Roofline and rainwater products from CWL including high quality guttering, cladding, facias and soffits for all requirements.
Each rainwater system is co-extruded with a white interior and a range of exterior colours.
Widely published test results show that while a white surface exposed to sunshine can absorb heat and attain a surface temperature 10oC or more over the air temperature, dark surfaces can rise a further 30-40oC and exceed the softening point of the PVC. On large capacity gutters with a large surface area facing the sun, this can be a particular problem.
All gutter systems provided by CWL are co-extruded with coloured exteriors and white interiors. While the interior will be exposed to sunlight as normal, its absorption of heat from the sun and subsequent expansion along its width and length will be significantly reduced, thus dramatically decreasing the probability of any associated problems.