Steel is widely used for industrial roofing, but it has major weaknesses. Its susceptibility to corrosion is critical: as soon as the protective layer is damaged, rust sets in rapidly, especially in humid, chemical, or coastal environments. Its high weight complicates handling, increases the loads on structures, and necessitates more robust foundations. Finally, its electrical and thermal conductivity creates safety risks in electrical environments and promotes condensation.
Aluminum is lighter than steel, but it is still a conductor of electricity and heat. It is vulnerable to galvanic corrosion when in contact with other metals and can easily deform under impact. Its high thermal conductivity leads to condensation problems and limits its effectiveness in demanding environments.
Wood, while a traditional material, is poorly suited to harsh environments. It absorbs moisture, rots, warps, and is susceptible to insect and fungal attacks. To extend its lifespan, it requires costly and environmentally harmful chemical treatments. Its durability remains limited, often less than 20 years under difficult conditions.
GRP (Glass Reinforced Plastic) sheets are manufactured using a continuous molding process, combining high-quality glass fibers with thermosetting resins. They offer a lightweight, strong, corrosion-resistant, and non-conductive structure, perfectly suited to industrial, chemical, and coastal environments. Their finish can be translucent to diffuse natural light or opaque for complete protection.
Our range includes: Translucent corrugated sheets: allow light to pass through while protecting against the elements. Colored opaque sheets: available in green, yellow, gray, red, or upon request. Flat sheets: suitable for facades and architectural structures. Anti-slip sheets: ideal for traffic areas and platforms.
Property | Steel / Aluminum / Wood | FRP/GRP Sheets |
Weight | Heavy (7.85 g/cm³ steel) | ~1.8 g/cm³ - 75% lighter |
Corrosion | Rust, oxidation, rotting | Total immunity |
Electrical conductivity | Conductive | Non-conductive |
Thermal conductivity | High ? condensation | Low ? insulating |
Maintenance | Painting, galvanization, regular treatments | Almost none |
Service life | 10-20 years depending on conditions | 25-50+ years |
Chemical resistance | Low protection | Excellent (acids, alkalis, solvents) |
UV resistance | Degradation, discoloration | Integrated protection |
Installation | Heavy, requires welding and equipment | Simple, bolting, lightweight |
Life cycle cost | High (frequent maintenance) | Reduced (zero maintenance) |
Property | FRP/GRP Value | Remark |
Width | Up to 1500 mm | Suitable for industrial roofing |
Length | No restriction | Continuous manufacturing possible |
Thickness | 1 - 4 mm | Choice depending on load and use |
Glass content | ? 25% | Ensures mechanical strength |
Resins used | Polyester, isophthalic, vinyl ester | Chemical and UV resistance |
UV protection | Integrated | Increased outdoor longevity |
Available colors | Clear, translucent, opaque | Aesthetic customization |
Contact us today to discuss your project and discover how our PRV/GRP solutions can transform your infrastructure.
At MJS NEGOCE, we understand that choosing composite materials for your projects can raise many questions. To best support you, we have compiled answers to the most frequently asked questions from our clients. This section is designed to provide you with clear and transparent information about our GRP/FRP products, our lead times, warranties, and technical support. Our goal is to eliminate any uncertainty and allow you to make confident decisions, knowing you are working with a reliable and experienced partner.
What are your delivery times? Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts. Separated they live in Bookmarksgrove right at the coast
Yes. All our GRP/PRV composites are certified according to ISO and ASTM standards. Each batch is audited and inspected before shipment. We guarantee complete traceability of raw materials and strict compliance with manufacturing standards.
Unlike steel, wood, or aluminum, our composites offer:
Yes. We don't just sell materials. Our team supports each client with:
Absolutely. Our composites are designed to withstand the most demanding environments:
We work with a wide range of clients:
