I have just had a back boiler removed which has left a hole in the wall. Tere is a 9" brick chimney present which stll has the aluminium flue lining going up it. The question is can I just plasterboard over it to cover it up or do I need to a) remove the aluminium liner, b) brick it up prior to plasterboarding. Any ideas comments would be gratefully recieved
blocking up fireplace
- Thread starter grayster
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I covered 4 fireplaces up in my home when i bought it (none were in use) and i never put any ventilation in place and i have no problems and that was 10 years ago.
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Actually John, that's not quite right.
The purpose of leaving a vent in the flue is to do precisely that, i.e. ventilate it.
The Vapour pressure in the house will force moist(er) air through the fabric of the walls and into the flue void, where it will cool and condense. This in turn can result in shady patches on the chimneybreast itself.
Another reason to make a vent is so that 'passive stack ventilation' within the room occurs via the flue. This ventilates the room and helps to offset the results of double-glazing (amongst other things).
Blocked flues are a major contributor to condensation and a vent should always be left: 225 x 150 will do, covered with a suitable grille.
Of course, it will also help dry out any rainwater, but this is better dealt with by a cowl in the first place.
HTH
Patrick
www.pdoyle.net
The purpose of leaving a vent in the flue is to do precisely that, i.e. ventilate it.
The Vapour pressure in the house will force moist(er) air through the fabric of the walls and into the flue void, where it will cool and condense. This in turn can result in shady patches on the chimneybreast itself.
Another reason to make a vent is so that 'passive stack ventilation' within the room occurs via the flue. This ventilates the room and helps to offset the results of double-glazing (amongst other things).
Blocked flues are a major contributor to condensation and a vent should always be left: 225 x 150 will do, covered with a suitable grille.
Of course, it will also help dry out any rainwater, but this is better dealt with by a cowl in the first place.
HTH
Patrick
www.pdoyle.net
TO BE SAFE YOU MAY BETTER TO SPEAK TO SOME ONE THAT IS CORGI WORK THEY ARE TRAINED IN THAT TRADE
macker said:
Just out of interest/future reference, what if there are other fires in the flu line, eg you have a gas/real fire downstairs but want to block off upstairs (with plasterboard). Does it matter what kind of plasterboard, is 12.5 mm put on with board adhesive sufficient or is it preferable to use foil backed - can you use adhesive with foil backed?
You may want to read my thread here //www.diynot.com/forums/viewtopic.php?t=48311
This may explain the problems I'm having now!
This may explain the problems I'm having now!
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