APV Engineered Coatings introduces BlockSeal™, a water-based, waterproof liquid flashing that seals window and door substrates in new and existing residential, commercial and industrial applications. It is one of the few liquid flashing products to meet and exceed AAMA 714-19, Voluntary Specification for Liquid Applied Flashing Used to Create a Water-Resistive Seal around Exterior Wall Openings in Buildings.
BlockSeal™ Liquid Flashing is a low-VOC, fast-drying acrylic adhesive that keeps moisture from penetrating door and window openings beneath a structure’s exterior façade. Its high resin content provides excellent adhesion to the substrate, eliminating any possibility of moisture penetration.
BlockSeal™ can be applied to a variety of surfaces, including weathered wood, plywood, clapboard, primed metal, galvanized metal, urethane, polyester, adobe, brick, stucco, masonry, slate and slab.
Contractors can apply single-component BlockSeal™ using a brush or roller. A wet film thickness coat between 10-16 mil is recommended, and a minimum of 4 hours of dry time is required before applying a compatible paint or other finish coating. Because BlockSeal™ contains grit, contractors do not need to cast sand on the surface after application. Spills and tools can be easily cleaned with warm, soapy water.
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