Insulating loft in dormer house

joeyvicks

hi folks,

Live in a dormer house... in the bedroom which is becoming the nursery there is a little door which leads to a smallish attic space which has a little boarded out area then the rest is over the kitchen where the previous owner extended.
My thought at first is that sometimes the nursery can get a little cold due to the door so thought about insulating between and above the rafters but then thought is this actually just going to keep the kitchen warmer and make the nursery even colder?
Sorry my explanation is a bit long but dont really know how to explain... if this isnt clear let me know

macman

Not clear quite what you mean in terms of the room layout. Heat rises, so if you insulate the roof or the walls of the nursery it would retain more heat.
If you insulate between the nursery and the kitchen below, then the kitchen will retain more heat and the nursery will be colder.

latecomer

Make sure the door to the loft space is well sealed and insulated. As macman says, insulating around the bedroom will help it retain heat.

Hermanmunster_2

Any insulation above the dormer will help but it is the sloping sides twixt the plasterboard and roof felt void ( interrupted by roof joists) that also needs insulating and often this is difficult to do on a dormer .Sometimes the foam method applied through holes is the best way or from the top in the small attic.

andy208833

I have exactly the same problem. i live in a dormer bungalow and the two upstairs bedrooms are freezing in winter and boiling in summer due to the previous owner extending into the loft but not insulating either the voids or the gap between the ceiling and joist. unfortunately the only way i can see is to take down the walls and ceiling, properly insulate then plasterboard over it. This should then reflect the heat/cold from the roof tiles and keep the heat from the radiator and downstairs convection in.
Have priced up and i reckon can be done for approx £1000 if i do most of the work myself. Am going to use a space blanket type material (as used diy sos) which just requires stapling in place and should make the job a lot quicker.

Without bodging the job its the only way i can see to do properly and sort once and for all?

MX5huggy

But does multi foil work? 3.5 years and nearly 800 posts later they still aint sure

http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=125&page=27

sunshinett

going to have a loft extension built with 2 big dormers what is the best insulation to use, to make sure the builders put this in? the loft is just a loft space now, no boards down, so do you insulate into the floor also? or do you allow downstairs heat to come up through the floor into the loft space? unsure how much insulation and what is a good idea?

if you insulate the floor of the loft then keep heat downstairs which is hard to heat as 1930's solid walled house, but also want the loft space to be warm with the new extension which will have two bedrooms and a bathroom up there. thanks for any help