ALL PURPOSE EXPANDING FOAM: 151 Gorilla Filler expands on contact to fill and seal awkward cracks, holes and cavities. Ideal for DIY repairs around walls, brickwork, timber frames and metal fittings. AIRTIGHT WEATHERPROOF SEAL: Once hardened, Gorilla Filler forms an airtight, weatherproof seal for dependable interior and exterior use. Great around windows, pipes, brickwork and other areas exposed to draughts or weather. EXPANDS TO FILL: The foam expands on contact, helping it reach into uneven spaces and fill areas inside a hole, gap or crack. Handy for deep wall cracks, cavities and hard-to-reach repair jobs. MULTI SURFACE USE: Compatible for use on stone, wood, brick and metal, this strong gap filler suits a wide range of DIY jobs. Keep it ready for wall repairs, timber gaps, masonry work and general maintenance. PRECISE APPLICATION: A plastic applicator nozzle is included for precise application, helping direct foam exactly where it is needed. Useful for narrow gaps, wall cracks and awkward cavities where neat control matters. CUT SAND AND PAINT: Once fully dry, the hardened foam can be cut, sawn, sanded and painted for a neater finished repair. Ideal when filling around frames, wall gaps or cavities before decorating. DEEP FILL MADE EASY: Deep fill jobs feel far more manageable as the foam squeezes into gaps before expanding to fill the space. A practical choice for a deep crack in a wall, larger voids and awkward holes. DIY AND TRADE ESSENTIAL: A useful decorator’s essential and builder’s essential for repairs, fitting and finishing work. Keep the 500ml can close by for renovation jobs, maintenance tasks or unexpected gaps. INDOOR AND OUTDOOR: Suitable as an indoor sealant or outdoor sealant where a strong filler is needed on compatible surfaces. Use it around wall openings, window areas, pipe penetrations and exterior gaps. LARGE 500ML CAN: The large size 500ml can gives plenty of foam for multiple filling and sealing jobs. Ideal for bigger DIY projects, home renovations or keeping in the toolkit for cracks and gaps as they appear.