Retrofitting insulation to sloping roof on dormer window
Information, help, tips and advice on cavity walls, ceilings and lofts etc....

2 posts   •   Page 1 of 1
mizunooto
Labourer
Labourer
Posts: 1
Joined: Sat Aug 23, 2014 9:27 am

Retrofitting insulation to sloping roof on dormer window

by mizunooto » Sat Aug 23, 2014 9:44 am

I'm working my way through my dormer bungalow which was built without a shred of insulation in the 1960s. My biggest problem is the area of sloping roof/ceiling on either side of the dormer windows, i.e. from the (small and cramped) loft space down to the eaves above the ground floor. The property was re-roofed about 10-15 years ago (nobody thought to fit insulation!) So I have a number of "slots" to fill, each about 4 x 20 x 72 inches, and not sure the best method to use. I could try pushing celotex into the slots though it would have to be cut small to ensure I could push it all the way down. I thought of pouring chunky polystyrene loose-fill down the slots - it couldn't escape at the bottom and would still allow some air circulation - would this be sensible or not? Any ideas would be welcome.

welsh brickie
Project Manager
Project Manager
Posts: 2610
Joined: Sat Apr 12, 2008 8:54 am

Re: Retrofitting insulation to sloping roof on dormer window

by welsh brickie » Sat Aug 23, 2014 2:28 pm

its best to remove the plasterboard and insulate properly, doing it the way your suggesting wont work, use kingspan or celotex hardboard insulation

2 posts   •   Page 1 of 1
It is currently Sun Dec 22, 2024 8:49 pm