Square Bay Window cavity wall insulation

29 Feb 2008
Reaction score
United Kingdom
Hi all.
Had cavity wall insulation done a few months back. However, in the process of renovating a bay window internal cill I have noticed that they didn't fill that cavity... The wife now remembers them saying something about they said the cavity was too small to do... It's about 30mm on the two sides and 50mm across the front... So I presume they tested a side panel and decided all were the same.
I have some polystyrene beads left over from a bean bag project, should I fill the cavity with the remaining beads, whilst I have access, or can you buy loose fill mineral wool to do the job yourself?

Or is the size of the cavity a consideration for not filling, I presumed it was the applicator nozle that couldn't cope?

thanks for your comments..
Sponsored Links
Are been bag beads the same as used in cavity fill?

How much trouble is this for the 50p a year you will save from this small area?

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links