K11 One part Polyurethane Sealant is a premium quality one component low modulus sealant designed to replace conventional one part Polysulphide sealants in most applications. The product remains permanently flexible to accommodate joint movement (25%) & adheres to most building surfaces. such as concrete, ceramics, wood, metal, u PVC etc. K11 Polyurethane Sealant is fast curing (3mm/day), can be overpainted when cured (if required) & is highly durable with excellent weathering properties & high resistance to atmospheric pollution. K11 Polyurethane sealant conforms to SNJF & ISO 11600 standards.* Excellent adhesion to most building substrates.* Non staining.* Overpaintable. For most construction, expansion & dilation joints in brickwork, stone & concrete structures, vertical & horizontal. Pointing of perimeter joints around timber window & door frames. Capping to beaded glazing systems. Sealing & pointing in roofline applications & to composite panels, metal panels & steel structures. Sealing & pointing pre-cast concrete panels.