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John Perkins Posted: Aug 22, 2011 06:08 PM	Type 2 Metal buildings I am spraying a metal type building and looking for something that is approved in Type 2 building, our inspector is set on not letting us spray the closed cell system in the roof. It is an exposed area about 20' above grade. We were going to spray Blazelok TB which is a 15 minute thermal barrier..any information would be appreciated...
Posted: Aug 22, 2011 06:27 PM	Just make sure whatever coating you use is tested on the foam brand you use for the insulation. Code requires a test on the exact "system", which includes the foam type (CC or OC) and brand PLUS the coating type, brand and coating coverage rate (or mils thickness). As always I suggest using only ICC certified systems. (ICC ESR reports)
John Perkins Posted: Aug 22, 2011 06:40 PM	I put in for the use of CC certainteed with the Blazelok TB system his response was that the Specification sheet did not approve or disapprove the use of the system for Type V Buildings. Do you know of any systems used in a similar app previously? Either way thanks for you info and time..
Posted: Aug 24, 2011 03:53 AM	as mikey said,,many code officials are looking at things as a "tested system",,,foam & system tested together,,,hence the approval of the system,,,that being said,,, another thingy,,,look at the report under 2.0 uses: many spray foam manufacturers seem to only (not sure of right term here)rate to class V,,why???but if you look you will find a few that cover all types of construction,,hmmm,,why the hell would you want to limit your ability to apply your product??? so probably the foam you showed him is uses type V and doesnt show type II(guessin here) and the Blazloc probably aint on the es doc as tested coating so he's sayin it aint there in writein showin it as an approved system,,cause it aint..lol...clear as mud???
mason Posted: Aug 24, 2011 04:57 PM	Commercial building require a lot more fire tests than residential. First the whole assembly needs to have an hourly fire rating, achieived with ASTM E 119. Then if the foam plastic is not part of the original tested assembly it must be tested in accordance with NPFA 285 to verify the foam does not change the hourly fire rating. This takes dozens of fire tests to comply with the many types of commercial building construction, so only a few suppliers put up the bucks to get specific approvals on over types of buildings. Go to the ICC ES evaluation reports and look for a supplier that has approvals over metal panels.

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Comments

John Perkins

Posted: Aug 22, 2011 06:08 PM

Type 2 Metal buildings

I am spraying a metal type building and looking for something that is approved in Type 2 building, our inspector is set on not letting us spray the closed cell system in the roof. It is an exposed area about 20' above grade. We were going to spray Blazelok TB which is a 15 minute thermal barrier..any information would be appreciated...

Posted: Aug 22, 2011 06:27 PM

Just make sure whatever coating you use is tested on the foam brand you use for the insulation. Code requires a test on the exact "system", which includes the foam type (CC or OC) and brand PLUS the coating type, brand and coating coverage rate (or mils thickness).

As always I suggest using only ICC certified systems. (ICC ESR reports)

John Perkins

Posted: Aug 22, 2011 06:40 PM

I put in for the use of CC certainteed with the Blazelok TB system his response was that the Specification sheet did not approve or disapprove the use of the system for Type V Buildings. Do you know of any systems used in a similar app previously? Either way thanks for you info and time..

Posted: Aug 24, 2011 03:53 AM

as mikey said,,many code officials are looking at things as a "tested system",,,foam & system tested together,,,hence the approval of the system,,,that being said,,,
another thingy,,,look at the report under 2.0 uses: many spray foam manufacturers seem to only (not sure of right term here)rate to class V,,why???but if you look you will find a few that cover all types of construction,,hmmm,,why the hell would you want to limit your ability to apply your product???
so probably the foam you showed him is uses type V and doesnt show type II(guessin here) and the Blazloc probably aint on the es doc as tested coating so he's sayin it aint there in writein showin it as an approved system,,cause it aint..lol...clear as mud???

mason

Posted: Aug 24, 2011 04:57 PM

Commercial building require a lot more fire tests than residential. First the whole assembly needs to have an hourly fire rating, achieived with ASTM E 119. Then if the foam plastic is not part of the original tested assembly it must be tested in accordance with NPFA 285 to verify the foam does not change the hourly fire rating. This takes dozens of fire tests to comply with the many types of commercial building construction, so only a few suppliers put up the bucks to get specific approvals on over types of buildings.

Go to the ICC ES evaluation reports and look for a supplier that has approvals over metal panels.

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