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 Post subject: Underfloor ventilation?
PostPosted: Thu Sep 14, 2017 3:26 pm 
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Hi
I found a draft under my kitchen units which has turned out to be coming from a double airbrick half of which is above floor level. There is nothing running through the wall after the airbrick. I suspect this is an airbrick for underfloor ventilation however what should be going through the wall and diverting this underfloor (if I'm correct in thinking this is for underfloor vent) as I can find materials for single brick ventilation but not double I have also whilst checking another double air brick that is underfloor has nothing going through the wall. any advice to reduce a drafty house is greatly appreciated Thanks


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PostPosted: Thu Sep 14, 2017 5:16 pm 
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is the kitchen walls solid or cavity?what about the house?
is the floor suspended or solid?photos of inside an outside always useful. can you shine a light throuh the airbricks or poke a stick all the way through.


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PostPosted: Thu Sep 14, 2017 5:41 pm 
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Any gas appliances in the vicinity?

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PostPosted: Thu Sep 14, 2017 10:48 pm 
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they are cavity walls. This Airbrick is on the side of the house there is also 1 directly above it at ceiling height. there are a further 2 front and back underfloor level, the floor is suspended. I can actually touch airbrick from inside. there is no gas supplies in Kitchen. pictures to follow once I work out how to add them


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PostPosted: Mon Sep 18, 2017 11:34 am 
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Having problems attaching pictures can anybody help please?


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PostPosted: Mon Sep 18, 2017 1:19 pm 
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The usual problem is that the pics are too large. Reduce them to under 1200 pixels on the longest side.

how-to-post-photo-s-t9415.html

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PostPosted: Mon Sep 18, 2017 7:58 pm 
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Pictures isn't the best but gives a rough idea of what I have


Attachments:
File comment: airbrick from outside
20170914_173139.jpg
20170914_173139.jpg [ 161.42 KiB | Viewed 585 times ]
File comment: Light coming in from out side
20170914_173239.jpg
20170914_173239.jpg [ 30.75 KiB | Viewed 585 times ]
File comment: what I can see under my cupboard
20170914_173048.jpg
20170914_173048.jpg [ 37.21 KiB | Viewed 585 times ]
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PostPosted: Mon Sep 18, 2017 10:59 pm 
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the photos dont make much sense. i now what an airbrick looks like but wheres the grounnd level, above or below the inside floor level?
low level air bricks usuly ventilate the sub area below the suspended floor.you need cross ventilatn.you dont need one behind the units.
kitchens are usuly vented with ahigh airbrick or better an extractor.


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PostPosted: Mon Sep 18, 2017 11:14 pm 
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Half the air brick is above floor level whilst the other 4 that are to front and rear of the house are below floor level


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PostPosted: Mon Sep 18, 2017 11:32 pm 
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you need cross ventilation in the kit so you need 2 or 4 air bricks around the kit.sack the halfway brick and set the kit a/bricks below the finished floor.



For this message the author wes56 has received gratitude : peteribrooks
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