Air Brick questions

[themugger]

Hi There, i have 2 air bricks below my floor level where i am building my new extension. my question is considering i have several other air bricks in the house, do i need to extend these 2 air bricks through the concrete floor and out the new wall?

If i do, all i was planning on doing was placing a 4 inch hsoil pipe over the air brick to a new air brick on the new external wall? does that sound right or do i need to get any special kit to do the venting?

Thanks in advance.

 

[gregers]

thats what i would co,make sure you seal the pipes to the back of the airbricks as best you can then run it under the concrete to sub floor.

 

[Deluks]

Went down a similar path recently and was pointed towards this thread:

//www.diynot.com/forums/viewtopic.php?t=171482

The pipe to square converters are available from Allmat on the Godstone Road (go down to Purley Tesco's, past the station, under the bridge and towards Whyteleafe)

Thanks again to oldun for that tip.

 

[themugger]

Thanks for the tip, i know them and will pop along and grab a few.

Do you think i can get away with just extending one brick, the controller has already been round and didnt say anything but i dont want this to come back to haunt me....

Thanks

 

[freddiemercurystwin]

Both would be better, you can't have too much ventilation!