Hi,
My kitchen sink is slow to drain, and when the washing machine empties it starts to fill up the sink. I have replaced the trap underneath the sink, and tried some basic drain cleaner and all of that made no difference. It also makes a fair bit of gurgling noise when it has finally finished draining.
The bathroom toilet and sink and bath all drain no problems.
Looking outside, the toilet waste seems to feed into the main drain pipe which is vented at the top of the roof. The bathroom sink and bath seem to feed into the down gutter pipe. All the houses in my row are set up like this.
The kitchen sink waste pipe, after passing through the trap, heads horizontal for a bit (30cm), then bends straight down into the floor. Just after the bend, an old waste stand pipe from the old washing machine joins (my washing machine just joins under the sink above the trap). This old waste stand pipe is currently capped off, but if you remove the cap the sink drains twice as quickly, but you still get a bit of gurgling noise.
Anyone got any ideas as to what’s wrong?
Should the kitchen sink be connected to a vent pipe (see a lot of comments about this on US sites)? So should I fit an air admittance valve or something? Can that be fitted under the kitchen sink or does it need to go outside
Why does taking the cap off the old waste pipe speed things up? Is this providing air when the cap is taken off?
Is there just a blockage in the drain? If the toilet and bathroom drain fine then is it unlikely to be something in the main drain?
My kitchen sink is slow to drain, and when the washing machine empties it starts to fill up the sink. I have replaced the trap underneath the sink, and tried some basic drain cleaner and all of that made no difference. It also makes a fair bit of gurgling noise when it has finally finished draining.
The bathroom toilet and sink and bath all drain no problems.
Looking outside, the toilet waste seems to feed into the main drain pipe which is vented at the top of the roof. The bathroom sink and bath seem to feed into the down gutter pipe. All the houses in my row are set up like this.
The kitchen sink waste pipe, after passing through the trap, heads horizontal for a bit (30cm), then bends straight down into the floor. Just after the bend, an old waste stand pipe from the old washing machine joins (my washing machine just joins under the sink above the trap). This old waste stand pipe is currently capped off, but if you remove the cap the sink drains twice as quickly, but you still get a bit of gurgling noise.
Anyone got any ideas as to what’s wrong?
Should the kitchen sink be connected to a vent pipe (see a lot of comments about this on US sites)? So should I fit an air admittance valve or something? Can that be fitted under the kitchen sink or does it need to go outside
Why does taking the cap off the old waste pipe speed things up? Is this providing air when the cap is taken off?
Is there just a blockage in the drain? If the toilet and bathroom drain fine then is it unlikely to be something in the main drain?