Expanding Foams for Buildings & Construction

Soudal’s expanding foams provide the ultimate solutions for gap filling, insulation, and sealing in both construction and DIY applications. Available in straw-applied and gun-applied formats, these foams offer excellent performance with high yield, thermal and acoustic insulation properties, and strong adhesion to most building materials. Whether you need to fill gaps, install windows, or seal service penetrations, Soudal’s expanding foams like Soudafoam SMX and Soudafoam FR HY offer the precision and reliability you need. Choose Soudal for high-performance expanding foams designed to meet all your sealing and insulation needs.

Gap Filling Expanding Foam

Fills & Insulates
Re-usable for 6 weeks
One handed operation

Straw Gap Filling Expanding Foam

Fills & Insulates
triple expansion
Very good filling capacities

Gun Grade Trigger Expanding Foam

Fills & Insulates
Threaded Adaptor
High yield

Flexible Insulation Foam – Gun Grade

3 time more flexible than standard PU foam
Airtight
Excellent stability

Flexible Insulation Foam

Remains flexible
Re-usable for 4 weeks
One handed operation

Soudafoam FR HY

High filling capacity
High insulation value
Very good adhesion

Soudafoam GUN FR HY

Gun Grade
High insulation value
Very good adhesion

Soudafoam SMX

isocyanate-free
Fills & Insulates
Excellent stability

Gun & Foam Cleaner

Fast acting
High quality
Ready to use

Expanding Foams for Buildings & Construction

Soudal’s professional-grade expanding foams are perfect for insulation, sealing, and gap filling in both construction and DIY projects. Available in gun-applied and straw-applied formats, these foams offer high yield, excellent dimensional stability, and reliable performance for a wide range of site needs. Whether you’re filling gaps, installing windows, or sealing service penetrations, Soudal expanding foams ensure consistent, long-lasting results.

Key Benefits of Soudal Expanding Foams:

High yield and excellent dimensional stability for efficient application.
Strong adhesion to most building materials for a secure bond.
Thermal and acoustic insulation properties for enhanced energy efficiency and noise reduction.
Fire-rated and specialist foams available for specific construction needs.

Our Expanding Foam Range Includes:

Gap Filling Expanding Foam
Straw gap filling foam for easy application in tight spaces.
Gun grade trigger expanding foam with high yield and threaded adaptor for professional use.

Flexible Insulation Foam:

Soudafoam SMX: 3x more flexible than standard PU foam, providing excellent stability and airtight seals.
Soudafoam FR HY: Fire-rated, with high filling capacity and very good adhesion for demanding applications.
Soudafoam GUN FR HY: Gun-applied fire-rated foam offering high insulation value and strong adhesion.

Gun & Foam Cleaner: Fast-acting and high quality, designed to clean and maintain foam guns and accessories.

Typical Expanding Foam Applications:

Filling gaps and voids for effective insulation.
Installing windows and doors with precision.
Sealing service penetrations to prevent air and water leaks.

To learn more contact us today or find our where to buy our Expanding Foam Products using our store locator.