Thermwell T92H Transparent Weatherproofing Tape 1in X 45ft

Product Description

The THERMWELL T92H is a transparent, adhesive weatherproofing tape designed to seal air and moisture leaks around windows and similar building envelope penetrations. Measuring 1 inch wide by 45 feet in length, it provides a clear, low-visibility seal that does not obscure window frames or surrounding trim. The pressure-sensitive adhesive bonds to common framing and casing surfaces, making it a practical field solution for weatherization work. HVAC technicians, insulation contractors, and general building trades installers use this tape to close gaps that drive infiltration losses and degrade envelope performance.

This tape is suited for residential and light commercial window installations where a clean, nearly invisible seal is required. Typical applications include sealing the perimeter of window frames to adjacent wall surfaces, closing gaps at sill plates, and addressing air bypass paths identified during blower door testing or visual inspection. The 45-foot roll length covers multiple windows per roll, reducing job interruptions on larger weatherization projects.

Key Features

• Transparent film construction keeps the seal visually unobtrusive on window frames and trim
• Pressure-sensitive adhesive bonds to window casing, framing, and smooth masonry surfaces
• 1-inch width suits tight perimeter sealing without overlap bulk
• 45-foot roll length provides sufficient coverage for multiple windows per roll
• Addresses both air infiltration and moisture intrusion at window perimeters

Compatibility

Designed as an OEM-style weatherproofing solution for sealing air and moisture leaks around residential and light commercial window installations.

Installation Notes

Surface preparation is critical before application — clean and dry the substrate thoroughly to ensure full adhesive contact. No special tools are required beyond a utility knife or scissors and a roller or credit card to press the tape firmly against the bonding surface. This product is typically installed by insulation contractors, weatherization crews, or general trades workers performing building envelope improvements. Follow applicable local building codes and manufacturer surface temperature guidelines when applying adhesive tape products outdoors.