EDL step flashing provides a weathertight seal for roof windows
installed on roofs with thin roofing materials such as asphalt or fiberglass shingles, slate, cedar shingles and shakes.
Each piece of step flashing is interwoven with a layer of
roofing material for proper water drainage. No caulk or sealants are
needed. Type EDL for roof windows is designed for
roof pitches required by GPU, GXU, GDL, and GGU units.