Timber frame house, insulation.

[nysensi]

I have a 1960's built house, timber framed to the front and back on the first floor. There is no insulation in the timber frame section at all, plasterboard on the insider, 4" timbers, a roofing felt barrier and the timber cladding on the outside.

I intend to remove the cladding and felt, and then fit a 100mm solid insulation board between all timber frames, replace the felt with a vapour barrier over the outside and then put the timber cladding back.

Is this the right way to go?, will i have thermal bridging or condensation problems, and will it be ok to put the vapour barrier on the outer side of the insulation, as it will mean disturbing all the plasterboard to put in on the inside.

Any advice greatfully received.

 

[stuart45]

Is this the right way to go?, will i have condensation problems

Any advice greatfully received.

yes
Vapour barrier on the warm side of insulation.

 

[nysensi]

That makes sense, I guess I will have to cut the vapour barrier to fit between the timber frames, I was trying to cheet with the idea of laying it on the coldside of the insulation. As I dont want to take off all the plasterboard on the inside.