The Art of Fiberglass & Polyethylene, Engineered with Innovation and Precision for Lasting Performance.
Fiberglass Roofing Sheet
Publish Date: 20 October 2026
UniLite FRP roofing sheets are lightweight, translucent fibreglass sheets that bring natural daylight into houses, car porches, factories, warehouses, farms and walkways in Malaysia.
Each sheet is made from glass fibre reinforced isophthalic polyester resin and finished with a UV protective heat-seal film, to help the surface hold up under strong tropical sun.
A UniLite sample sheet let through 62.6% of visible light and kept its surface intact, with no exposed fibre, after 1,000 hours of accelerated UV exposure in SIRIM QAS International testing.
UniLite sheets are manufactured by Y.T. Fibreglass Industries Sdn Bhd in Port Klang, Selangor, in many corrugated and trapezoidal profiles, so they can be laid in line with common metal roofing sheets as skylight panels.
UniLite FRP Roofing Sheets in Malaysia
FRP (fibreglass reinforced plastic) roofing, also called fiberglass roofing sheet, translucent roofing sheet or bumbung gentian kaca, is a composite sheet made by soaking glass fibre mat in resin and forming it into a roofing profile. The glass fibre gives the sheet its strength and the resin binds it and lets light through.
FRP roofing is light, does not rust and needs little maintenance. That makes it a common choice for skylight strips in metal roofs, where it lets daylight into a building without the weight of glass.
Why FRP Skylight Sheets Suit the Malaysian Climate
Malaysia has strong sun all year. MetMalaysia regularly reports UV index readings in the very high (8 to 10) and extreme (11 and above) bands, and much of Peninsular Malaysia receives around 2,500 mm of rain a year. A skylight sheet here has to cope with intense UV, heavy rain and high humidity at the same time.
- UV protection: the UV protective heat-seal film protects the sheet surface from direct sunlight. In SIRIM UV testing to ASTM G154 the sample kept 73% of its flexural strength and 87% of its flexural modulus after 1,000 hours, with no exposed fibre on the surface.
- No rust: FRP does not corrode in rain, humidity or coastal air.
- Low movement: FRP expands far less with heat than polycarbonate or PVC sheet (see the comparison below), which helps fixings and laps stay tight through hot days and cool nights.
- Daylight: a translucent sheet spreads daylight into the space below, so factories, stores and car porches stay bright during the day.
Lightweight Roofing
FRP has a density of about 1,600 kg/m³, about one fifth of steel (7,850 kg/m³). A 1.5 mm UniLite sheet weighs 2,400 g/m² and the heavier 2.3 mm sheet weighs 3,660 g/m². Light sheets are easier to carry onto the roof, handle and fix, and add little load to the roof structure.
UniLite Technical Performance (SIRIM Tested)
Mean values from SIRIM QAS International tests on a UniLite 2,400 g/m² (1.5 mm) Icy Blue sample sheet, Test Report 2025CE1779, dated 28 May 2025. Results apply to the sample tested.
| Property | Result | Test Method |
|---|---|---|
| Tensile strength at break | 126 MPa | ASTM D638 |
| Flexural strength | 124 MPa | ASTM D790 |
| Flexural modulus | 5.5 GPa | ASTM D790 |
| Impact resistance, unnotched cantilever beam | 120 J/m | ASTM D4812 |
| Light transmittance (Icy Blue) | 62.6% | ASTM D1003 |
UV Durability
SIRIM Test Report 2025CE2753, dated 30 July 2025: ASTM G154 cycle 3 (UVB-313 lamp), 1,000 hours of alternating UV at 70°C and condensation at 50°C.
| Property | Before UV | After 1,000 h UV | Retained |
|---|---|---|---|
| Flexural strength (ASTM D790) | 210 MPa | 154 MPa | 73% |
| Flexural modulus (ASTM D790) | 7.8 GPa | 6.8 GPa | 87% |
| Colour change, grey scale (ASTM D2616) | – | 2.5 | – |
| Surface appearance | – | No exposed fibre | – |
Full test reports are available on request.
