PVC Corrugated Roofing Sheets
Polycarbonate Corrugated Roofing Sheets
Our greenhouse polycarbonate sheets offer a strong, lightweight, and long-lasting alternative to traditional greenhouse glass. Available in both twinwall and solid polycarbonate options, these sheets provide excellent light transmission, UV protection, and outstanding impact resistance, making them ideal for greenhouse glazing, cold frames, grow houses, and garden structures.
Whether you need replacement greenhouse panels or bespoke cut-to-size sheets, our range includes standard greenhouse sizes and custom-made options to suit virtually any project. Designed to withstand the UK’s changing weather conditions, polycarbonate greenhouse sheets are virtually unbreakable, easy to install, and built to last.
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Thicker sheets keep more heat in and let slightly less light through. 4mm twinwall is the usual choice: it drops into standard frames and balances light and warmth. 6mm twinwall holds heat a little better for a greenhouse you heat over winter, at a small cost in light. Solid 2 to 6mm sheets give the most light but little insulation.
4mm twinwall loses about a third less heat than single glass and lets in about a tenth less light. The air trapped between the two skins slows heat passing out. So the greenhouse stays a little warmer overnight and costs less to heat. It only counts if the panes fit snugly, so close gaps and use enough clips.
Yes, provided the UV-protected side faces the sun. Modern sheets have a co-extruded UV layer built into the surface, and accelerated testing equal to about twenty years of sun shows only minor light loss. The sheets carry a ten-year warranty. The layer is on one side only, so fit each pane with the printed film side outward or it will fail early.
Twinwall is the usual choice: two thin skins joined by ribs with air trapped between for insulation. We stock 4mm twinwall in standard greenhouse panes of 610x610, 610x457, 610x1220 and 730x1422mm, and 4mm or 6mm cut to size. Solid clear sheet from 2 to 6mm gives a glass-like look and more light but less insulation. Both drop into aluminium or timber frames.
Yes. We cut 4mm and 6mm twinwall and 2 to 6mm solid clear sheet to your sizes, and both drop into aluminium or timber frames. Measure every opening, allow for our plus or minus 5mm cutting tolerance, and remember cut-to-size sheets are non-returnable. Glazing clips (packs of 25) hold panes in aluminium frames: at least four per 610x610 pane, six on exposed sites.
