Axiome Opal effect Polycarbonate Multiwall Roofing sheet (L)4m (W)690mm (T)25mm.Axiome® glazing sheets provide a lightweight and robust solution that can be used in many roofing and glazing applications. Axiome® sheets are easy to cut to size using a fine tooth blade. Opal tint sheets offer heat reduction properties and a privacy effect. Manufactured as a bright white tint the Opal Axiome® option will reflect heat from the sun’s rays reducing heat build-up by around 35% of the solar energy.