Insulating a dormer roof

Guys
A friend is interested in buying a dormer but needs to know if the roof can be insulated.

Is there a way of doing it?

MicktheMan

I'm assuming by "insulated" here you mean overall heat loss reduction rather than just conductive heat loss reduction.

A couple of things to consider here;

1. Insulation on its own generally does not address heat loss by air leakage, aka draughts
2. Dormers, due to their structure are notorious for heat loss by air leakage (draughts) unless special attention was paid to this during construction (hens teeth rare)
3. Significant heat loss reduction can be achieved ... but not easily, cheaply and without a solid plan of action based on the result of testing the house for air tightness.

BryanF

There was a thread a few years back, that explored this at length. The general consensus was the best way to deal with dormers is to strip back a few rows of slates/tiles and sort air-tightness and insulation once you can get good access to the wall plate.