I am installing interior T&G planks that are just under 3/4″ thick. They will be installed directly over the studs and insulation (I cannot install dry wall underneath). I heard about a fire paper to get the necessary fire rating. Anybody know the name of the product?
I don't know the name but I had an insulation sub price it out for me as an option on a job last year.
If I can get a hold of him i will ask him the name and supplier.
Thanks - I talked to an insulation contractor and was told about FSK Paper. Sounds like that is what I need.
I worked construction in college and for my mid-life crisis decided to build a mtn cabin. Rules have changed considerably from 30 yrs ago.
Just googled the FSK paper.
That is the stuff.
Glad ya found it.
Life is Good
The FSK paper I find here: http://www.jrproductsinc.com/shop/pc/viewPrd.asp?idcategory=18&idproduct=111 is only tested as to surface flame spread. It will NOT substitute as drywall in protecting insulation from a fire.
"Flame spread" is a test where they see if the face of the product will catch fire. Those tests can be measured in minutes.
Wall assemblies - to establish the fire rating of the wall itself - are subjected to one big actual fire for at least 20 minutes. During that time, the wall cannot fail, nor can the 'protected' side get hot. This is the sort of thing drywall excells at.
don't assume that T&G over open framing will not pass fire ratingdid a more cathedral ceiling in last year & ran by the inspector my plans - either 1/2"cdx plywood that I would tape & mud to get airtight & then apply ceiling beadboard to that or just nail beadboard to ceiling joists
he said call a plan checker who immediately went over w/ me calling out specs & either option worked - thinking if it was cedar it may have not passed threshold ( wood species were considered )
went w/ airtight scheme
I checked with the inspector in our area - he said they are pretty strict on the 3/4" thickness. If slightly less than 3/4" material then need either sealed drywall or this FSK paper.
The cabin is logs on the main floor and 2x4 framing on gable ends. I have T&G that matches logs to complete the gable ends.
The FSK paper is cheap and looks pretty easy to install.
I'm curious. I've never heard of the paper. What walls do you require a rated assembly for in a cabin?