Polycarbonate Roofing Malaysia: Complete Guide

Polycarbonate is one of the most widely specified translucent roofing materials in Malaysia — used across industrial skylights, factory walkways, residential car porches, pergolas, swimming pool covers, bus stops, covered walkways and sports facilities. Polycarbonate roofing sheets are extruded from thermoplastic polymer resin, giving them exceptionally high impact resistance (around 250 times stronger than glass of the same thickness), high natural light transmission (up to 90%), and light weight (typically 1.0–1.5 kg/m² for corrugated, 1.2–3.5 kg/m² for multiwall).

This guide explains the types of polycarbonate sheets available in Malaysia (solid, corrugated, twin-wall, multiwall), the typical price ranges, lifespan in Malaysian tropical conditions, how polycarbonate compares to FRP (fibreglass), metal, acrylic and UPVC roofing, fire-rating considerations, installation requirements, and how to choose a reliable polycarbonate supplier. Whether you are an architect specifying a factory skylight, a contractor comparing materials, or a homeowner planning a car porch, the sections below will help you make an informed decision.

Polycarbonate roofing is supplied in three main forms. Each is engineered for a different set of applications — selecting the right type is the single biggest factor in achieving a satisfactory result.

Solid Polycarbonate Sheet

Flat, single-layer polycarbonate sheets from 1 mm to 12 mm thick. Solid polycarbonate gives the clearest, glass-like finish of any polycarbonate product, with light transmission up to 90%. Available in clear, opal/white, bronze, grey and solar-control tints. Best for security glazing, bus-stop roofs, impact-resistant skylights, machine guards and any application where maximum clarity and impact resistance are required. More expensive than corrugated or multiwall. Typical Malaysian price: RM 80–RM 200 per m² depending on thickness.

Corrugated Polycarbonate Sheet

Profiled sheets that match common metal and FRP roof profiles — 76 mm corrugated (the standard Malaysian industrial profile), 5-rib industrial, tile-profile and Greca. Used as a direct translucent replacement or companion sheet alongside metal or FRP roofing on the same roof (typically 10–20% of the roof area as skylight strips). Light weight, low cost, fast installation. Typical Malaysian price: RM 35–RM 80 per m² depending on thickness and profile. Best for industrial factory skylights, warehouse roof strips, agricultural barns.

Multiwall (Twin-Wall, Triple-Wall) Polycarbonate Sheet

Hollow fluted sheets — twin-wall (most common), triple-wall and five-wall — typically 4 mm to 25 mm thick. The internal flutes trap air, giving excellent thermal insulation (lower U-value than solid or corrugated). Lighter than solid polycarbonate of equivalent rigidity. Available in clear, opal, bronze, blue, green and solar-control tints. Typical Malaysian price: RM 45–RM 150 per m² depending on thickness and wall structure. Best for residential car porches, pergolas, walkways, swimming pool covers, conservatory-style roofing and any application where diffused daylight and thermal insulation are wanted.

A side-by-side comparison of solid vs corrugated vs multiwall polycarbonate — including thickness, light transmission, thermal insulation, cost, and recommended applications — is on our FRP vs Polycarbonate guide (which also covers the FRP comparison).

Polycarbonate is one of several roofing options available in Malaysia. The right choice depends on application, environment, fire safety requirements, and budget. The table below summarises the key differences.

For a deeper dive — including cost per m², impact resistance, UV performance, chemical resistance, and recommended Malaysian applications — see our full FRP vs Polycarbonate vs UPVC vs Acrylic comparison guide.

Polycarbonate sheet pricing depends on type, thickness, profile, colour/tint, brand and order quantity. The ranges below are typical 2026 Malaysian market rates for material only, excluding installation and accessories.

Full installed cost (sheet + aluminium or steel framing + fasteners + flashing + labour) typically runs RM 80–RM 250 per m² depending on complexity. For a project-specific quotation including the right type and thickness for your application, request a quote with your project area and intended use.

Yes — polycarbonate is widely used in Malaysia and well-suited to local conditions, but a few climate-specific points are worth understanding before you specify.

UV Protection

Malaysian UV intensity is among the highest in the world (UV index routinely 11–13). Always specify polycarbonate with a co-extruded UV-protective layer on the outer face — unprotected economy-grade sheets will yellow, craze and lose impact strength within 5–7 years. Quality sheets carry a written UV warranty (typically 10 years) against excessive yellowing and loss of light transmission.

Heat and Thermal Expansion

Polycarbonate expands approximately 0.065 mm per metre per °C — about 7× more than glass. A 3-metre sheet experiences roughly 6 mm of expansion across a typical Malaysian 30°C daytime temperature swing. Installation must allow for this: pre-drill oversized fixing holes (typically 10 mm diameter for a 6 mm fastener), seat fasteners centrally without over-tightening, and use breathable EPDM gaskets. Failure to allow for thermal movement is the single most common cause of cracked or buckled polycarbonate roofs in Malaysia.

Heavy Rain and Wind

Polycarbonate tolerates the heavy monsoon rain typical of the Malaysian east coast (Kelantan, Terengganu, Pahang — up to 250 mm/month in Nov–Jan) when correctly installed with adequate slope (minimum 5°, 10° preferred), properly sealed end laps (butyl tape + turn-ups), and securely fastened side laps. Solid and corrugated polycarbonate have excellent impact resistance — surviving hailstones, fallen branches and wind-borne debris that would shatter glass. Multiwall sheets need end-cap sealing tape (breathable) to prevent dust, insects and moisture entering the hollow flutes.

