Bluebird Cavity Screw Ties – Stainless Steel – Box of 100

Bluebird cavity screw ties offer a straightforward solution for forming new brick, block or stone leaves against existing single-skin walls. Made from austenitic stainless steel, these ties resist corrosion in exposed and cavity wall conditions, making them suitable for both internal and external applications. The screw-in design means no resin or specialist equipment is required just drill, plug, and drive the tie home.

Why tradespeople choose Bluebird screw ties

These ties have earned their reputation on site because they actually speed up the job. Drill a 45mm hole into the existing masonry, tap in the supplied plug, and screw the tie fully home. The tie can then be bent up or down to align with the mortar bed of your new work. Five ties per square metre gives you the structural connection you need without the fuss of mixing adhesives or waiting for cure times.

The BBA approval matters here. It means the product has been independently tested and certified for structural use in cavity wall construction. When building control asks questions, you have got the paperwork to back up your work. That peace of mind is worth having, especially on jobs where the specification is being watched closely.

Versatility across cavity widths

Bluebird manufacture these ties in a wide range of sizes to suit cavities from 50mm right up to 280mm. Each size has a corresponding overall length, so you get the correct embedment depth into both the existing wall and the new leaf. Whether you are tying in a standard house extension or dealing with a wider cavity on a commercial project, there is a size that fits.

The kit includes insulation retaining clips, which hold cavity insulation in place against the inner leaf. This saves you sourcing separate clips and keeps the cavity clear for the brickwork. Small details like this add up to a tidier job and less time spent hunting for bits.

Stainless steel construction means these ties will outlast the building they are holding together. For coastal locations, exposed elevations or anywhere salt and moisture are a concern, stainless is the only sensible choice. The austenitic grade used here provides excellent resistance to pitting and stress corrosion.