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Availability: In stock

Regular Price: $69.00

Special Price $42.26

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Regular Price: $69.00

Special Price $42.26



GCP Applied Technologies (Formerly Grace) Vycor V40 is a 40 mil thick version of Vycor Flashing. Available up to 36 inch widths.


Water from both exterior and interior sources is among the worst enemies of building structures. When water enters the wall system and remains there for a long time, it creates an environment favorable for the development of rot, mold and mildew. Proper waterproofing and flashing practices are needed to ensure high quality, long-lasting construction.

Repairs resulting from water and moisture infiltration are major concerns for homebuilders, contractors, architects and homeowners as they are difficult repairs and extremely costly. Window and door openings, deck-to-wall intersections, foundation sill plates, corners and other penetration areas are the most common water entry points. The solution—a self-adhered flashing membrane properly integrated with the other elements of the building structure. This will create a barrier to water entry as well as a drainage plane for water to drain out of the wall.

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.

Product Advantages

  • Premium protection against air, water and moisture infiltration
  • Highly conformable
  • Protects critical non-roof detail areas including masonry walls and stucco
  • 40 mil thick

Additional Documents

Grace Vycor V40

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