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The MORTEX PRODUCTS B2WT is a pre-formed weatherstrip and caulking cord designed to seal gaps around windows, doors, and other building envelope penetrations. Sold in a 90-foot roll at 19 ounces, this woodtone-colored cord presses into place without tools or adhesive, making it a fast solution for air and moisture infiltration. Beyond window sealing, it functions as a gasketing material, sound deadener, insect barrier, crack filler, and general void plug. HVAC technicians, insulation contractors, and building maintenance professionals use it wherever a flexible, non-hardening sealant cord is needed.
The B2WT is suited for residential and light commercial applications where gaps need a fast, reusable seal without the cure time of liquid caulks. The woodtone finish blends with brown and wood-tone window frames, door casings, and trim. It is commonly applied to single- and double-hung windows, sliding windows, and door frames prior to or between seasons. It can also be used as a temporary or permanent gasket material around mechanical penetrations in walls and floors.
Designed for use as a fingertip-applied weatherstrip and caulking cord on residential and light commercial windows, doors, and general building envelope gaps where a flexible, non-hardening sealant cord is appropriate.
No special tools or licenses are required to apply this product. Clean and dry the surface before pressing the cord into the gap or joint to ensure adhesion. For window applications, apply with the sash closed to size the bead correctly. The cord is non-hardening and can be removed by hand at the end of the season if temporary sealing is intended.
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