cracked waste pipe

huwy123 · 20 Mar 2014

hi there,

I have noticed a crack in my kitchen waste pipe.

I guess it needs replacing but not sure how to go about it as its goes underground. Replacing the whole length of pipe is going to be difficult as its about 4m away from the drain I presume it connects to.

I've attached some pics

Can someone advise on the best way to repair.
Also could I tape it up with something like denso tape as a short term fix?

Cheers,
Huw

Untitled

huwy123
20 Mar 2014
1

Untitled

huwy123
20 Mar 2014
1

HERTS P&D · 20 Mar 2014

That pipe needs replacing, start digging.

Andy

huwy123 · 20 Mar 2014

Will the whole length need to be replaced?

Gasguru · 20 Mar 2014

It's all been damaged by sunlight UV leaching out the plasticiser. It should have been painted along with the compression joint that is also vunerable. Time to dig up the slabs...if you're lucky the pipe may be ok under the ground.

huwy123 · 20 Mar 2014

Thanks for replying.

If its ok under the ground can I cut the pipe and join it to a new section of pipe?

Gasguru · 20 Mar 2014

Yes, If its polypropylene you'll need a compression coupling, hopefully it's PVC or ABS and you can solvent weld on a coupling. Whatever the pipe paint it especially that exposed to sunlight. Yes the manufacturers will tell you PVC is fine outside....it's not, given enough years it rots and goes brittle too.

Hugh Jaleak · 20 Mar 2014

I was told (many moons ago) that it is advised to paint external plastic waste/soil/rainwater goods to offer some protection from the sunlight. Once you've replaced that waste then maybe a plan to give it a coat or 2 of gloss paint to protect it.

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cracked waste pipe

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