Bond It B3 All Purpose Fill & Fix Expanding PU Foam 750ml is a high‑performance, single‑component polyurethane foam designed for professional tradespeople and DIY users who need a reliable solution for sealing, filling, and insulating. Formulated for excellent expansion and adhesion, this aerosol‑grade foam is ideal for a wide range of construction, installation, and repair applications.
This versatile expanding PU foam adheres strongly to most common building materials, including brick, concrete, stone, plaster, wood, metal, and many plastics. Once applied, it expands to fill gaps and cavities, creating a durable, long‑lasting seal that improves thermal and acoustic insulation. Whether you’re installing door frames, sealing around window units, filling service penetrations, or tackling general gap‑filling tasks, Bond It B3 delivers consistent results with minimal shrinkage.
The foam cures to a rigid, semi‑flexible structure that can be trimmed, cut, sanded, or painted once fully set, allowing for a clean and professional finish. Its excellent insulating properties make it especially useful for reducing drafts, preventing heat loss, and blocking sound transmission in both residential and commercial environments.
