I want to improve the air tightness in an existing dormer which is on an exposed site. Basically the wind is blowing into the soffits and getting into the attic area which in turn is getting into the upstairs dormer area, under the skirting. The place gets really draughty when its windy.
A few questions. Can a membrane eg: (Siga) be fitted to the cold side of the studding upstairs and sealed back to the wall plate so that the draughts wont get into the building envelope? Is the any condensation risks with this? I will more than lightly fit rigid kingspan in between studs behind this membrane?
Any help appreciated.
A few questions. Can a membrane eg: (Siga) be fitted to the cold side of the studding upstairs and sealed back to the wall plate so that the draughts wont get into the building envelope? Is the any condensation risks with this? I will more than lightly fit rigid kingspan in between studs behind this membrane?
Any help appreciated.