H
Henno
Guest
House is a always cold - and even With the CH on - there are differences in temperature within each room. One room was registering 20 degrees C at waist level and at floor level it was registering 13 Degrees C. There are draughts coming in at the top of skirting boards on the ground floor (solid concrete floor) and also the upstairs skirting boards ( suspended timber floor). Also draughts from behind wall light fittings (upstairs).
Construction details: house constructed in the 1990's. Terraced. Front has cavity wall (not filled). Rear is cavity block externally rendered. Internal walls front and rear are clad in insulated backed plasterboard.
Have tracked down what I believe the problem to be. There are wall Air Vents located in each room. I removed the interior plastic wall grill - which revealed that there is no conduit between the exterior grill and the interior grill. Also there is a gap between the internal side of the external wall and the plasterboard. So essentially air is coming in through the vent from the outside and flowing In-between the interior side of the external wall and the plasterboard. - and then out the skirting boards and wall light fittings. Also the internal hole for the vent is a circular punched hole in the plasterboard - which you can just about get your hand in to.
My question is - what is the correct procedure (compliant with building regulations) to address the gap between the internal face of the exterior wall and the insulated backed plasterboard. Is it permissible to simply fill this gap with expanding foam - or will this cause other issues?
Also should the internal hole in the plasterboard for the vent - be of a certain min. diameter ?
Construction details: house constructed in the 1990's. Terraced. Front has cavity wall (not filled). Rear is cavity block externally rendered. Internal walls front and rear are clad in insulated backed plasterboard.
Have tracked down what I believe the problem to be. There are wall Air Vents located in each room. I removed the interior plastic wall grill - which revealed that there is no conduit between the exterior grill and the interior grill. Also there is a gap between the internal side of the external wall and the plasterboard. So essentially air is coming in through the vent from the outside and flowing In-between the interior side of the external wall and the plasterboard. - and then out the skirting boards and wall light fittings. Also the internal hole for the vent is a circular punched hole in the plasterboard - which you can just about get your hand in to.
My question is - what is the correct procedure (compliant with building regulations) to address the gap between the internal face of the exterior wall and the insulated backed plasterboard. Is it permissible to simply fill this gap with expanding foam - or will this cause other issues?
Also should the internal hole in the plasterboard for the vent - be of a certain min. diameter ?
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