ScrewDown Rafter Gasket with Aluminium Cap Part of the high quality maintenancefree Sunwood Timber Glazing System. Attractive and strong aluminium extrusion with tough powdercoated finish and longlasting EPDM rubber gaskets . Retrofitted to 2 rafters on existing 540 pitched timber roofs the 50mm Rafter Main Bar and other Sunwood components can encase and seal problem leak areas while also breathing a new lease of life into the roof. Sunwood is equally effective on new instalations too offering an attractive lowmaintenance longlife capping solution. This ScrewDown rafter bar includes powdercoated aluminium 50mm Rafter Main Bar Top Cap with detachable Cover Cap to conseal and protect fixings. Rafter Main Bar incorporates integrated High Side EPDM Rubber Gasket for watertight seal against top side of glazing and a separate EPDM Base Gasket with removable central pip that is fixed to timber rafter to act as a seat and seal on underside of glazing. Features ...