Re: New houses - soil drains

message from IMM on 24 May 2004
The old cast iron pipes would crack after a freeze. This is highly unlikely
to happen on a plastic stack. Water inside may freeze but it will not
fracture the pipe. Also it takes a real heavy freeze to block a drain.
Although a trickle leak down it will build up and block the drain.

Having the stack on the outside also acts like a large thermals bridge.
They can suck heat out of the house. Best having them inside using HepVo
traps and/or a Durgo valve to prevent penetrations through the roof.
 

Archived message: Re: New houses - soil drains (UK D-I-Y House Improvement)
 
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