Polycarbonate Roofing Sheet Buyer's Guide — Multiwall, Solid & Corrugated
July 2026 · 8 min read · By TRION EXIM LLP Trade Desk
Polycarbonate has become the default material for daylight roofing — skylights, patios, walkways, car parks, greenhouses, and industrial sheds — because it delivers glass-like light at a fraction of the weight and 250 times the impact strength. But "polycarbonate roofing sheet" covers several very different products. This guide explains the types, the right thickness, UV protection, and indicative price per sq ft, so you buy the right sheet the first time.
Quick Answers
Which polycarbonate is best for roofing?
Multiwall for large insulated roofs and skylights; corrugated solid for patios, walkways, and sheds. Both must be UV-protected outdoors.
What thickness for a roof?
6–10mm multiwall for patios/canopies, 16–25mm for large spans; 0.8–2mm for corrugated solid roofing.
Is it UV resistant?
Only if it has a co-extruded UV layer — always confirm UV protection for outdoor use.
Types of Polycarbonate Roofing Sheet
Multiwall Polycarbonate
Hollow twin-wall to 5-wall structure with internal ribs. Lightweight, strong, and thermally insulating — the standard for skylights, greenhouses, pergolas, and large roof spans. Diffuses light and reduces heat gain. Thicknesses 4mm–25mm.
Corrugated (Profiled) Polycarbonate
Solid sheet rolled into corrugated/profiled shapes that match metal roofing profiles. Ideal for patios, car parks, industrial sheds, and walkways where you need a strong, water-shedding single-skin roof. Thicknesses 0.8mm–2mm.
Solid Flat Polycarbonate
Monolithic glass-clear sheet for canopies, curved (cold-bent) roofs, and security glazing where maximum clarity and impact strength matter. Thicknesses 2mm–12mm.
Choosing Thickness & Tint
| Application | Type & Thickness | Tint |
|---|---|---|
| Patio / canopy | 6–8mm multiwall | Opal / bronze (heat cut) |
| Greenhouse / skylight | 10–16mm multiwall | Clear / opal (diffused) |
| Car park / walkway | 1.2–2mm corrugated | Bronze / opal |
| Large industrial span | 16–25mm multiwall | Opal |
| Curved canopy / glazing | 3–6mm solid | Clear |
Polycarbonate Roofing Price (Indicative)
| Type | Thickness | Price (USD / sq ft) |
|---|---|---|
| Multiwall (twin-wall) | 6 mm | $0.45 – $0.70 |
| Multiwall | 10 mm | $0.70 – $1.05 |
| Corrugated (solid) | 1.2 mm | $0.60 – $0.95 |
| Solid flat UV | 3 mm | $0.90 – $1.30 |
Indicative per sq ft, ex-works India, 2026, before ocean freight. Varies by thickness, tint, UV grade, and order volume.
Buying Tips for Importers
- Insist on UV protection — cheap non-UV sheet yellows and cracks within 1–2 years outdoors.
- Match profile to your framing — corrugated profiles must fit your purlin/rafter spacing.
- Confirm warranty & light transmission — reputable sheet carries a 10-year UV warranty and stated % light transmission.
- Order accessories together — U-profiles, H-connectors, and end tapes for multiwall installs.
- Ship efficiently — sheets are light but bulky; plan container loading to control freight cost.
For full specifications, grades, and our export range, see the polycarbonate sheet supplier page. For shipping terms, see Incoterms explained.
Need Polycarbonate Roofing from India?
Send us your type, thickness, tint, and quantity — we'll send FOB/CIF pricing within 24 hours.
Request a Quote Polycarbonate Details