Repacking an inverted oakum / cast iron 4" joint on a sewer stack?

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John Gayewski

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John I still pour lead joints as some of the older buildings have galvanized piping 4"- 6" and when installing a floor flange for example I do not have access below.

On roof drains I like to use lead as it is impervious to acid rain ,bird droppings and most importantly Rubber can crack over time as summer heats the drains to over 110 DEG F and in the winter they can go below freezing.

I had to install a drain on a set back and below was not an option so I had to use oakum and pour this joint
Most employers here won't allow it.
 
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