Karl Marx, rotec Berlin | Apr 15, 2023 | Air technology, Ventilation grille | 0 |

Burglary-resistant ventilation grilles for data centers protect security-critical building openings without compromising necessary airflow. Particularly in server rooms, technical centers, and industrial buildings, airflow, weather protection, access control, clear cross-sectional area, and installation conditions must be carefully coordinated. rotec supports architects, MEP engineers, security planners, facade contractors, metal fabricators, and facility operators in selecting suitable RC2 and RC3 ventilation grilles for demanding projects.

Poke-proof louvre façade for gas storage and transformer stations

by Karl Marx, rotec Berlin | Apr 14, 2023 | Louvre facades, Ventilation grille | 0 |

We at rotec GmbH Berlin are proud to set innovative standards in the field of façade design. Our latest project, the development of an opaque and puncture-proof louvre wall, sets new standards for functional and aesthetic solutions. The façade, specially developed for a gas storage facility in Freiberg, Saxony, combines safety with modern design. was developed for a gas storage facility in Freiberg (Saxony). When selecting the components, we opted for the tried-and-tested Renson L.033V slat.

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