FRP Compared With Polycarbonate, PVC, Steel and Aluminium
| Property | FRP | Polycarbonate | PVC | Steel | Aluminium |
|---|---|---|---|---|---|
| Expansion of a 12 m sheet, 0 to 40°C (mm) | 9.1 | 32.4 | 30.2 | 5.8 | 11.5 |
| Thermal expansion coefficient (×10-5/°C) | 1.9 | 6.75 | 6.3 | 1.2 | 2.4 |
| Density (kg/m³) | 1,600 | 1,200 | 1,380 | 7,850 | 2,700 |
Typical values for comparison only. The FRP expansion coefficient is manufacturer data.
Profiles and Thicknesses
UniLite is made in a wide range of profiles to match common metal roofing and cladding sheets. Tell us your existing roof sheet profile so the skylight sheet laps correctly.
| Profile | Type |
|---|---|
| 700, 700SP, 430 | Corrugated and trapezoidal roofing profiles |
| 750U, 750MR, 740 Windeck | Trapezoidal roofing profiles |
| 760, 760A | Trapezoidal roofing profiles |
| 1067 (Big 6) | Big corrugated profile |
| 1015 | Common cooling tower cladding profile |
1015 Profile Dimensions
| Thickness | Sheet Weight | Cover Width | Overall Width | Rib Height | Rib Pitch |
|---|---|---|---|---|---|
| 2.3 mm | 3,660 g/m² | 1,015 mm | 1,080 mm | 29 mm | 203 mm |
Choosing a Thickness
| Thickness | Typical Use |
|---|---|
| 0.8 mm | Light use: agriculture, plant nurseries and livestock sheds |
| 1.0, 1.2, 1.5 and 1.8 mm | Rainwater roofing, fence rails, panels, architectural panels, garden sheds, roof tiles and cladding |
| 2.0 mm and above | Better strength and performance for roofing |
FRP Roofing Sheet Applications
Factory and Warehouse Skylights
Skylight strips laid in line with metal roof sheets let daylight into production floors, stores and warehouses.
Houses, Car Porches and Awnings
Translucent sheets over car porches, patios, awnings, pergolas and gazebos keep out rain while keeping the space bright.
Commercial Canopies and Covered Walkways
Canopies and walkways at shops, schools and offices.
Farms, Nurseries and Greenhouses
Light-diffusing sheets for plant nurseries, greenhouses, barns and livestock sheds, where FRP also stands up to humidity and farm chemicals.
Cooling Tower Cladding
The 1015 profile is a common cladding profile for cooling towers.
Chemical Resistance
UniLite uses isophthalic polyester resin. The resin supplier's chart (ETERSET 2660-M) lists resistance to many dilute acids, alkalis, salts and organics, for example 10% hydrochloric acid up to 71°C and 50% sulphuric acid up to 60°C. These are resin data, not tests on the finished sheet, so please confirm suitability for your actual service conditions.
Roofing Accessories
Matching FRP roofing accessories are available, including eave and valley gutters, ridge caps, hip and barge capping, and drip, corner and door head flashings. See our fiberglass roofing accessories.
How to Specify FRP Roofing Sheet for Your Project
- Roof sheet profile to match (send a photo or the profile name of your metal sheet)
- Thickness and colour
- Sheet length and quantity
- Application: skylight, full roof, wall cladding or canopy
- Any chemical exposure, for factories and farms
Frequently Asked Questions About FRP Roofing Sheets
What is FRP roofing sheet?
FRP roofing sheet is a translucent fibreglass reinforced plastic sheet made from glass fibre and resin. It is used as a skylight panel or full roof covering to let daylight into buildings.
Is FRP roofing sheet the same as fiberglass roofing sheet?
Yes. FRP stands for fibreglass reinforced plastic, so FRP roofing sheet, fiberglass roofing sheet and translucent fibreglass sheet all describe the same kind of product.
