What is a composite roof panel?

A composite roof panel is a lightweight, durable and long-lasting roofing solution manufactured from Glass Fiber Reinforced Polyester (CTP/GRP/FRP). Thanks to its excellent corrosion resistance, it is widely used in industrial, commercial and agricultural buildings.

What is the difference between CTP roof panels and metal roof panels?

Unlike metal roofing, CTP roof panels do not rust or corrode and require minimal maintenance. They also offer excellent resistance to UV rays, moisture and chemicals while providing a lighter structure.

Where are composite roof panels used?

Composite roof panels are widely used in factories, warehouses, logistics centers, agricultural buildings, aircraft hangars, sports facilities, commercial buildings and industrial plants.

Do you manufacture trapezoidal roof panels?

Yes. Sterplas manufactures custom-sized CTP/GRP composite trapezoidal roof panels according to project requirements.

Do you manufacture translucent roof panels?

Yes. We produce translucent composite roof panels that maximize natural daylight inside buildings.

Do you manufacture tile-effect composite roofing panels?

Yes. We offer tile-effect composite roofing panels in various profiles and finishes for architectural applications.

UV dayanımı var mı?

Evet. UV dayanımlı Gelcoat kaplama sayesinde paneller dış ortam koşullarına uzun yıllar dayanıklılık göstermektedir.

Can the panels be manufactured for chemically aggressive environments?

Yes. Depending on the application, Isophthalic or Vinyl Ester resin systems can be used to provide enhanced chemical resistance.

Do composite roof panels rust?

No. Since they are made from glass fiber reinforced polyester, they are completely resistant to rust and corrosion.

Can you manufacture custom-sized roof panels?

Yes. All composite roof panels can be manufactured according to customer drawings and project specifications.

Do you offer OEM manufacturing?

Yes. Sterplas provides OEM and private label manufacturing services for companies wishing to market products under their own brand.

Can the panels be manufactured in custom RAL colours?

Yes. We can manufacture composite roofing panels in a wide range of RAL colours upon request.

Can you manufacture fire-retardant roofing panels?

Yes. Fire-retardant resin systems can be incorporated depending on project requirements.

Do you provide installation support?

Yes. Technical guidance and installation support can be provided depending on the project scope.

What information is required for a quotation?

To prepare a quotation, we generally need the panel type, dimensions, application area, required quantity and technical drawings if available.

Composite Roofing Panels (CTP / GRP / FRP)

Lightweight, Durable and Long-Lasting Roofing Solutions for Industrial and Commercial Buildings

Since 1986, Sterplas has been manufacturing high-quality CTP (Glass Fiber Reinforced Polyester), GRP and FRP composite roofing panels for industrial facilities, factories, warehouses, agricultural buildings and commercial projects.

Our composite roofing panels provide excellent corrosion resistance, UV protection, lightweight construction and a long service life, making them a reliable and cost-effective alternative to conventional metal roofing systems.

Available in trapezoidal profiles, roof tile designs, translucent daylight panels and custom profiles, Sterplas composite roofing panels deliver outstanding performance even under the most demanding outdoor conditions.

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Why Sterplas?

✔️ Composite manufacturing expertise since 1986
✔️ Engineering-driven product development
✔️ Custom manufacturing for project-specific requirements
✔️ OEM & Private Label manufacturing
✔️ In-house mold design and tooling capabilities
✔️ Low and high-volume production
✔️ Premium quality raw materials
✔️ Experienced manufacturing team
✔️ International export experience
✔️ On-time delivery
✔️ Long-term business partnership

Why Composite Roof Panels?

Roof systems are exposed to rain, snow, sunlight, temperature fluctuations and chemical environmental conditions throughout their service life. Conventional metal roofing systems may corrode over time, paint coatings may peel off and regular maintenance may become necessary.

Sterplas CTP/GRP composite roof panels provide outstanding resistance against harsh environmental conditions and deliver reliable performance for many years.

Corrosion and rust resistant
UV resistant
Excellent chemical resistance
Lightweight structure reduces roof load
High impact resistance
Long service life
Low maintenance costs
Resistant to moisture and temperature changes
Custom dimensions available
Modern and aesthetic appearance

Advantages of Composite Roofing Panels

Sterplas composite roofing panels are safely used in a wide range of projects, from industrial facilities to agricultural buildings.

