Cavity Wall Tie Replacement

Wall tie corrosion is a common problem in properties built prior to 1986. Wall ties represent an important support in cavity walls, i.e.. walls constructed with a cavity between the inner (load bearing skin of masonry), and the outer (weather shield), skin. The outer skin is normally extremely thin in relation to its height so without support, would be subject to damage by wind.

Securing a Wall Tie		Wall Tie in Cavity Wall

The installation of metal ties during construction provides the support for the outer wall. However, unless the ties are manufactured from stainless steel or very heavily galvanised mild steel, the ties are prone to rust making the wall more vulnerable and occasionally causing brickwork to bow.

Mild steel ties regrettably have a shorter life than the brickwork in which they are imbedded and during the life of the building, may need replacement with stainless steel wall ties which, because they do not tend to rust, will ensure a permanent solution. From 1945 cavity wall construction became normal for houses and many other buildings.

A number of documented cases of cavity wall distress attributable to wall tie failure, have occurred in Britain and it is now predicted that the issue could potentially affect all cavity wall structures built before 1981, some 10 million dwellings.

How can Damp Experts Ltd help?

In order to assess the current state of existing cavity wall ties Damp Experts Ltd utilise a variety of specialist equipment. Using such equipment enables us to pinpoint the wall ties within the construction and consider the material condition of the wall ties.

After assessing the condition of the cavity wall ties Damp Experts Ltd professionally prepare a fully informative cavity wall tie survey report suggesting the necessary course of action to fix the problem.

Naturally, the corrective work is totally dependent upon the magnitude of the problem and the specific type of wall tie existing the construction. Damp Experts Ltd can supply and fit a variety of high quality stainless steel wall ties to counter virtually every eventuality.

We can supply and fit the following varieties of wall ties:

	Resin/grouted anchors
	Mechanical expansion types
	Resin/grouted and mechanical combination ties
	Lateral Restraint ties
	Crack Stitching ties

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