Step flashing pieces interweave with roofing material for proper water drainage. Additional step pieces (ZZZ 200) are required for shakes and other thick roofing materials.

The primary function of the EDL flashing kit is to provide an engineered flashing kit for VELUX (A21 type) skylights. The EDL flashing kit consists of four components: saddle flashing, sill flashing, step flashings, and skylight adhesive underlayment. Step flashings should be woven together with roofing material.