Superior Corrosion Resistance

Does not rust in humid, salty, or chemically aggressive environments.

UV Resistance

Maintains its surface properties even after years of exposure to sunlight.

Lightweight Structure

Provides easier transportation and installation thanks to its lower weight compared to metal roofing systems.

Long Service Life

Maintains its original performance for many years when properly installed.

Low Maintenance Cost

Requires no painting, rust removal, or intensive maintenance.

Custom Manufacturing

Can be manufactured in custom dimensions, colors, profiles, and thicknesses according to project requirements.

Applications

Manufacturing Facilities
Provides a durable, low-maintenance and long-lasting roofing solution for manufacturing plants and industrial facilities.
Warehouses & Logistics Centers
Its lightweight structure reduces the load on the building while ensuring reliable performance for many years in large-span warehouse buildings.
Agricultural Buildings
Offers excellent resistance against moisture, ammonia and harsh environmental conditions in livestock farms, poultry houses, greenhouses and agricultural storage facilities.
Industrial Plants
Delivers superior corrosion resistance for chemical plants, power plants, wastewater treatment facilities and heavy industrial buildings.
Aircraft Hangars
Ideal roofing solution for aircraft hangars, maintenance hangars and large-span steel structures thanks to its lightweight and high-strength construction.
Sports Facilities
Suitable for indoor sports halls, swimming pools and multi-purpose sports complexes requiring long service life and low maintenance.
Commercial Buildings
Provides an aesthetic appearance together with high durability for shopping malls, showrooms, office buildings and commercial facilities.
Industrial Projects
Manufactured with custom dimensions, profiles and color options for OEM applications and project-specific industrial buildings.

Quality & Performance

Sterplas composite roof panels are manufactured using high-quality fiberglass, polyester resin and protective gelcoat technology in accordance with international quality standards.

Thanks to the premium raw materials used during production, our panels offer:

High mechanical strength.
Excellent resistance to corrosion and rust.
Long-lasting color and surface protection against UV radiation.
Suitable for use in chemically aggressive environments.
Lightweight structure for faster and easier installation.
Low maintenance requirements.
Long service life.
High resistance to impact and vibration.
Reliable performance in all weather conditions.

Custom Manufacturing & Design

In addition to standard composite roofing panels, Sterplas also offers fully customized manufacturing solutions tailored to specific project requirements.

According to your project's technical specifications, we can produce:

Trapezoidal profile roofing panels
Tile-pattern composite roofing panels
Translucent (light-transmitting) roofing panels
Custom wave profiles and panel designs
Various panel thicknesses
Production in any RAL color
UV-resistant surface options
Panels compatible with different installation systems
Prototype and mass production
OEM & Private Label manufacturing

PRODUCTION EXAMPLES

Sterplas manufactures CTP/GRP/FRP composite roofing panels tailored to the technical requirements of each project.

From trapezoidal roofing panels and tile-profile composite panels to translucent daylight panels and custom profile solutions, we offer a wide range of composite roofing products.

Designed for factories, warehouses, agricultural buildings, aircraft hangars and commercial facilities, our composite roofing systems provide high durability, long service life and low maintenance costs, delivering reliable roofing solutions for demanding applications.

Frequently asked questions

Composite Roofing Panels

Let's Develop the Right Composite Roofing Panel Solution for Your Project

Since 1986, Sterplas has been manufacturing high-quality CTP/GRP/FRP composite roofing panels for industrial facilities, commercial buildings, agricultural structures, and custom projects.
Whether you need standard trapezoidal roofing panels or a fully customized composite roofing system, our engineering team is ready to support you throughout the entire process—from design and engineering to manufacturing and delivery.

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REFERENCES

Sterplas CTP/GRP/FRP composite roofing panels are trusted by industrial companies, manufacturing facilities, agricultural enterprises, and commercial projects across Türkiye and international markets.

With nearly 40 years of experience in composite manufacturing, we approach every project with an engineering-focused mindset, delivering durable, high-performance, and customized roofing solutions.

Thanks to our high-quality raw materials, experienced production team, and customer-oriented approach, Sterplas continues to be one of the trusted solution partners in the composite manufacturing industry.

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