Could anyone advise if air admittance valve could be fitted on outside wall. Thanks

hi rag, yes it can.

dont know if this is what you are after.
http://www.studor.net/news/main.asp

If you mean ouside of the property then no, they need to be inside and higher than the highest flood level in the house, which is normally the upstairs wash basin.

You can't fit them outside incase they freeze in winter!

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DIY | Donnas dream house

this has better spec on it, you need replacement cartridges for it though
http://www.plumbingstore.com/automatic_air_vents.html

sounds like a bit of mither.
whats the situation you are trying to sort?

The whole point of an AAV is to site them inside.

As panlid says what are you trying to solve?

Come on tell us, tell us.

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Jaeger.
Senior Member doesn't mean I'm OLD!

darrenc wrote:

I dont think its a stupid question but does show a lack of understanding of how paint works and reasons for certain applications, now dont jump down my throat Jaegar i'm not being funny its just a classic case in point of a well educated professionally trained painter against a general tradesman.

Take a look at Document H of the Building regulations, it clearly states that Air admittance valve should not be installed outside even if you import one from another country.

http://www.planningportal.gov.uk/englan ... 10382.html

UHM is correct in everything he says, the only thing to add is that they shouldn't be installed at the head or foot of a drain run.

rag, no importing then

from what i have read i cant see any stipulation that you cant import. meaning i take it these regs are regarding present uk vents, as this US product seems like a new thing that may be acceptable here in the future?.

rag, are you trying to remove a soilstack inside a bathroom or something?

Renovated old house and moved bathroom and en suite to other side of building and put in place new stack pipes just needed to know if I had to go up and over fascia and finish above guttering. Though air ad valve would be easier solution. Thanks for help