Our building inspector said that we need to have a 'ring' around anything that penetrates the Sheetrock firewall that is between the garage and the house.
This 'ring' goes around Drain/Vent Pipe, Dryer Duct, Electrical Wires, etc. and when it gets hot, it expands to collapse the hole. The HVAC guy called it a medicock ring, though in doing some searching for it I came up with some, er um, interesting sites.
Can someone point me in the right direction?
Thanks, Scott
I think the word he was looking for was "intumescent".
Search on "firestop ring" or "firestop products"
Useful set of links. Thanks again Speedy. TB
Here is a specific example of an intumescent fire collar:
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Does that have anything to do with Viagra?
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