Is FRP roofing sheet good for skylights in Malaysia?
Yes. It is light, does not rust and lets daylight through. UniLite sheets have a UV protective heat-seal film for strong Malaysian sun, and a SIRIM tested sample kept its surface intact after 1,000 hours of accelerated UV exposure.
How much light does UniLite let through?
A UniLite 1.5 mm Icy Blue sample sheet transmitted 62.6% of visible light when tested by SIRIM QAS International to ASTM D1003.
How heavy is an FRP roofing sheet?
A 1.5 mm UniLite sheet weighs 2,400 g/m2 and a 2.3 mm sheet weighs 3,660 g/m2. FRP has a density of about 1,600 kg/m3, about one fifth of steel.
What is the UV protective heat-seal film for?
It protects the sheet surface from direct sunlight, helping the sheet keep its surface and strength under strong UV.
Who makes UniLite FRP roofing sheets?
UniLite translucent fibreglass roofing sheets are manufactured by Y.T. Fibreglass Industries Sdn Bhd in Port Klang, Selangor, and supplied by Mui Fatt Marketing Sdn Bhd.
Is FRP better than polycarbonate roofing?
FRP expands much less with heat. A 12 m sheet heated from 0 to 40 degrees C expands about 9.1 mm in FRP compared with about 32.4 mm in polycarbonate, which helps fixings and laps stay tight. The right choice depends on the project.
Can UniLite match my existing metal roof sheet?
UniLite is made in many profiles, including 700, 700SP, 430, 750U, 750MR, 740 Windeck, 760, 760A, 1067 (Big 6) and 1015. Send us your roof sheet profile so we can match it.
Which thickness should I choose?
0.8 mm suits light agricultural use. 1.0 to 1.8 mm suits rainwater roofing, panels, sheds and cladding. 2.0 mm and above gives better strength for roofing.
Is UniLite SIRIM tested?
Yes. UniLite samples were tested by SIRIM QAS International for tensile, flexural, impact and light transmittance properties (Report 2025CE1779) and for UV exposure (Report 2025CE2753). Full reports are available on request.
Is FRP roofing sheet chemical resistant?
The isophthalic polyester resin used has good resistance to many dilute acids, alkalis and salts according to the resin supplier's data. Confirm suitability for your actual chemicals and temperature.
Do you supply FRP roofing accessories?
Yes. Gutters, ridge caps, capping and flashings in fibreglass are available to complete the roof.
Technical Expertise and Attribution
Technical specifications and product information on this page are attributed to Danny Ng Shin Lai, Director & Lead Composite Technical Specialist, and the Mui Fatt Technical Engineering Support Team.
Danny Ng studied Materials Science and Engineering at UC Berkeley and oversees technical design, composite fabrication standards, engineering design and technical compliance for FRP/GRP products.
For FRP roofing sheet selection, the technical team considers the roof profile, sheet thickness, span between purlins, exposure to sun and chemicals, and the amount of daylight needed.
Profile Matching
The skylight sheet must match the profile of the surrounding metal sheets so it laps and seals correctly. Send the profile name or a photo and measurements of the existing sheet.
Thickness and Weight
Thicker sheets are stronger and stiffer. Light agricultural roofs can use thinner sheets, while factory roofs and cladding normally use 1.5 mm and above.
Tested Performance
Figures on this page come from SIRIM QAS International test reports on UniLite sample sheets. Results apply to the samples tested, and full reports are available on request.
Request a Quote
Looking for FRP roofing or skylight sheets for your project? Contact Mui Fatt with your roof profile, thickness, sheet length and quantity.
Mui Fatt supplies UniLite translucent FRP roofing sheets in many profiles, together with matching fibreglass gutters, capping and flashings.
Working hours: Monday to Friday, 8:30am to 5:30pm
Looking For Reliable Fibreglass
Or Polyethylene Products?
Talk to our team today. We’ll help you find the right solution for your business needs.
Get a Quote
