Velux EDN CK04 2500 Recessed Flashing for Slate

EDN flashing set comes with underfelt collar (BFX) for a watertight seal between the roof window and the roof and insulation collar (BDX) for reduction of heat loss and eliminating cold bridges. It is designed to work with slate up to 9mm thick. Also works with roof pitches from 20 degrees to 90 degrees. Recessed flashings provide a sleek and streamlined finish as the roof window is installed 40 mm deeper into the roof structure, meaning that less of the roof window protrudes above the roofline