We stock Polycarbonate in 4mm, 10mm, 16mm and 25mm. Also available in 32mm and 35mm. We find that 4mm Polycarbonate is ideal for greenhouses and cloches, and is only available in clear. The 10mm and 16mm thicknesses are also available in clear, opal and bronze. The 25mm is available in the same colours and also in Heatgard.
The Thicker the polycarbonate, the more insulation you get for keeping the warmth in. Polycarbonate is class 1 fire rated which is self extinguishing in case of fire. All our Polycarbonate carries a 10 year UV Guarantee against discolouration.