Key Takeaways:
Gaps in your building envelope ruin both airtightness and acoustic performance.
Expanding foams create a permanent thermal barrier while keeping the structure airtight.
Our Australian range bonds to concrete, brick, metal, and PVC.
Soudafoam SMX and our flexible foams improve energy efficiency without relying on harmful chemicals.
Thermal Insulation
Energy efficiency depends on keeping the building envelope airtight. Even small gaps in a wall or roof let warm air escape and increase your heating bills. You can stop this heat loss by using professional expanding foams to fill seams, joints, and service penetrations. These single-component polyurethane systems restore the thermal barrier and block out street noise.
Our range provides strong adhesion and stable expansion for a clean finish on site. Flexible Insulation Expanding Foam stays elastic to handle structural movement without the seal cracking. This prevents drafts around windows and doors as the building settles. For healthy home projects, Soudafoam SMX delivers an isocyanate-free formula that maintains excellent stability.
We offer several application formats to suit your specific job. Gap Filling Expanding Foam – Gun Grade gives tradespeople precise control for high-volume work. If you prefer an integrated applicator, the standard Gap Filling Expanding Foam features our Genius Gun system so you can reuse the can for up to six weeks. For quick, one-off tasks, Gap Filling Expanding Foam – Straw provides fast and reliable coverage.
Why Choose Soudal Foam for Thermal Insulation
Complete Airtightness: Blocks unwanted air leaks and moisture ingress.
Thermal Control: Provides high insulation values to meet Australian building codes.
Stable Expansion: Minimal post-expansion prevents pressure on surrounding frames.
Versatile Bonding: Works on almost all common building materials.
Ready to start your project? Use our Store Locator to find your nearest Soudal stockist and grab the right thermal insulation tools today.
FAQs
What is the best expanding foam for thermal insulation?
Standard Gap Filling Expanding Foam is excellent for static voids in walls and ceilings. If the joint experiences movement, such as around a window frame, you must use a flexible product like Flexible Insulation Expanding Foam.
Does expanding foam stop drafts?
Yes. Expanding foam forces itself into tiny crevices and completely blocks the airflow. This creates an airtight seal that stops cold drafts and prevents warm air from escaping your home.
Is expanding foam safe to use indoors?
Yes, our standard foams are safe once fully cured. If you are working on a project with strict indoor air quality requirements, choose Soudafoam SMX. It is an isocyanate-free and low-VOC option built for healthy homes.
How do I clean up wet expanding foam?
If you spill foam before it cures, wipe it up immediately with an acetone-based foam cleaner. Never use water on wet foam, as moisture forces the polyurethane to cure and harden instantly.