View All Caulk & Fillers

Browse our complete range of Caulk & Fillers, designed for sealing, repairing, and finishing a variety of surfaces in both professional and DIY projects. From decorators’ caulk for smooth, paintable joints to gap fillers, wood fillers, and polyfilla, we have the right product for every application. Ideal for use around windows, doors, skirting boards, ceilings, and wooden surfaces, our fillers help eliminate cracks, gaps, and imperfections with long-lasting, flexible results. Suitable for interior and exterior use, and compatible with a wide range of materials including plaster, timber, masonry, and uPVC. Shop top brands like Everbuild, Soudal, Polycell, and more. Order now for high-performance caulks and fillers with fast UK delivery and competitive prices.

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  • Soudal 500g Repair Express Two Part Wood Filler - Redwood
      Soudal
      Soudal 500g Repair Express Two Part Wood Filler - Redwood
      A high strength, rapid curing two-part wood filler suitable for all common wood filling applications such as doors, window sills, frames and most general repairs in cracks and holes. It can even be used for repairs on rot affected timber.  Internal and external applications...
      £7.56
      incl. VAT
      £7.56
    • 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 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
          • Soudal Decorators Caulk - White 380ml
              Soudal
              Soudal Decorators Caulk - White 380ml
              The Soudal Decorators Caulk is a high-quality, plasto-elastic one-component joint sealant based on acrylic dispersions. It is ideal for sealing joints on window sills, between plinths and walls, and between masonry. Can be painted over after curing Colourfast and waterproof after curing Very good...
              £2.68
              incl. VAT
              £2.68
            • 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
                • 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
                                  • 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
                                    • 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
                                      • Everbuild Caulk Once – White 380mlEverbuild Caulk Once – White 380ml
                                        Everbuild
                                        Everbuild Caulk Once – White 380ml
                                        The Caulk Once by Everbuild is the ultimate, unrivalled caulk that delivers a long-lasting, robust filler achieved through its superior, high-quality, advanced polymer composite. Everbuild utilised its high-performance properties, enabling all types of paints or wallpaper to be applied over the filler without concerns of weak...
                                        £2.11
                                        incl. VAT
                                        £2.11
                                        Out Of Stock
                                        Out Of Stock
                                      • 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
                                        Out Of Stock
                                        Out Of Stock

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