AB Tools Stainless Steel Type 4 Cavity Wall Tie 275mm - 125-150mm - 5Pk

A cavity wall tie's primary purpose is to connect the inner and outer leaves of a cavity wall, providing structural stability and preventing them from separating.

Type 4 typically refers to a specific design or standard for cavity wall ties, often relating to its material, shape, and intended application, such as this stainless steel variant with a double drip feature.

According to the specifications, this tie is suitable for buildings up to 10m high and compliant with BS EN 845-1. For taller structures, consult relevant building codes and structural engineer recommendations.

Grade 304 stainless steel is chosen for its high resistance to rust and corrosion, making it ideal for building components exposed to moisture and varying weather conditions, ensuring a long service life.

The double drip feature is designed to prevent water that penetrates the outer wall from travelling across the cavity via the tie and causing dampness on the inner wall. It helps to channel moisture downwards.

Each pack contains 5 x AB Tools Stainless Steel Type 4 Cavity Wall Ties.

While designed for new builds, these ties can be used for retrofitting when existing ties fail or are insufficient, following appropriate installation methods for existing structures.

Verify the cavity width. This tie is designed for 125-150mm cavities. If the cavity is wider or narrower, a different type or size of wall tie may be required.

Ensure the tie was installed with the double drip feature correctly oriented to channel water downwards. Check for other potential sources of water ingress in the building envelope.

Ensure mortar beds are adequately prepared. The austenitic stainless steel can be gently manipulated if needed, but avoid excessive force that could damage surrounding masonry.