H&B Liquid-Flash Liquid Detailing Membrane

H&B Liquid-Flash Liquid Detailing Membrane

H&B Liquid-Flash is a high-performance, single-component liquid-applied membrane used for detailing and flashing applications in air and moisture barrier systems. Made from advanced silyl-terminated polyether (STPE) technology, it forms a durable, flexible, and water-resistant seal that adheres well to a wide range of construction surfaces including concrete, plywood, masonry, and gypsum sheathing.

This product is ideal for sealing rough openings, sheathing joints, and other transition areas where a continuous air and water barrier is required. It can be applied to damp or wet substrates without risk of wash-off, outgassing, or bubbling, making it a reliable choice for challenging jobsite conditions. Contractors appreciate its ability to be applied in wet weather, its long-term flexibility, and its compatibility with multiple building materials without the need for a primer.

Designed for ease of use on both vertical and horizontal surfaces, Liquid-Flash simplifies the detailing process by combining the performance of traditional flashing tapes and sealants into one toolable liquid membrane. It meets stringent environmental standards, including VOC compliance and Proposition 65, making it a contractor-friendly and eco-conscious choice for modern building envelopes.

Features

• Adheres to wet and damp surfaces without bubbling.
• Can be applied in wet weather conditions.
• Forms a flexible, elastomeric seal that won’t shrink or crack.
• Compatible with concrete, plywood, masonry, and gypsum sheathing.
• Eliminates need for primer on most surfaces.
• 100% solids formula for consistent thickness and durability.
• UV and weather resistant for long-term performance.
• Meets VOC regulations with low odor and no solvents.
• Toolable for smooth, even coverage on jobsite applications.
• Ideal for windows, doors, sheathing joints, and transition areas.
• Helps maintain continuity of air and moisture barrier systems.
• Breathable membrane allows moisture to escape from damp surfaces.
• Backed by compliance with CARB, SCAQMD, and USDA standards.
• Suitable for use in both residential and commercial construction.