Gable end wall thermal bridging - insulate?

stator

In a normal pitched roof house with concrete cavity walls (isulated) where the attic floor is insulated the gable end walls in the attic provide a very large cold bridge to the internal walls of the house, causing heat loss.

Has anyone tried to stop this heat loss in an old house and if so, how?

Would insulating the gable wall with solid insulation (PIR?) inside the loft help prevent some of the heat loss?
Or is it a futile effort since the wall is attached to the roof and tied to the external facing wall anyway?

Thoughts?



ps I know internal insulation in the rooms would be more effective but that would be expensive and I couldn't DIY it

Furts

First many homes have aircrete blocks so this will minimise the cold bridging. These blocks have been around for certainly 45 years so this will apply to many houses.

Second, the roof insulation will be fibreglass/rockwool and should be turned up the the wall.

Third the first ceiling timber will be a distance from the wall and it is this awkward gap which is typically not insulated. With trussed rafter roofs typically 38mm. So use expanding foam here.

Fourth the cold bridge can be alleviated by fitting coving, which in my home has also been drilled and filled with expanding foam. This not only adds insulation but also prevents air currents and heat leakage.

There are bound to be other ideas - these come to mind as I type!