Bostik Pro Sealant PU91 Polyurethane Sealant for High Movement Joints Black 300ml (30623103)

Bostik PU91 Black Silicone is engineered for professionals who demand performance in construction projects with high movement. This versatile polyurethane sealant stands out due to its high modulus and elastic properties, enabling it to endure the stresses typically found in both interior and exterior applications. Its exceptional adhesion to a broad spectrum of construction materials makes it an outstanding choice for sealing various joints, including expansion joints, perimeter joints, and siding joints. It is particularly effective in modular housing, precast concrete joints, and pedestrian walkways, adapting seamlessly to roofing projects as well. Designed with excellent slump and sag resistance, Bostik PU91 minimizes shrinkage and outgassing during the curing process. With its low MDI technology, it ensures user safety without compromising on quality. Ideal for weatherproofing, this sealant maintains its permanent elasticity, making it suitable for both horizontal and vertical joints on façades and expansion areas. The Black Bostik PU91 silicone meets stringent BS EN 15651:2017 standards.