- Joined
- 27 Sep 2004
- Messages
- 3
- Reaction score
- 0
- Country
I have spent the weekend laying 200mm glass fibre insulation between the joists of my loft. I plan to cross-lay a further 100mm as soon as Homebase have another 10% day! (or maybe not, looking at some other posts)
My house was built in the 1970's and is chalet(ish) style, so that i have no soffits or facias and there is no ventilation gap between the base of the rafters and the house walls.
The roof covering is concrete tiles over felt, the felt originally had a fibreglass backing.
I am concerned about condensation problems in the future,as I have no soffits or facias to put ventilators in, i do have some vertical wall space to add larger ventilators to, would this be sufficient? can these be added from inside? Any makes? I don't want to add ridge ventilators if i can help it
Or am i worrying unnecessarily? is it possible that the felt is in some way 'breathable'?
My house was built in the 1970's and is chalet(ish) style, so that i have no soffits or facias and there is no ventilation gap between the base of the rafters and the house walls.
The roof covering is concrete tiles over felt, the felt originally had a fibreglass backing.
I am concerned about condensation problems in the future,as I have no soffits or facias to put ventilators in, i do have some vertical wall space to add larger ventilators to, would this be sufficient? can these be added from inside? Any makes? I don't want to add ridge ventilators if i can help it
Or am i worrying unnecessarily? is it possible that the felt is in some way 'breathable'?