08:47AM | 01/21/02
Member Since: 12/19/01
29 lifetime posts
I need to put some fire blocks in the walls of my balloon framed house while I'm remodeling the upstairs. The problem is the beams/studs are various shapes, somewhere in the 5"X5" range, but not perfect. Someone had mentioned a flexible/insulation type of blocking I could cut close to the size and then squeeze it in. Anyone heard of this? It would take a very long time to custom cut every board to fit in. I also considered just stuffing a wad of insulation in very tightly, but not sure how effective that would be. I've also considered cutting 2X6's close to the right size and filling the remaining void with expanding foam or something similar. An opinions?

Mark Hammond

04:09PM | 01/22/02
Member Since: 05/09/01
246 lifetime posts
Hi Sebring,
There are two things to consider. First, and probably most important, check the code for your area to see what is acceptable for fire stops. Some materials are not permitted in some towns and so you must be careful what you choose. Your insurance company might balk on paymenmts in case of a fire if the house is not up to code.
The other thing is that if the house is balloon framed you may be able to measure at the bottoms of the stud bays and get the true measurements for any given space. You will probably find that the openings are close to the same dimensions where the studs are nailed and you can cut them all (or most) the same size and when fitting them force all the studs back to true. Good luck....Mark Hammond


04:08AM | 01/23/02
Member Since: 12/19/01
29 lifetime posts
Thanks Mark. I found what I was looking for yesterday, it's called Roxul Acoustical Firebatt. Comes in 2'X4' sheets, and thickness from 1" up to 6". Non-combustible and melts at 2150*F. We really don't have local building codes where I'm at except for commercial. I did talk to them and they said to nail a 2X6 in, but there was no code concerning it. The Roxul has some flex to it and can be compressed a bit to fit into the stud bay. Only cost me $21 for way more than enough to do what I'm doing, cheaper than wood too. Thanks again.


Mark Hammond

03:39PM | 01/23/02
Member Since: 05/09/01
246 lifetime posts
Hi Alan,
Nice to know that things worked out for you. I have bookmarked Roxul for the future. It all comes in handy. Good luck.....Mark Hammond


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