ARC Cavity Stop Sock 125mm

The 125mm ARC cavity stop sock is a passive fire protection product designed to limit the spread of fire and smoke within cavity wall constructions. It is commonly specified in residential and commercial buildings to support fire compartmentation and compliance with cavity wall fire-stopping requirements.

This ARC cavity fire sock is intended for use within 125mm cavities in masonry and timber frame walls. Once installed, the sock compresses within the cavity to form a continuous fire barrier, helping to restrict airflow and reduce the risk of fire spread through concealed voids.

The product is suitable for installation in external cavity walls, party walls, and internal compartment walls where cavity fire stopping is required as part of the building’s fire strategy. Often referred to as ARC fire socks, they form an integral component of passive fire protection systems.

Each unit is supplied in a 1200mm length and sold individually, allowing accurate quantity specification. Quantity discounts are available for full pack purchases, supporting cost-effective installation on larger projects.

Correct sizing is essential to ensure effective compression and fire performance. The 125mm ARC cavity stop sock provides a dependable solution for sealing cavity walls in line with fire safety requirements.