ROOM AIR VENT (REQUIREMENTS)

[norbellini]

a good few years ago the engineer that fitted my back boiler put in a air vent that is positoned to the back and one side of my chimney breast on the floor it just has 6 large holes drilled in the floorboards and a plastic air vent over the top. i want to change my carpet and was wondering if this arrangement is ok or if some other safety vent is required
thanks

 

[twgas]

although venting through suspended floor is technically suitable, providing there are enough, and big enough holes, we always advise to have a wall vent fitted as this is checkable for blockages/size/route etc. Even if the grilles were ok we would class the installation as not to current standards.

 

[cozzmic]

What make and output of boilet would help and the six holes is more than likely insufficient. The hole should be full open with a suitable grill fitted over the top. If it is a baxi 552 BBU and front usually 19" sQuare free air space is sufficient, can't remember what that is in toy money but a lot of mm square.

 

[namsag]

Floor vents are not recommended anymore because of the possibility of Radon gas entering the property. also as said 6 holes will prob not be sufficient

 

[cozzmic]

Sorry we don't have the radon problem up here.

 

[namsag]

Thought you had a fair bit off granite in that area?

 

[ChrisR]

Radon's only a problem in the far SW I think.
You'll probably need one of these:

It's about 10" by 4"

 

[PlanetThanet]

Hi...radon found in varying concentrations thoughout England and Wales...as the OP says, not an issue in his neck of the woods...this link has info for England and Wales... http://www.hpa.org.uk/radiation/publications/hpa_rpd_reports/2007/hpa_rpd_033_placenames.pdf

Thanet

 

[ollski]

But mainly floor vents are not a good idea because it is virually impossible to check the ventilation air path.