# 1K PU Membrane Technical overview ## Seamless polyurethane waterproofing for roofs and concrete structures Josoor supplies a one-component polyurethane membrane that cures to form an elastic, seamless waterproof coating. Its crack-bridging character helps maintain a continuous barrier across substrate cracks, while its silk/matt finish suits non-trafficked waterproofing areas. ### Technical overview Material Polyurethane waterproofing membrane Components One-component (1K) Cured layer Elastic, seamless and crack-bridging Finish Silk/matt Documented substrates Concrete, brickwork, roof tiles and roofing felt Service profile Non-trafficked waterproofing areas; not suitable for permanent water immersion ### Where this applies: - Seamless waterproof coatings on roofs. - Waterproof protection of concrete structures in non-trafficked areas. - Waterproofing over compatible brickwork, roof tiles and roofing felt. Not for permanent water immersion. Prepare the substrate and use the primer and any protective finish specified for the supplied grade. Tell us the roof area, substrate and service conditions to receive the product data sheet and a supply quotation. Request a quotation, product data sheet, or supply information directly from Josoor. Loading technical documents… ## Company information - [About Josoor](https://josoorgroup.com/about) - [Contact](https://josoorgroup.com/contact) - [Website terms](https://josoorgroup.com/terms) - [Analytics privacy notice](https://josoorgroup.com/privacy) --- Canonical: https://josoorgroup.com/industries/construction/construction-chemicals/pu-membrane-1k