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| I would be surprised if someone has had this exact issue, but I'm hoping for some direction in researching this. (e.g. I've been to icynene.com, but didn't find answer that I wanted.)
The attic insulation is R-38 icynene. The inspector is suggesting that the icynene must be covered with gypsum board. I thought there might be a difference if the space was occupied vs unoccupied attic space? b-t-w, the attic space ceiling ht is much too low for future occupied use. Thanks! |
Follow-Up Postings:
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| Code requirement for an ignition barrier may be satisfied by 1.5" of mineral fiber, 3/8" drywall or 1/4" wood structural panels; other ignition barriers, including spray or roll-on fire barriers, may be accepted. See link below for picture matching your situation. Your SPF installer should have mentioned this requirement. |
Here is a link that might be useful: Decoding Thermal and Ignition Barrier Requirements
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| Ignition and thermal barriers are different, but related concepts. Having one doesn't preclude the necessity of having the other. |
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| Wow, that was FAST, Worthy! From the date on the powerpoint booklet, I guess this is timely. The drawings at the back of the booklet are very helpful (our situation is a vented attic). When I've had a chance to discuss with builder and inspector, I may be back on-forum. Thanks so much for your help! |
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- Posted by IcyBuildingScience (My Page) on Thu, Aug 16, 12 at 15:53
| Hi mjlb, We'd like to understand more about your attic insulation and the gypsum board suggestion. You are welcome to contact our Building Science team to discuss your unique situation and get to a solution, please call us on 1-800-758-7325 (tollfree). Look forward to hearing from you! |
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- Posted by energy_rater_la (My Page) on Thu, Aug 16, 12 at 18:16
| additional info. http://sprayfoam.com/newsarchives/archivedetails.cfm?id=512 open or closed cell? you are aware that to achieve best of luck. |
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| Thank you all! It never ceases to amaze me the info available on-line. Geez - a forum devoted to thermal barrier and ignition barrier for sprayfoam - who'd a thunk-it? I passed the icynene 800 tel number on to the builder, since he is more conversant with the details of this project. |
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