hi can anyone help me out.. my house has a problem with black marks on the wall off condensation... i've had double glazing fitted and the loft insulation /wall done and not as bad as it was but its still there in places
i.ve noticed my house has no air bricks in would this solve the problem?
if so how many per wall and where do you put them.( bottom of the wall and the upper part for the upstairs???)
thanks
i.ve noticed my house has no air bricks in would this solve the problem?
if so how many per wall and where do you put them.( bottom of the wall and the upper part for the upstairs???)
thanks