WJP
New Member
I seem to have a very small small leak on two Ferncos I installed yesterday. I have cut a wye into my 4" cast iron waste line for a new basement bathroom and used 2 Ferncos intended for cast to PVC. The gap from Cast to PVC is 1/4" on each end so no sagging. The Ferncos are good and tight but not over tight/deformed. This is on the horizontal and there is no other possible source of the leaks (the wye/branch is capped for the moment and dry). The leaks are only at the Cast end of the Ferncos - the PVC ends are dry.
I am thinking the bit of corrosion on the exterior of the cast is preventing a full Fernco seal - are there tips of the trade for this? Perhaps filing or a bit of silicon?
From the cross section I cleanly broke out the 110 year old cast looks solid with no interior corrosion and still very thick and even walls - the only corrosion evident is the bit on the outside surface from soil moisture. It's not actually that rough - certainly no more than any number of online images/videos I've seen but it seems there must be enough roughness for this issue..
Thanks all.
John
I am thinking the bit of corrosion on the exterior of the cast is preventing a full Fernco seal - are there tips of the trade for this? Perhaps filing or a bit of silicon?
From the cross section I cleanly broke out the 110 year old cast looks solid with no interior corrosion and still very thick and even walls - the only corrosion evident is the bit on the outside surface from soil moisture. It's not actually that rough - certainly no more than any number of online images/videos I've seen but it seems there must be enough roughness for this issue..
Thanks all.
John
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