Tetrion Hard as Rock Filler 2kg - Exterior Wood Fill

Tetrion Hard as Rock Filler is a fast-setting, ultra-durable filler designed for demanding exterior applications where strength and weather resistance are essential. This 2kg pack sets 5x harder than concrete within one hour, delivering a rock-solid finish that bonds securely to wood, metal and masonry. Once dry, the filler becomes completely waterproof and weather-proof, protecting against rain, frost and UV exposure. Mix it as a standard filler for smoothing surfaces or as a pourable slurry for filling gaps and cavities. Ideal for anchoring fence and gate posts, repairing drainpipe surrounds, restoring worn steps, securing metal fixings and reinforcing security posts and machine bolts. The formula is engineered for outdoor durability without compromise, making it the trusted choice for homeowners and professionals tackling structural repairs that must last through harsh weather conditions.