Pure, mould-resistant, acetic, silicone sealant available in over 40 colours to complement the Mapei grout range. Interior and exterior use for sealing expansion and movement joints on horizontal and vertical surfaces. Suitable for bathrooms, kitchens, swimming pools and many other construction projects, mechanical engineering, ship-building, and automobile manufacturing. Revamp your home with ease with this silicone sealant. Backed by bio-block technology, this silicone sealant handles up to 25% movements while providing excellent mould resistance. It's highly elastic and perfect for sealing, filling gaps, bonding various surfaces together, and more.