Cost of bead cavity wall insulation

densol_2

I had a cavity wall survey done today. I have thermal blocks with a cavity and the brick outside. Solidly built but it is cold in the winter as its a big detached house. Also as built in 2001 - it doesn't qualify for free CWI which I did know. The price for normal CWI would be £990 BUT the surveyor said and showed me photos he took of the inside of the walls which show lots of rubble and excess cement - which would snag the CWI and mean areas would not fill. They said bead would be better as it would flow past the cement better but they don't do bead themselves - so had to decline the job.

Anyone know the relative costs of bead v standard so I can get an idea before I contact bead installers ?

maninthestreet

If it was built in 2001, it will already have CWI installed, won't it?

densol_2

No ! And that's why I can't get it free off the Government - they say it should have - but builder used thermal blocks instead. I've been on a merry go round trying to sort it out and decided to bite the bullet and just pay for it

Furts

densol wrote: »

No ! And that's why I can't get it free off the Government - they say it should have - but builder used thermal blocks instead. I've been on a merry go round trying to sort it out and decided to bite the bullet and just pay for it

You have thermal insulated walls which should have met the requirements at that time. Also builders like Barratt used a wafer thin bubble wrap layer which resulted in a clear cavity. You would be prudent to reflect on this before installing CWI.

You should also consider your position with regard to CWI. You have received unequivocal evidence that your walls are defective. You should be repairing these before any CWI is installed. You may choose not to, but your CIGA guarantee is at stake.

No installer should be touching your walls as they are, which may be the real reason why your surveyor walked away.