The 100mm Cav Frstop 1hrfr Cavity Stop Sock 1200mm is a trusted fire protection solution designed to safeguard cavity walls by preventing the spread of fire and smoke. Offering a robust 1-hour fire integrity rating along with at least 15 minutes of insulation, this cavity stop sock ensures your building complies with strict fire safety regulations.

Constructed from low resin, non-combustible rock fibre mineral wool, this product is encased in a protective 35-micron polythene sleeve to shield it from weather exposure during installation. Sized at 100mm wide and 1200mm long, it fits seamlessly into standard cavity wall dimensions and fully meets all applicable British Standards and building regulations.

As South London’s leading independent builders merchant, we stock the 100mm Cav Frstop 1hrfr Cavity Stop Sock 1200mm for easy purchase both online and in-store. Benefit from fast same or next-day delivery depending on your location, or visit one of our branches to view our full range of building materials in person.

Our knowledgeable team is always ready to assist with product advice to help you find exactly what you need. With Mitcham Builders Merchants, you get all your building supplies conveniently available under one roof, helping you keep your projects on time and on budget.