Hi
I decided to go for polybead insulation for the cavity walls in my 60's built detached bungalow. The surveyor came round and said all was ok.
When the installers came round I asked them if the open cavity would be a problem. Initially they said that it wouldn't be a problem, since the top row of the fill would be 3 courses down from the top. Anyway they had a look in the loft and suggested that the since the glass fibre was right to the edge of the roof then there would not be a problem.
Now from what I can see from the BBA certificate for the product, the cavity should be capped with mineral fibre, before filling. I suspect that this is to prevent the polybeads forming a fire hazard in the eaves. When I pointed this out they decided not to proceed and to arrange to send out another surveyor to have a look.
I just wondered what common practice should be in this situation?
The other thing that occurred to me was that if the top 3 courses of the outer skin are not filled, add to that the inner skin, which is 5 courses higher, this would mean that the top 2ft (25%) of the wall would not be filled.
This is starting to look like waste of time.
I decided to go for polybead insulation for the cavity walls in my 60's built detached bungalow. The surveyor came round and said all was ok.
When the installers came round I asked them if the open cavity would be a problem. Initially they said that it wouldn't be a problem, since the top row of the fill would be 3 courses down from the top. Anyway they had a look in the loft and suggested that the since the glass fibre was right to the edge of the roof then there would not be a problem.
Now from what I can see from the BBA certificate for the product, the cavity should be capped with mineral fibre, before filling. I suspect that this is to prevent the polybeads forming a fire hazard in the eaves. When I pointed this out they decided not to proceed and to arrange to send out another surveyor to have a look.
I just wondered what common practice should be in this situation?
The other thing that occurred to me was that if the top 3 courses of the outer skin are not filled, add to that the inner skin, which is 5 courses higher, this would mean that the top 2ft (25%) of the wall would not be filled.
This is starting to look like waste of time.