A marine-grade stainless steel remedial wall tie, dry fixed through small pilot holes to reconnect the outer and inner leaves of a cavity wall. It replaces the original wall ties that have corroded and failed, stabilising leaning or bowing walls without rebuilding them.

HelicalBar™ T316 ties are drilled through the outer leaf, across the cavity, and dry fixed into the inner leaf at 600mm centres. Each tie mechanically locks the two walls together again. The drill holes are repointed with colour-matched mortar. No bricks are removed, no walls knocked down. Most homes are done in 1–2 days.

Clay bricks absorb water and expand over time. The external wall gets far more rain than the internal wall, so the two leaves expand at different rates. That difference snaps the original galvanised wall ties. Once the ties fail, the external wall detaches and begins to lean outward. Paint lines opening around windows are often the first visible clue.

Yes. A wall that has detached from its ties is no longer structurally connected to the building. It’s held up largely by its own weight and mortar friction. Strong winds, vibrations, or further brick expansion can accelerate the lean. The longer it’s left, the worse it gets — and in extreme cases, the wall can collapse outward.