Unvented D2 Pipework.

[jackplumb]

Does the discharge pipe from Tundish have to be sleeved when passing through a wall?

 

[melmos]

If copper going through a brick wall, I'd say yes. Having seen a couple freeze over the last winters a bit of insulation wouldn't go amiss

 

[CXR100]

I dont remember anything about it having to be sleeved thru a wall in the unvented exam, but i thaught that it was just a rule of thumb / good practice to sleeve any pipework going thru a wall

 

[Gray0689]

If copper going through a brick wall, I'd say yes. Having seen a couple freeze over the last winters a bit of insulation wouldn't go amiss

What was freezing there should be no water init to freeze!

 

[Gray0689]

Does the discharge pipe from Tundish have to be sleeved when passing through a wall?

And nothing says it has to be a leaved

 

[melmos]

In industrial unit under sink, discharging and owner never noticed, so water just froze as it was so cold

 

[Mike Jackson]

It will still freeze if it's insulated if it's cold enough to freeze running water.

 

[R1CKY]

Does insulating open ended pipework really make much of a difference anyway? Its like having cavity insulation on your house and leaving the front door open!!