I am still curious why these guys think that penetration needs a "fire stop" rated assembly to plug the hole (cite please). This needs to be draft stopped if we are talking about 1 & 2 family dwellings unless it is living space above a garage. (a 1 hour assembly) Spray foam is a suitable draft stop unless there is a local code amendment requiring more.
Perhaps you should learn more about the building codes in use in other areas of North America before you type out bullshit in a Usenet posting...
It is not "draft stop" because that is entirely for energy codes, Fire Block ? Never heard that term used before as the proper way to refer to the passive fire protection method being discussed here is fire stop...
Your diatribe does not mitigate the fact that "great stuff" foam is not now, has never been NOR will ever be rated as a material allowable for use for fire stop purposes...
~~ Evan
Agreed, it was common to use expanding foam for this purpose up until the building code changed a couple of years ago, now it is required to use the rated and approved means of fire stopping in all of those situations... Unless your jurisdiction is still using and applying an older version of the code in their area...
~~ Evan
Sorry, but your jurisdiction is apparently using an older version of code -- it is a requirement in most places which have adopted the latest building codes and could potentially be a requirement in your area soon as the code is disseminated from the source and trickles down and gets adopted by each enforcement jurisdiction...
the orange can great stuff is.
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