Selleys N Mastic – Premium Non-Hardening Waterproof Sealing Putty for Long-Lasting, Flexible Sealing of Joints, Windows, and Roofing Cardboard UV resistant and long lasting

UV resistant and long lasting in all weather extremes

Cure Shrinkage 0

as some stores may have a limited range

Low odour during application

Selleys N Mastic – Premium Non-Hardening Waterproof Sealing Putty for Long-Lasting, Flexible Sealing of Joints, Windows, and Roofing Cardboard UV resistant and long lastingSelleys N Mastic is a non hardening, waterproof sealing putty designed for a wide range of applications where long lasting flexibility is crucial. Ideal for sealing joints, gaps around windows, and roofing, it ensures that structures remain protected from water ingress. The unique formula remains pliable, making it perfect for environments where movement and expansion are expected. Whether you're sealing an outdoor roof gutter, securing window frames,