Fire or Draft Stop
#1
Fire or Draft Stop
Code requires a firestop or draftstop behind the new stud walls in my basement (along the perimeter). However, although I think I know where it go, I am having a difficult time locating a good description on where it actually goes or what materials can be used. I had one set of plans that call for R-30 to be used and others to use 1/2 sheet rock or 3/4 plywood. I would rather go with the insulation
Thank you
Thank you
#2
Join Date: Aug 2002
Location: Mountain Williams Missouri
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I would go and ask code just what they want and how. That is by far the best way to do it. I like insulation but that R 30 you said dont .Cause it can just melt out so I would not go that way at all.
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#3
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Join Date: Jul 2004
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Firestopping and Draftstopping are different things
Originally Posted by aarohm
Code requires a firestop or draftstop behind the new stud walls in my basement (along the perimeter). However, although I think I know where it go, I am having a difficult time locating a good description on where it actually goes or what materials can be used. I had one set of plans that call for R-30 to be used and others to use 1/2 sheet rock or 3/4 plywood. I would rather go with the insulation
Thank you
Thank you
It would help us to know in what State you live so at least to tell us under what State code you operate.
That said, for framed basement walls, fireblocking is required at the top of framed walls where they meet the joists. The spaces between the joists usually need to be fitted with solid block 2xs to fit the joists tightly.
For conduits, wiring, cables, ducts, chases, etc...fireblocking can be done with compacted fiberglass insulation (no paper facing ) OR expandable foam insulation manufactured after Jamuary 2004 (for fireproof effectiveness).
Draftstopping only refers to breaking up large open areas such as above suspended ceilings so that not only can air exchange be made more effective but also that firestopping can be too.
For fireblocking see section in the 2003 IRC code: R602.8
For draftstopping see: R502.12