soil stack failing test

[macandrc]

We are currently having problems with the soil pipes on a convertion we are undertaking. Our soil pipes are failing their pressure test, they were ok prior to laying the concrete floor but someone must have disturbed one of the pipes as we now fail the test. the fail isnt too bad the system does hold pressure but it drops to fast.

the problem is that the leak is under our concrete floor which ahs the UFH in it! does anyone know of a remedial pipe lining system that is available to coat the inside of the pipes to seal them?


any suggestions gratefully received


macandrc

 

[doitall]

What pressure are you testing it at.

 

[macandrc]

i was originally ttesting it at 100mm but since we have installed shallow shoer traps the max pressure we can achieve before the traps blow is just under 40mm i think.

 

[picasso]

speak to the ds, they are normall quite reasonable, if the drop isint to drastic they may pass it, there is nothing I know about that will seal the pipes from the inside, is any part of the bit thats leaking from the original pipework?

 

[muggles]

i was originally ttesting it at 100mm but since we have installed shallow shoer traps the max pressure we can achieve before the traps blow is just under 40mm i think.

Shouldn't have installed shallow traps then. No, really, you shouldn't, it contravenes the Building Regulations Part H which say that the minimum trap seal on a shower, when connected to a stack, is 50mm

If they won't pass it because of the leak (assuming the leak is under the floor) then you're going to have to dig it up. Theoretically you should be able to claim costs off the guys who laid the floor...

 

[doitall]

When the drains are laid they should be tested and passed by the building inspector.

Why are you testing them again.