Soudal’s gap‑filling expanding foam is a one‑component polyurethane foam that cures in contact with moisture. It’s designed to fill gaps, holes, and joints, and provides both insulation and draft control. Ideal for sealing gaps around window and door frames, pipe penetrations, and other spaces where air or sound leakage may occur.
Key Features & Benefits
- Fills & Insulates – Soudal’s gap‑filling expanding foam acts as both a sealant and insulation; blocks drafts, improves thermal and acoustic performance.
- Easy Application – Trigger‑control applicator, one‑hand operation for simple use.
- Versatile Substrate Compatibility – Does not affect most building materials, including electrical cables.
- Cuttable, Paintable, Plasterable – Once cured, you can sand, paint, or plaster over the foam.
- Internal & External Use – Suitable for both indoor and outdoor sealing (note: UV protection required for outdoor applications).
- Re‑usable for 6 Weeks – For certain applicator systems, as long as the can remains unopened.
Recommended Use:
Gap‑filling expanding foam has a variety of applications across residential, commercial, and light industrial builds in Australia. Key use cases include:
- Sealing Gaps Around Window & Door Frames – Prevent drafts and improve energy efficiency.
- Pipe & Conduit Penetrations – Seal around plumbing and electrical penetrations to improve insulation and reduce sound transfer.
- Mounting Built‑in Boxes, Frames & Flexible Tubes – Use the foam for supporting and insulating built‑in fixtures.
How to apply:
- Surface Preparation – Ensure surfaces are clean, dry, and free from dust or grease.
- Shake the Can Well – Helps ensure proper mixing for consistent expansion.
- Apply with Applicator Gun – Use the trigger nozzle to apply the foam, filling the gap approximately 30‑50% full.
- Cure Time – Foam will form a skin in minutes, with full curing typically taking 24 hrs.
- Finish – Once fully cured, the foam can be trimmed, sanded, or plastered over to achieve a clean, finished look. For external use, apply a protective coating to prevent UV degradation.