How to retrofit helical wall ties in existing brick and masonry walls. Instructions for remedial wall tie replacement:DRILL a slender pilot hole in the wall.. Provided that your walls are of a typical masonry cavity wall make-up, with each leaf being at least 90mm in thickness, you will need to install the remedial tying system at the rate of 2.5 wall ties per m2. Wall tie spacing should be at 900mm centres vertically by 450mm centres horizontally, in a staggered 'domino 5' pattern (PD 6697: 2010).
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Debt free and plan on staying that way!!!! I did some research on the net and you can buy 150 replacement wall ties for £130. I am guessing that as they are sold in packs of 150 that is enough to do an average size house. I am sure the work could be done in a day by two men.. The cost of cavity wall tie replacement. The wall ties themselves aren't that expensive, but the cost of the overall project can be impacted by a number of things. These include the quantity and length of the ties needed if specialist insertion tools are needed if there are cosmetic repairs also needed and if scaffolding is required to reach.
