Selleys N Mastic – Premium Non-Hardening Waterproof Sealing Putty for Long-Lasting, Flexible Sealing of Joints, Windows, and Roofing Stainable No primer required before painting

No primer required before painting

Plexiglass

incinerators etc

Manufactured under a quality system certified as complying with ISO 9001 by an accredited certification body

Selleys N Mastic – Premium Non-Hardening Waterproof Sealing Putty for Long-Lasting, Flexible Sealing of Joints, Windows, and Roofing Stainable No primer required before paintingSelleys 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,