Description
. FastFlash is a waterproofing, adhesive and detailing compound that combines the best characteristics of silicone and polyurethane. This single-component, silyl-terminated polymer (STP) is easy to gun, spread, and tool to produce a highly durable, seamless, elastomeric flashing membrane. Use FastFlash as a liquid flashing membrane in rough openings, to fill joints and seams, to counterflash waterproofing and air barrier components in new or existing wall assemblies, and to seal around penetrations or protect countersunk fasteners.
Jurgis99f644
FastFlash is an incredible product—super easy to apply since it guns and spreads smoothly, yet forms a tough, flexible seal. Perfect for sealing joints, penetrations, or rough openings, it lasts like polyurethane but applies like silicone. I love that it’s both waterproof and airtight, making it a must-have for any serious waterproofing job. Works great on new and existing walls, no hassle!