wall tie

[^woody^]

I don't know, but you could expect a long life - 80- 100 years probably more?

These butterfly ties wont crack the joints as they are too thin. The older solid flat steel "fish tail" ties do the cracking.

I don't recall exactly, but I understood that there was a poor design or manufacture in the "old days" so the problem is limited to properties which used certain design of ties and/or in a certain location.

Nowadays many LA's like stainless steel or BBA approved plastic ties (up to three stories) and wont accept galvanised butterfly ties

 

[Mr M]

without wanting to open a new thread what life should i expect from my wall ties, house was built in 1970 with the coathager style figure of 8. we live in dorset about 1 mile from see and house does see lots of wind, on a hill. i pursume the horizontal cracks would only appear on the outside not the inside? thanks

The horizontal cracking will generally only be visible externally as this is where the damage is caused to the tie ie where the weathering is. I removed some of my ties when I formed a window opening in my gable wall and they were the mild steel, galvanised 'fish tail' type. They were corroded were they were built in to the outer leaf of brick and slightly into the cavity void but were they were built into the inner leaf, they were fine.

If your ties are stainless steel as opposed to msg, then their lifespan would be far greater