This pool and spa silicone is a one-part, low odor, neutral cure, mildew resistant, non-corrosive silicone adhesive/sealant. It is designed to adhere ceramic tile to many substrates such as acrylic, fiberglass, ABS, PVC, wood, and masonry. It also provides an excellent seal for spa jets and fittings. Ideal for bathroom tile installations. Waterproof/weatherproof seal. Non-sag formula. VOC is compliant in all 50 states. Chlorine resistance.