Hi all. My house was built in 1999. Whilst core drilling for an extractor I noticed that the cavity only has 25mm of polystyrene as insulation. Is this sufficient or can it be 'topped up' with blown in insulation? thanks.
Cavity wall insulation
- Thread starter elevonic
- Start date
Sponsored Links
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
