Help-how to prevent air coming up through shower drains

cuculainn

With the recent windy weather, I have noticed serious drafts coming up through the shower drains. Has anyone else experienced this?

I can run the shower for a few mins and ths stops it, but it looks like there is no trap to hold water to stop air blowing in.

Its pretty annoying as we have a pretty good airtightness spec on the house and this bothers me!

Any suggestions welcome:D

Victor

Is there a vent fitted at the end of the drainage run?

cuculainn

Hey Victor,

The downstairs showers run to outside and turn down into a drain in footpath.
The upstairs drains turn down on the outside into a larger drain with a funnel type opening on the top.

Probably havent expained this well but maybe can post pics later to help expain

bakerbhoy

It is almost certain there is no trap installed . You need to fit one to the drain but freezing may be an issue . A dry inline may be a solution . It uses a diaphram rather than a p or s bend but is only 1 1/2 times the diameter of connecting pipe and since its dry it should not ice up and will look neat.100_2891.JPG

cuculainn

bakerbhoy wrote: »

It is almost certain there is no trap installed . You need to fit one to the drain but freezing may be an issue . A dry inline may be a solution . It uses a diaphram rather than a p or s bend but is only 1 1/2 times the diameter of connecting pipe and since its dry it should not ice up and will look neat.100_2891.JPG

Thanks for that. Not really sure where that would be connected in. I should clarify that the house is finished so I can only really do something on the outside.

bakerbhoy

That why this unit might do , it is not affected by freezing conditions

cuculainn

ok, so would i just hook that on to the end of the drain where it empties into the drain in the path?

Would i pick these up in any hardware store?

Thanks for your help and sorry for all the questions

bakerbhoy

Any plumbing suppliers and they should be able to give proper advice to your situation