Waste pipe through external wall

17 Apr 2007
Reaction score
United Kingdom
I have my new kitchen sink waste to install.
With solvent joints, is there any problem with pushing the 90° bend into the wall to get the pipe drop to the drain closer into the wall?
I intend to use expanding foam to seal around the pipe.
Sponsored Links
Use a pipe snug around the pipe in the external wall and the 90 will be a tight fit into it
The bend on the inside is a compression type. The pipe snug will not be fitted yet. I'll leave it for a week to test for leaks although the solvent bend on to the pipe certainly seemed solid before I installed the pipe into the wall.
Sponsored Links
This is the pipe run. I going to add a couple of 135° bends at the bottom to set the outlet is square into the drain and the pipe run closer to the wall.
The other pipe is now redundant. It was for the washing machine drain but that now drains out with the sink.


DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local