Expanding Foam

Explore our full range of Expanding Foam, ideal for filling, sealing, and insulating gaps, cracks, and voids in walls, floors, roofs, and around doors and windows. Whether you're working on a construction site or home improvement project, expanding foam offers excellent thermal and acoustic insulation while preventing draughts, moisture, and pests. Available in handheld and gun-grade options, our foams include fire-rated, quick-setting, and multi-purpose formulations to suit both interior and exterior use. Shop now for high-performance PU expanding foam with fast UK delivery and competitive prices.

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  • Soudal Combi-box Soudafoam Window & Door Applicator PackSoudal Combi-box Soudafoam Window & Door Applicator Pack
      Soudal
      Soudal Combi-box Soudafoam Window & Door Applicator Pack
      The Soudafoam Gun Window & Door Combi-Box contains 10x 750ml Soudafoam Window and Door, a compact foam applicator gun and 500ml foam and gun cleaner. Suitable for professional filling around PVCu, aluminium and wooden window and doors.  Very good bonding properties Excellent stability, no...
      £77.92
      incl. VAT
      £77.92
    • Bond It Mega Foam Gun/Aerosol PU Expanding Foam - Beige 750ml
        Bond-it
        Bond It Mega Foam Gun/Aerosol PU Expanding Foam - Beige 750ml
        Bond It Mega Foam is a simple, easy to use one component polyurethane assembly foam, it's based on a moisture-curing polyurethane prepolymer. This unique formula delivers an expanding foam that never shrinks, preventing further deformation or disruption to its applied area. Universal applicator Valve...
        £5.31
        incl. VAT
        £5.31
      • Everbuild No Waste Expanding Foam – 750ml
          Everbuild
          Everbuild No Waste Expanding Foam – 750ml
          The No Waste Expanding Foam by Everbuild is the ultimate, unrivalled expanding foam on the market that's applied directly from the can. This is because most conventional expanding foams clog after one application due to the foam curing inside the nozzle. Re-usability, compared to...
          £9.06
          incl. VAT
          £9.06
        • Ronseal Expanding Foam Filler - 500ml
            Ronseal
            Ronseal Expanding Foam Filler - 500ml
            The Expanding Foam Filler by Ronseal offers excellent filling properties for any size hole; applied directly from the can, you can confidently fill any void. Its unique formula delivers excellent properties, preventing any chance of it shrinking or cracking over time. Perfect to fill...
            £6.21
            incl. VAT
            £6.21
          • Soudafoam Window & Door Xtra Gun Grade, Champagne - 750ml
              Soudal
              Soudafoam Window & Door Xtra Gun Grade, Champagne - 750ml
              Gun Grade high yield polyurethane expanding foam filler. Window & Door filling formulation with high linear expansion. Gun Grade high yield polyurethane expanding foam filler. Window & Door filling formulation with high linear expansion. Fills 50% more metres than standard Soudafoam Window & Door....
              £6.79
              incl. VAT
              £6.79
            • Soudal Soudafoam Window & Door Gun Grade – 750ml
                Soudal
                Soudal Soudafoam Window & Door Gun Grade – 750ml
                The Soudafoam Gun-Grade Window and Door by Soudal is an excellent product perfect for installing doors and windows. It offers fantastic stability and gap-filling properties, expanding up to 28 litres, all compressed into a convenient 750ml aerosol can. Fantastic stability with no shrinkage or...
                £5.72
                incl. VAT
                £5.72
              • Bond It B1 Fire Resistant PU Gun Grade Expanding Foam - Pink 750ml
                  Bond-it
                  Bond It B1 Fire Resistant PU Gun Grade Expanding Foam - Pink 750ml
                  The Bond It B1 Fire Resistant PU Expanding Foam foam is suitable for most common building materials. However, it will not stick to surfaces such as polyethene, silicone, oil, grease and similar substrates. B1 Fire Rating according to EN1366‐4+A1:2010 and EN13501‐ 2+A1:2013 and DIN4102....
                  £6.30
                  incl. VAT
                  £6.30
                • Soudal Insulating Foam Genius Gun 750ml - Champagne
                    Soudal
                    Soudal Insulating Foam Genius Gun 750ml - Champagne
                    Fantastic stability, no shrinkage or post-expansion Overall, excellent filling characteristics Outstanding insulation value, thermal and acoustical Brilliant installation performance The Genius Gun Insulating Foam by Soudal is an excellent polyurethane expanding foam that provides fantastic gap-filling properties. Its overall adhesion to common surfaces is...
