Aquaseal waterproofing refers to construction chemicals, primarily from Armorsil, used as admixtures (liquid like Aquaseal 300 or powder like Aquaseal 100) mixed into concrete, mortar, and plaster to make them waterproof, reduce cracks, and improve durability by blocking water absorption. It creates an integral, long-lasting barrier against water, suitable for foundations, water tanks, pools, and roofs, protecting structures from water damage and enhancing resistance to weathering.