I have a few questions regarding our converted loft which is currently my bedroom!
Situation: No insulation between rafters at all, this makes the room feel very very cold in winter (drops to around 8ēc in the cold). There is only a small amount of insulation under the floorboards between the joists, it's extremely old and has turned black with dirt/dust. There is a 1.7kw radiator in the room which does heat the room to a comfortable temperature but an awful amount of heat is lost from the roof - snow melts quicker than any other house on the street.
The ideal solution I am told is to remove all insulation between joists, removed plasterboard which is covering the rafters and insulate using Kingspan or Celotex boards and then fix the boards back on.
However this will cause a lot of upheaval to the room which is not desirable.
I am thinking of a good compromise that could be made. In loft space there are storage compartments which can be accessed from doors in the loft like this:
The storage space looks like this inside:
Walls of the room (view from storage area)
In this picture here you can see:
The arrow points to a gap which can be accessed from all the storage areas.
Would it be possible to slide some insulation board up these gaps to at least stop the heat loss from the main heated part of the loft?
Would there be problems with damp?
I hope you can visualise what I am talking about.