Xtreme Premium Anti‑Mould Silicone is a top-tier, one-part acetoxy-cure silicone sealant designed for high-humidity environments like bathrooms, kitchens, wet rooms, and shower areas. It contains a powerful built-in fungicide, guaranteeing protection against mould, mildew, and bacterial growth for up to 10 years.
Permanently waterproof and CE-compliant with EN 15651‑1 F INT & EN 15651‑3 XS1, it maintains flexibility and adhesion even under frequent water contact.
Suitable for ceramic tiles, glazed surfaces, glass, stainless steel, plastics, aluminium, painted wood, and brick, it offers primerless adhesion on many substrates—though porous surfaces like brick or PVC may need a primer.
Xtreme is easy to apply from a standard 310 ml cartridge using a caulking gun. It provides smooth tooling, rapid skin formation (typically around 10–15 minutes), and full cure in approximately 24 hours, delivering a clean, durable seal.