I have just bought an old house with solid brick walls which has been suffering from lack of ventilation (mould on walls). Having stripped the walls I am going to fix battens to the wall, use counterbattens to form an air gap and then use a Kingspan K18 Insulated plasterboard panel to finish off,
I need to ventilate the cavity between the insulation and wall to allow it to breath but I am not sure if I can ventilate into the room by using vents in the plasterboard.. Does anyone know if venting into the room is possible so that the warm air dries the cavity or will this cause more condensation? Does this mean I have to vent to outside (tricky since the walls are 327mm wide?)
the only way to ventilate the entire wall,is to create a stud wall leaving a clear gap so air can circulate. Fitting airbricks would dry out moisture trapped in the gap. With a solid exterior wall, lack of ventilation is not usually the cause of dampness, its usually caused by rain hitting the wall and damp creeping through
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