FRP roofing sheets — also called fiberglass or “fiber” sheets — are one of the most widely used roofing materials for factories, warehouses, poultry and dairy sheds, car parks and canopies across Pakistan. They are light, rust-free and, in translucent versions, let natural daylight into the building. But prices vary a lot between suppliers, and the cheapest sheet is often the one that turns yellow, brittle and leaky within a few summers.
This guide explains what decides the price of FRP roofing sheets in Pakistan, how they compare with the alternatives, and how to choose sheets that last.
What Is an FRP Roofing Sheet?
An FRP roofing sheet is made from glass fibre reinforcement bonded in a polyester resin and formed into a flat or corrugated profile. Sheets can be translucent (to let daylight in) or opaque, and are usually made to match the profile of common metal roofing sheets so they can be installed side by side.
FRP Roofing Sheet Price in Pakistan: What Decides the Cost
FRP sheets are generally priced per square foot or per running foot, but the rate depends on several factors:
1. Thickness and weight
Thicker, heavier sheets contain more glass and resin, carry more load and last longer. Very thin, cheap sheets are the main cause of early cracking and sagging.
2. Glass content and resin quality
Two sheets of the same thickness can perform very differently. A higher glass content and good-quality resin give better strength and impact resistance. Low-grade resin is what causes sheets to turn yellow and brittle.
3. UV protection
Pakistan’s strong sun is the biggest enemy of roofing sheets. Sheets with a UV-protective surface layer or UV-stabilised resin keep their strength and light transmission far longer than unprotected sheets. This one feature often explains much of the price difference between suppliers.
4. Profile and size
Plain flat sheets, standard corrugated profiles and custom profiles matched to a specific metal sheet are priced differently, as are non-standard lengths.
5. Translucent vs opaque, and colour
Clear and translucent sheets for daylighting, and coloured or opaque sheets for full cover, use different resin formulations and pigments.
6. Fire-retardant grades
Fire-retardant resin systems are available for buildings that need them, and cost more than standard grades.
7. Quantity and delivery
Bulk orders for large sheds and factories are usually priced better per square foot. Transport to site is an additional cost for remote locations.
When comparing quotations, always compare thickness, UV protection and profile — not just the rate per square foot.
FRP vs Polycarbonate vs GI Sheets
| FRP sheet | Polycarbonate sheet | GI / metal sheet | |
|---|---|---|---|
| Corrosion | Does not rust | Does not rust | Rusts, especially near coast or chemicals |
| Daylight | Translucent options, diffused light | Very clear | None |
| Chemical resistance | Very good — suits chemical plants and animal sheds | Moderate | Poor |
| Heat in summer | Lower heat than metal | Can trap heat | Very hot |
| Strength / impact | Good, depends on thickness | High impact strength | High |
FRP is especially well suited to chemical plants, fertilizer stores, poultry and dairy farms and coastal buildings, where ammonia, acid fumes or salt air quickly corrode galvanised sheets.
Where FRP Roofing Sheets Are Used
- Factory and warehouse skylights alongside metal roofing
- Chemical, fertilizer and textile plant roofs exposed to corrosive fumes
- Poultry, dairy and livestock sheds
- Car parking shades, canopies and walkways
- Greenhouses and nurseries
- Wall cladding and side-lighting panels
See our architecture & infrastructure solutions, including FRP roofing, cladding and GRP manhole covers.
Installation Tips for a Leak-Free Roof
- Use the correct purlin spacing for the sheet thickness to avoid sagging.
- Pre-drill fixing holes slightly oversize to allow for thermal expansion.
- Fix through the crest of the corrugation, not the valley, using washers with sealing pads.
- Do not over-tighten screws — it cracks the sheet around the fixing.
- Provide adequate side and end laps, with sealant where needed.
- Never walk directly on the sheets; use crawling boards.
Frequently Asked Questions
How long do FRP roofing sheets last?
Good-quality, UV-protected FRP sheets typically last many years in Pakistan’s climate. Cheap sheets without UV protection may yellow and become brittle within a few seasons.
Why do fiber sheets turn yellow?
Mainly because of UV degradation of low-grade or unprotected resin. Choose UV-protected sheets for exposed roofs.
Are FRP sheets better than polycarbonate?
FRP has better chemical resistance and diffuses light more evenly, while polycarbonate is clearer and more impact-resistant. For chemical plants and animal sheds, FRP is usually the better choice.
Can you match the profile of my existing metal roof?
Share your existing sheet profile and dimensions with us, and we will advise on a matching FRP sheet.
Get a Quote from Global Fiberglass
Global Fiberglass Company has been manufacturing FRP/GRP tanks, pipes, chemical plant equipment and infrastructure products in Faisalabad since 1978, with delivery across Pakistan. Share your requirement — the product, size, chemical or application, and site location — and our engineers will recommend the right design.
- Phone / WhatsApp: +92-320-640-7732
- Email: sale@globalfiberglass.pk
- Online: Request a free quote or download our technical datasheets
