Private House Extension, Cornwall, United Kingdom

KÖSTER TPO was proposed as the waterproofing of choice for this residential extension following a C.P.D. presented to the project architect. The extension was built tightly against the neighbouring house meaning a box gutter had to be created from KÖSTER TPO Metal Composite sheets and plywood. The main warm roof build-up incorporated Koster Vapour Barrier FR, PUR rigid insulation followed by mechanically fastened KÖSTER TPO in Slate Grey.