Opal effect Polycarbonate Multiwall Roofing Sheet 4m x 1000mm. Axiome light-weight glazing sheets are manufactured from polycarbonate & have a protective UV layer on the outer side. The opal (white tint) colour provides extra privacy compared to clear sheets whilst reducing heat transmission with its higher reflective properties. These sheets offer superior light transmission rigidity & thermal insulation properties & are a light weight solution. Axiome multiwall polycarbonate won’t shatter like glass & the sheets can be easily cut to shape or size with a fine-tooth jigsaw or similar.