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., WEATHERPROOF SEAL: Once hardened, the foam forms an airtight, weatherproof seal that helps close unwanted gaps. Use it for suitable interior and exterior jobs around brick, stone, wood or metal where a strong gap filler is needed., INDOOR AND OUTDOOR JOBS: Suitable for many interior and exterior use projects when used as directed in a well-ventilated area. It works as a versatile wall, window or gap sealant for home repairs and maintenance., FILLS DEEP GAPS: Deep fill is made easy as the expanding foam squeezes into gaps and grows to fill the area inside a hole, gap or crack. Handy for a deep crack in a wall, larger cavities or hard-to-reach spaces., EASY TO USE FOAM FILLER: Shake, fit the nozzle and apply the foam into the required cavity, where it expands quickly on contact.