Pipe Flashing Systems for Metal Roofs - VSFK-S Fixing Kit V-SEAL fixing kits have been specifically designed to simplify the installation of pipe flashings. The components included in the fixing kits provide the materials required to carry out installation on metal, plastic or fibre cement roofing and cladding materials. Contents Fitting instructions – clearly setting out the steps for installation. Hooked blade trimming knife – designed for safe, easy cutting of sleeve. Silicone sealant – to seal between the roof material and the pipe flashing. HSS drill bit – to drill a pilot hole through the pipe flashing and roof material prior to fixing. Washered fasteners – to firmly fix the pipe flashing to the roof material. Hexagon colour caps – to cover the fastener heads and complete the aesthetic appearance.