Did you know that faulty wall ties could cause your wall to collapse completely? Imperfections within your wall may be unnoticeable at first, but if left to fester and develop, you’ll begin to see the cracks. These horizontal cracks (and bulges) will begin to appear in your brickwork and before you know it, your wall could be eroding. Therefore, if you are the owner of a property, no matter how big or small, it is vital that you know how to replace your wall ties…
You should be fully aware that wall ties are crucial to a building. They tie the brickwork together and ensure that it stays put. Think of your wall ties as a game of Jenga – a sturdy tower, but as soon as one part falls, the rest of it falls too. The first signs of faulty wall ties (as stated previously) are usually bulges and horizontal cracks. This can cause the wall ties and the bricks to become ‘independent’ of each other. As a result, your building can become structurally unsafe and could be a danger to those inside or around it.
Replacement wall ties are produced in a variety of lengths, due to the fact that the width of the cavity can vary quite considerably between cavity walls. At this stage, it is important to mention that if the horizontal cracks in your brickwork are highly visible, then you may have gone past the stage of a simple DIY job. It may be more appropriate for you to hire a qualified property repairer. If, however, you feel that you are up to the job yourself, then here is a step-by-step guide on the procedure of replacing wall ties:
- To begin with, you need to establish what kind of wall ties you have. These could strip ties (vertical twist/fishtail) or wire ties (double triangle/butterfly). The life expectancy of a strip tie is 30 – 60 years, whereas that of a wire tire is only 15 – 30 years.
- Identify the positions of your existing wall ties. Wall tie replacement should be carried out in a diamond formation with your remedial wall ties at 900 mm in courses set 450 mm apart.
- Your original wall ties need to be isolated in order to prevent further damage. This can be achieved by fitting clan sleeves around the external end of the old wall tie, or removing the bricks to completely replace the old wall tie(s).
- With a drill, make a 5-6mm pilot hole to place your new wall tie. Then, with a hammer drill, drive the tie through the outer leaf and into the inner leaf. The new wall tie has fins that cut and grip into the substrate, holding both the inner and outer leaf into place.
So, there you have it – your complete, step-to-step guide on how to replace your wall ties. With any luck (if you opt for strip ties) you won’t have to do this again for at least another 30 years!! You are able to buy wall ties online at Pam Ties.