Fire Performance

Standard polycarbonate is combustible. For fire-rated buildings — public-assembly, petrochemical, power generation, schools, hospitals — specify fire-retardant grade polycarbonate (e.g. UL 94 V-0 rated) or consider alternative materials such as Space Asia's Star-Lite FRP (BS 476 Part 7 Class 2 — the highest fire-retardance rating available for fibreglass roofing in Malaysia). Always confirm local building code requirements with your architect or the local authority (DBKL, MBPJ, MB Penang, etc.) before specifying polycarbonate on a fire-rated project.

Correct installation is the single biggest factor in polycarbonate lifespan. The most common premature-failure modes (yellowing, cracking, buckling, leaking) are almost always installation errors, not material defects. The key principles are:

1. Allow for thermal expansion. Pre-drill oversized fixing holes (typically 10 mm for a 6 mm fastener). Do not over-tighten — leave the sheet free to move under the EPDM washer.
2. Observe correct slope. Minimum 5° (1:12) for general use; 10° (1:6) or steeper for low-profile sheets, high-rainfall regions, and large roof areas.
3. Seal end laps with butyl tape and add turn-ups at the upper end of the sheet at ridge lines to prevent wind-driven rain ingress.
4. Seal side laps with a sealing strip and fix through both sheets at the side-lap corrugation.
5. Install with the UV-protected face up. Most polycarbonate sheets have a printed protective film marking the UV side — remove the film only after installation.
6. Seal multiwall ends. Apply breathable anti-dust tape at the lower end and solid aluminium tape at the upper end of multiwall sheets to keep flutes clean and dry.
7. Use compatible fixings. Weather-resistant fasteners (typically hot-dip galvanised or stainless steel) with EPDM gaskets. Do not use PVC or incompatible washers that will degrade under Malaysian UV.
8. Walk on planks, not sheets. Polycarbonate will support foot traffic if correctly fixed to adequate purlins, but stepping directly on the sheet can cause cracking — use roof ladders or temporary planks.

A printable installation guide covering all eight steps with diagrams is included in every Space Asia polycarbonate delivery. For the FRP installation procedure see the FRP roofing installation guide (HowTo schema on page).

How much does polycarbonate roofing cost in Malaysia?

Polycarbonate roofing in Malaysia typically ranges from RM 35 to RM 120 per square metre for the sheet material alone, depending on type, thickness and order quantity. Full installed cost (materials + framing + labour) generally runs RM 80–RM 250 per square metre. Project-specific quotations are provided on request.

How long does polycarbonate roofing last in Malaysia?

Quality polycarbonate roofing with co-extruded UV protection typically lasts 10 to 15 years in Malaysian tropical conditions. Unprotected economy sheets may yellow and fail within 5–7 years. Space Asia warrants its polycarbonate sheets up to 10 years against UV degradation, subject to grade.

Is polycarbonate roofing suitable for Malaysian weather?

Yes. Polycarbonate handles Malaysian heat, UV and rain well when correctly installed (oversized fixing holes for thermal expansion, minimum 5° slope, EPDM gaskets). Limitations: standard polycarbonate is combustible — specify fire-retardant grade for fire-rated buildings, or consider FRP alternatives (Star-Lite, BS 476 Part 7 Class 2).

What is the difference between solid, corrugated and multiwall polycarbonate?

Solid polycarbonate is a flat single-layer sheet (1–12 mm) — clearest and strongest, glass-like. Corrugated polycarbonate matches common metal/FRP roof profiles — used for skylight strips on industrial roofs. Multiwall (twin-wall, triple-wall) is a hollow fluted sheet (4–25 mm) — lighter, better thermal insulation, used for car porches, pergolas, walkways. All three are available in clear, opal, bronze and solar-control tints.

Polycarbonate vs FRP — which is better for a Malaysian factory roof?

Polycarbonate has higher light transmission (up to 90%) and impact resistance. FRP lasts longer in hot climates (15–25 years), has better fire-rating options (BS 476 Class 2), better chemical resistance, and lower cost. For chemical plants, coastal buildings, livestock barns and fire-rated public-assembly buildings, FRP is usually the better choice. For car porches, pergolas, walkway covers and impact-prone residential skylights, polycarbonate is usually preferred. The full comparison is on our FRP vs Polycarbonate guide.

Can polycarbonate roofing be used for a car porch or pergola in Malaysia?

Yes — polycarbonate is the most popular roofing choice for Malaysian residential car porches, pergolas, walkways, gazebos and patio covers. Typical uses: solid (3–6 mm) for a clear glass-like finish; tinted or opal multiwall (10–16 mm) for shade and rain protection with diffused daylight. Always pre-drill oversized holes for thermal expansion, use EPDM washers, slope minimum 5° (10° preferred), and seal multiwall ends with anti-dust tape.

• FRP Roofing Malaysia Guide
• FRP vs Polycarbonate comparison
• Roofing buying guide
• Sun-Lite Series (FRP)
• Moon-Lite Series (FRP chemical resistant)
• Star-Lite Series (FRP fire retardant)
• FRP installation guide
• Residential roofing applications
• Standards & certifications
• Daylighting & ventilation solutions
• Full FAQ
• Request a quote