I'm about to insulate my roof space in the back half of a top floor flat and am worried about subsequent condensation. There are no vents in the roof and it is not possible to access it from the outside. It is a half roof with a party wall on one side and a gable end. The other end butts up against the main body of the house with a solid brick wall.
Can I put some kind of vent into the gable end? Doesn't this mean I would need another vent somewhere else in the roof?
Would some kind of 'vapour permeable underlay' beneath the insulation help, or lining the loft floor with building paper?
Thankyou for any advice you might offer.
Can I put some kind of vent into the gable end? Doesn't this mean I would need another vent somewhere else in the roof?
Would some kind of 'vapour permeable underlay' beneath the insulation help, or lining the loft floor with building paper?
Thankyou for any advice you might offer.
