Dr.Fixit Polybar / Waterbar 20m

Swellable Water Bar, a hydrophilic rubber seal used for waterproofing concrete construction joints, tunnels, basements, and tanks. [1, 2] It is designed to expand upon contact with water—sometimes up to 300% to 400% of its original volume—to create a permanent, watertight seal. [1, 2] The material is flexible and elastic, allowing it to adapt to micro-movements and structural cracks to prevent water infiltration.