We have condensation build up on the windows in the bedroom. There are no trickle vents to open and I'd rather not leave the window open all year round.
Is it a good idea to drill holes above the lintel and put a vent from the bedroom into the soffit? Will that do "bad" things to the effect of the cavity insulation?
Is it a good idea to drill holes above the lintel and put a vent from the bedroom into the soffit? Will that do "bad" things to the effect of the cavity insulation?