Idea's on slow draining sink.

plumbing, drainage and waste water questions here please

Moderator: Moderators

Post Reply
Rorschach
Senior Member
Posts: 3720
Joined: Wed Feb 26, 2014 9:35 pm
Has thanked: 46 times
Been thanked: 754 times

Idea's on slow draining sink.

Post by Rorschach » Fri May 11, 2018 9:08 am

Upstairs bathroom sink drains very slowly. Nothing blocking the plug hole, being a bathroom it does get biofilm buildup around the drain but I clean this regularly, looking down into the trap now it is spotless white pipe.
Plunging seems to make a difference but only for a few days and then it slows again.

Any ideas before I start stripping out the waste pipe?
User avatar
big-all
Pro Carpenter
Posts: 21180
Joined: Sat Dec 16, 2006 10:11 pm
Location: redhill surrey an auld reekie laddie
Has thanked: 636 times
Been thanked: 1897 times

Re: Idea's on slow draining sink.

Post by big-all » Fri May 11, 2018 9:26 am

do you have people using the sink with long hair ??
we are all ------------------still learning
User avatar
kellys_eye
Senior Member
Posts: 10338
Joined: Mon Mar 15, 2010 11:49 pm
Location: Oban
Has thanked: 290 times
Been thanked: 1559 times

Re: Idea's on slow draining sink.

Post by kellys_eye » Fri May 11, 2018 9:44 am

Greasy gunge - usually non-dissolved soapy products. I'm guessing your trap isn't the standard u-bend but one of those 'compact' straight versions???

I use the palm of my hand to give it a 'plunge' every couple of days and it tends to keep it clear.
sent from my laptop using my fingers - because we REALLY need to know where it's come from.....
Rorschach
Senior Member
Posts: 3720
Joined: Wed Feb 26, 2014 9:35 pm
Has thanked: 46 times
Been thanked: 754 times

Re: Idea's on slow draining sink.

Post by Rorschach » Fri May 11, 2018 10:30 am

big-all wrote:do you have people using the sink with long hair ??
Not particularly long. A strainer is used to trap hair. Some does make it to the gully but I clear that often too.
kellys_eye wrote:Greasy gunge - usually non-dissolved soapy products. I'm guessing your trap isn't the standard u-bend but one of those 'compact' straight versions???

I use the palm of my hand to give it a 'plunge' every couple of days and it tends to keep it clear.
No it's a standard U bend and it's perfectly clean at the trap end. I guess the problem must be further down the line.
User avatar
wine~o
Senior Member
Posts: 24690
Joined: Sat Jan 10, 2009 3:49 pm
Location: hants/dorset border
Has thanked: 1325 times
Been thanked: 3632 times

Re: Idea's on slow draining sink.

Post by wine~o » Fri May 11, 2018 1:03 pm

You could try caustic soda, careful though as it needs handling with caution.

(do not confuse caustic soda with soda flakes)
Verwood Handyman

Verwood Handyman


___________________________________________________________________

If you feel you have benefited from the Free advice given on the Forum, Please consider making a donation to UHM's Nominated charity, read all about it and donate here :

http://www.donnasdreamhouse.co.uk
Rorschach
Senior Member
Posts: 3720
Joined: Wed Feb 26, 2014 9:35 pm
Has thanked: 46 times
Been thanked: 754 times

Re: Idea's on slow draining sink.

Post by Rorschach » Fri May 11, 2018 1:17 pm

I have plenty of caustic soda on hand, will give that a try.
User avatar
someone-else
Senior Member
Posts: 8874
Joined: Sat Sep 01, 2012 6:03 pm
Has thanked: 32 times
Been thanked: 1497 times

Re: Idea's on slow draining sink.

Post by someone-else » Fri May 11, 2018 9:56 pm

Its a bit late now, but DO READ THE INSTRUCTIONS.

You mix it in a bucket of HOT water then pour it down said plug hole. If you pour it in cold, it can set like concrete. (No, it wasn't me, but I lent him a drill to drill holes through it, and it worked)
Fret not, a forum is a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link to find out more.

Working on anything electrical? have you got a multi meter? why not? Would you hit a nail with a shoe?

If gloom had a voice, it would be me. :mrgreen:

:idea1: How to post a picture on this forum Click here
Rorschach
Senior Member
Posts: 3720
Joined: Wed Feb 26, 2014 9:35 pm
Has thanked: 46 times
Been thanked: 754 times

Re: Idea's on slow draining sink.

Post by Rorschach » Sat May 12, 2018 6:00 am

NOOOO you never add caustic soda to HOT water! ::b ::b
User avatar
Razor
Senior Member
Posts: 7514
Joined: Wed Nov 14, 2007 10:21 pm
Location: Northampton
Has thanked: 284 times
Been thanked: 878 times

Re: Idea's on slow draining sink.

Post by Razor » Sat May 12, 2018 6:24 am

Rorschach wrote:NOOOO you never add caustic soda to HOT water! ::b ::b
You can add it slowly to hot water but you can't add hot water to caustic soda.

Used tons of it on 2 stroke exhaust when I was a lad
As always help on here is free, however if you think you have saved a decent sum of money why not click the link to find out about the charity we're currently supporting? A couple of quid makes a real difference.

donnas-dream-house-charity-t52110.html
Post Reply

Return to “Plumbing Forum”