Best Expanding Foams of 2025

The Soudal Expanding Foam Filler is a practical choice for your DIY projects. This box of 12, each containing 750ml, ensures you have enough foam for various applications. Ideal for sealing gaps and cracks, it provides excellent insulation and soundproofing benefits. The gun-grade formulation allows for precise application, making it easier for you to manage the foam without wastage. Overall, this product is designed to enhance your building and repair tasks effectively.

The GORILLA FILLER Expanding Foam is a waterproof solution designed to effectively fill gaps and cracks in various materials, including stone, wood, brick, and metal. Its expanding formula allows you to squeeze it into tight spaces, ensuring a snug fit that prevents further damage. You will appreciate how it can be easily cut, sawn, painted, or sanded after application, providing you with versatility for any project. This filler is perfect for tackling large holes and cracks, making your repairs both efficient and long-lasting.

The Gorilla Filler Expanding Foam comes in two 500ml cans, offering a reliable solution for your weatherproofing needs. This expanding foam is particularly useful for sealing gaps and cracks, ensuring your home remains insulated against the elements. Its stone colour allows for a seamless blend with various surfaces, making it perfect for outdoor applications. With two cans included, you can tackle multiple projects without the worry of running out, providing you with convenience and efficiency.

The Soudal Genius Gun Foam offers excellent thermal and acoustic insulation, making it ideal for keeping your home comfortable and quiet. With its high filling capacity, you can efficiently fill gaps and cracks, ensuring a more energy-efficient environment. The good adhesion ensures that the foam sticks well to various surfaces, providing a reliable seal. Finally, the Genius Gun applicator allows for easy and precise application, giving you better control while working on your projects.

The Soudal Expanding Foam is perfect for filling and insulating holes, cavities, and gaps in various construction applications. Its excellent adhesion ensures it bonds well to common building materials, making your projects easier and more reliable. You can use it effectively on stone, wood, and bricks, ensuring a strong and durable finish. Additionally, this foam provides outstanding acoustic and thermal insulation properties, helping to create a more comfortable and energy-efficient environment in your home.

The fischer Triple X Foam is designed to make your tasks easier and more efficient. With rapid-hardening properties, it significantly reduces your processing time, allowing you to move on to the next job swiftly. The use of an applicator pistol helps to minimise fatigue while ensuring economical dosing, making it comfortable to use. Additionally, its noise-reducing features contribute to a quieter working environment, while the foam's resistance to rotting ensures durability and long-lasting performance. Overall, this product offers convenience and reliability for your projects.

The Soudal Foam Kit is an excellent choice for tackling various building projects. It includes six 750ml cans of expanding foam, which is perfect for sealing gaps and improving insulation in your home. The kit also comes with a gun, making it easy for you to apply the foam precisely where needed. Additionally, the included cleaner ensures that you can maintain your tools, keeping everything in top condition for future use. This comprehensive kit is designed to provide convenience and efficiency for all your DIY tasks.

The Soudal Expanding Foam is a ready-to-use product that requires no mixing, making it incredibly convenient for your projects. With a high filling capacity, each 750ml can yields up to 3.1 litres, ensuring you have enough foam for various applications. It is also environmentally friendly, being free from harmful substances like Freon, HCFC, and CFC. Additionally, it cures quickly, allowing you to cut the foam within just 25 minutes, which saves you valuable time on your tasks.

The fischer B3 Expanding Foam is an excellent choice for your sealing and insulation needs. Its rapid-hardening feature means you can complete your projects in less time, making it efficient for busy individuals. Using an applicator pistol reduces fatigue during application, allowing for greater comfort while working. Additionally, its noise-reducing properties create a quieter working environment, which is especially beneficial in residential areas. Plus, this foam is resistant to rotting, ensuring long-lasting performance in various conditions.

The Soudal Soudafoam Filler is a reliable expanding foam designed for various filling tasks. With proven Soudal technology, you can trust its performance for effective insulation and sealing. Originating from the United Kingdom, this product boasts a manageable package weight of just 0.89 kilograms, making it easy to handle during application. As a single item, it offers convenience for both DIY enthusiasts and professionals alike, ensuring you have all you need to tackle gaps and crevices efficiently.