20x30mm 5M per Roll Bentonite Butyl Rubber Expanding Waterstop Strip for Basement Swimming Pool Construction Waterproof

20x30mm 5M per Roll Bentonite Butyl Rubber Expanding Waterstop Strip for Basement, Swimming Pool, Construction Waterproofing, COD Philippines Ideal Application Scenarios (Philippine Projects)• Basement & Foundation Waterproofing: Seal construction joints in basement walls and slabs to prevent groundwater seepage in flood-prone Philippine areas.• Swimming Pool Construction: Seal concrete joints in pool shells, decks, and plumbing penetrations to stop water loss and leaks.• Commercial Construction: Use in tunnels, water tanks, sewage systems, and retaining walls for long-term waterproofing.• Residential Renovation: DIY waterproofing for home basements, outdoor fountains, and concrete patios.