VYCOR® V40, a high performance, self-adhered flashing membrane provides premium protection against water infiltration in all critical non-roof detail areas, which traditional building papers, felts and housewraps cannot match. When properly installed, VYCOR® V40 flashing can reduce the risk of water infiltration, often associated with costly call-backs. VYCOR® V40 flashing fully adheres to the substrate, seals around fasteners and prevents water from passing through and into the structure. It is highly conformable, easy to detail and provides premium protection against leaks. Best of all, VYCOR® V40 employs the same proven technology as our famous Grace Ice & Water Shield® —the market leader for over thirty years.

VYCOR® V40 self-adhered flashing is composed of two waterproofing materials—rubberized asphalt and cross-laminated polyethylene. The product is designed to meet the requirements for weather-resistive barriers as defined by Federal Specification UU-B-790a, Grade A.