I have just constructed a new roof on my semidetached to incorporate a new extension. I have felted it, battoned it and started tiling the.
My question is, using breathable membranes, is there any ventilation required, eg at the ridge or hips and in the soffit boards?
thanks
james
My question is, using breathable membranes, is there any ventilation required, eg at the ridge or hips and in the soffit boards?
thanks
james