Removing old wall ties

[trevorbayliss]

This summer i am going to replace the wall ties. It is pretty straight forward, but i have not found the answer on how i remove the old butterfly ties?

Anyone know how i do this. They do need replacing as they are causing cracking and a little brick movement.

 

[noseall]

You don't remove the old.

Look at "Helifix" wall ties.

 

[trevorbayliss]

I will be using the helixfix BUT what do you do with the problem of the old corroding ties ?

They cause the bricks to expand, so cracking the mortar and bulging if the bricks cannot move. This is my problem, so the old ties must be neutralised.

How is this done ? I have seen a video of someone cutting the mortar around an old tie and filling the joint with insulation fibre from the loft.

Any ideas ?

 

[maltaron]

How do you know they are corroded?

 

[trevorbayliss]

I have cracks in my walls and some bulging. A guy i had out to help with some damp floor issues said i had cavity tie failure. He wasnt selling any services and we had a chat. Unfortunately i didnt go into how the ties are removed

Does anyone know about the problem of these ties corroding and so require removal?

I can put in new ties and will grind out the house to repoint it. It will look like new BUT if the ties are left in they will keep expanding in the corrosion process and so damage my new pointing.

Does anyone understand what i am on about ?

 

[trevorbayliss]

This is from here: http://www.diydoctor.org.uk/projects/replacing-a-cavity-wall-tie.htm

One point to note is that by adding remedial wall ties, this will solve any immediate structural issues you may with your property but it won't solve the issues that any corroding ties have caused e.g. cracking and expanding mortar etc.... as if these ties are allowed to remain then the more they breakdown the worse the cracks will become.

In this case you should consult with an expert with the aim of removal.

Good article BUT it wont tell me how to remove the ties.

 

[wrathkeg]

Info on removal options in section 6 of the wall tie manual on this page:

http://www.kingfisheruk.com/downloads.php

 

[trevorbayliss]

Thanks very much for this. The solution is so simple. Big help !

 

[ree]

wrathkeg has provided a good resource. Another similar resource is:

ejcpreservation.co.uk the manual is under Resources.

Both sites are good for most things wall-tie, esp removing the damaged ties.

However, personally i would remove a few bricks at each swollen tie, and using a "Pull out tension tester" or similar, attempt to pull the old ties out. Or at least twist the tie until it snaps, near the inner skin hopefully. I have never actually attempted either method.

Renders, dash or Tyrolean are very difficult to match up.