This article provoked a bit of extra comment from some of my surveying colleagues, including one or two in the cavity wall tie
It was a press release from a cavity wall tie
installer down in Yorkshire.
These other causes include thermal and moisture expansion, lintel failure, roof spread, cavity wall tie
failure and so on.
Take the first dramatic case of cavity wall tie
One is the effect of the soil expanding rather than shrinking and the other is the result of cavity wall tie
Dampness, dry rot, subsidence, cavity wall tie
By older I mean 50 years plus and in particular, the 60 years plus properties that are prone to cavity wall tie
Flood waters penetrating properties can cause serious damage to the building substrate, the cavity wall ties
and internal finishes.
My only solution outwith removing the cavity insulation is to install some Passyfier Sleeved Wall Vent kits however as it's damp patches the cavity wall ties
are probably being bridges.
Cavity wall insulation can also cause dampness, especially around cavity wall ties
It sounds like dampness A and the blistering is probably where the cavity wall ties
lie within the cavity.
But cavity wall ties
can - and do - fail, for a variety of reasons.