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Is that saying,that by not insulating your cavity walls,it can then be used to airiate the room through the cavity and poor insulation. This would suggest that we are relying on walls not to be very well insulated if you have no air brick.My gas fire is set into the wall and the chimney used as...

Hi, I have just had a quote for cavity wall insulation.They said that I would need an air brick fitted in one room,because of the gas fire in there. When the fire was fitted we blocked up the old vent as the regulations at the time meant we didnt need one, ie:the kw of the fire. Is it required...