                    £6.89
                    incl. VAT
                    £6.89
                  • Soudal Trade Expanding Foam Mini 150ml
                      Soudal
                      Soudal Trade Expanding Foam Mini 150ml
                      A ready to use, one-component, self expanding PU foam with an excellent adhesion to most common surfaces.  Excellent stability, no shrinkage or post expansion High insulation value, thermal and acoustic Good bonding properties High filling capacity Moisture curing, self-expanding polyurethane foam adhering to all...
                      £2.59
                      incl. VAT
                      £2.59
                    • Soudal B2 Fire Rated Expanding Foam Gun Grade - 750ml
                        Soudal
                        Soudal B2 Fire Rated Expanding Foam Gun Grade - 750ml
                        The B2 Fire Rated Expanding Foam by Soudal is a general-purpose expanding foam that provides exceptional bonding and filling to the most common surfaces around a property. It's forged with a unique composite that offers exceptional thermal resistance properties alongside acoustic and insulation value....
                        £5.56
                        incl. VAT
                        £5.56
                      • Soudal B1 Fire Class Expanding Foam Handheld - 750ml
                          Soudal
                          Soudal B1 Fire Class Expanding Foam Handheld - 750ml
                          The B1 Trade Expanding Foam by Soudal is an excellent expanding foam, ideal for various applications throughout a building. It's ideal for installing windows and door frames, general cavity filling, and sealing openings in roof construction. It improves thermal isolation in cooling systems and...
                          £6.73
                          incl. VAT
                          £6.73
                        • Soudal Handheld Gap Filler Expanding Foam - Champagne 750ml
                            Soudal
                            Soudal Handheld Gap Filler Expanding Foam - Champagne 750ml
                            The Trade Expanding Foam by Soudal is the ultimate general-purpose expanding foam for tradespeople or DIYers. It offers outstanding filling capacity, with the most common surface suitable for adhering. With its fantastic acoustic and thermal properties, its value as an expanding foam outweighs competitors....
                            £4.21
                            incl. VAT
                            £4.21
                          • Soudafoam Gap Filler Genius Gun - 600ml
                              Soudal
                              Soudafoam Gap Filler Genius Gun - 600ml
                              Discover Gap Filler Genius, the ultimate solution for sealing, insulating, and filling gaps in construction and DIY projects. This professional-grade expanding foam delivers exceptional 3D expansion for maximum coverage and a perfect fit. Easy to Use, One-Component Formula – No mixing required, ready to...
                              £4.34
                              incl. VAT
                              £4.34
                            • Everbuild Exact Gap Foam - 750mlEverbuild Exact Gap Foam - 750ml
                                Everbuild
                                Everbuild Exact Gap Foam - 750ml
                                The Exact Gap Foam by Everbuild is a high-quality, precise expanding foam that is formulated to deliver a long-lasting, robust filler. It's crafted specially by Everbuild technicians to prevent wasting expanding foam, which is common amongst conventional expanding foams. This product's lack of expansion compared to...
                                £7.47
                                incl. VAT
                                £7.47
                              • Soudafoam Gun Gap Filler Expanding Foam 750ml
                                  Soudal
                                  Soudafoam Gun Gap Filler Expanding Foam 750ml
                                  The Soudafoam Gun Gap Filler by Soudal is an exceptional polyurethane expanding foam with fantastic gap-filling and adhesive properties. It can expand to fill hard-to-reach areas, ensuring every crack and crevice is bridged. Its overall composite is freon-free, ensuring no harmful effects on the...
                                  £5.15
                                  incl. VAT
                                  £5.15
                                • Soudal Gap Filler Expanding Foam Gun Grade - 750ml
                                    Soudal
                                    Soudal Gap Filler Expanding Foam Gun Grade - 750ml
                                    The Trade Expanding Gunfoam by Soudal is the ultimate general-purpose expanding foam for tradespeople or DIYers. It offers outstanding filling capacity, with the most common surface suitable for adhering. With its fantastic acoustic and thermal properties, its value as an expanding foam outweighs competitors....
                                    £4.21
                                    incl. VAT
                                    £4.21
                                  • Soudal Genius Gun Gap Filling Foam - 750ml
                                    Soudal
                                    Soudal Genius Gun Gap Filling Foam - 750ml
                                    The Genius Gun Gap Filling and Expanding Foam by Soudal is a versatile, fantastic polyurethane gap-filling expansion foam that provides excellent properties. Firstly, the insulation value is unmatched, achieving 37mW/m.K and the sound insulation achieves 56 dB. Outstanding stability, no post-expansion or shrinkage Fantastic...
                                    £5.99
                                    incl. VAT
                                    £5.99
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