Soil stack leak

[JimCrow]

Yes it is 40mm

How would you clean the existing boss adapter up? Soap/ water and Toothbrush?

Or should I just replace the boss adapter with a new one. If so, do you simple pull the existing adapter out?

For the blanking plug, is this an ideal product?

https://www.screwfix.com/p/mcalpine...55281954514&ds_rl=1249404&gclsrc=ds&gclsrc=ds

What you have in your link is wrongly worded, it is a blanking "CAP" for capping off a pipe, what you want is a blanking "PLUG",
this will push straight into the boss pipe, no need for any other pipe or fittings.

https://www.toolstation.com/solvent...kJWVH9CZqUpK5i3jg14aAmfIEALw_wcB&gclsrc=aw.ds

 

[Mr Sparkle]

What you have in your link is wrongly worded, it is a blanking "CAP" for capping off a pipe, what you want is a blanking "PLUG",
this will push straight into the boss pipe, no need for any other pipe or fittings.

https://www.toolstation.com/solvent...kJWVH9CZqUpK5i3jg14aAmfIEALw_wcB&gclsrc=aw.ds

View attachment 255201

So I don't need any solvent weld?

Just clean the boss adapter, then push the access plug into the boss adapter and job done?

 

[JimCrow]

So I don't need any solvent weld?

Just clean the boss adapter, then push the access plug into the boss adapter and job done?

That's it...

 

[lostinthelight]

Out of interest why would one use the boss plug linked to and not the type like :

https://www.screwfix.com/p/floplast...foUTCkJ0wV9dAx-f28kaApDlEALw_wcB&gclsrc=aw.ds

 

[Madrab]

You may find that those access plugs may be a little too small to fit into the push fit sockets tightly, especially if the seals are worn. No reason not to try though.

 

[dilalio]

"Sometimes" it is possible to cut the end off the pushfit boss and solvent weld a 2" coupler over it with a plug glued into other side of coupler.

 

[Mr Sparkle]

You may find that those access plugs may be a little too small to fit into the push fit sockets tightly, especially if the seals are worn. No reason not to try though.

With my luck, the access plug will probably wind up being small

Got the part, will see how I get on

Is it a good idea to smodge a bit of silicone on the access plug?

 

[Madrab]

If it's too loose then no, I wouldn't. If that's the case then a 43mm solvent weld pipe will probably be a better fit, then it's just back to a piece of pipe and straight coupler and the plug and put a little silicone on the pipe if it's loose just to provide a seal once it sets.

No harm on giving it a try on it's own 1st though.

 

[Mr Sparkle]

The plug went onto the boss adapter with a nice tight fit. The leak is sorted

Thanks guys, the help was amazing!

 

[HERTS P&D]

Can't beat a nice tight fit!

Andy

 

[Mr Sparkle]

I spoke too soon

I just noticed that I have a small weeping drip now

It looks like it's coming in the area between the plug and the boss adapter

What is the best action to take now?

Silicone around the plug and push in again?

 

[Madrab]

Yup .... did you squeaky clean and dry the seal and internal area of the boss??

Use a little silicone adhesive on the fitting, like Wet Grab/Strong Stuff or similar, not a normal sanitary silicone and give it a twist or 2 when fitting

The adhesive will grab in wet conditions and then set permanently like a firm rubber, a normal silicone won't seal if it's at all damp (like behind the seal).

 

[Mr Sparkle]

Thanks @Madrab

Yes, I gave it a good cleaning with Bleach, fairy and cream cleaner.

I then thoroughly dried the area before putting the fitting on

I will purchase some CT1
https://www.toolstation.com/ct1-sealant-adhesive/p85802

Do I apply the CT1 around area 1, area 2 or both?

 

[Madrab]

Yup, CT1 will do the job fine, just a light coating on 1 will do, as you fit it, twisting as you go, it will coat the seal and boss and will push the excess adhesive out and up against 2. Just wipe round with a cloth to clean it up once it's all the way in, might want to use rubber gloves as it can be a mare to get off the skin.

 

[Madrab]

Leave it cure for at least an hour before you run water through the stack if you can