While you are at it, cut off about a 1” cube of the foam. Skewer that cube on a 
wire and put a match to it all within a controlled, well ventilated, 
non-combustible environment nowhere near the job site. Film the event with your 
phone. You may be wanting to show it.

Allan Seidel
St. Louis, MO

> On Sep 28, 2023, at 4:54 PM, Brian Harris <[email protected]> wrote:
> 
> Ken-
> Thanks and will do. 
> 
> Sent from my iPhone
> 
>> On Sep 28, 2023, at 5:31 PM, Ken Wagoner <[email protected]> wrote:
>> 
>>  And I will be very interested to find what "code" they're referring to.
>> 
>> I submit that if one is to consider the spray foam insulation as 
>> unobstructed as defined by -13, then the deflector position relative to the 
>> bottom level of the foam is required to be between 1" and 12" per 10.2.6.1.1 
>> ('22 edition). 
>> 
>> If the bottom of the insulation is to be considered as obstructed, or the 
>> foam is between members which are obstructed, then the deflector must be 1" 
>> to 6" below the member, but no greater than 22" down from the ceiling/roof 
>> deck above, per 10.2.6.1.2 ('22 again).
>> 
>> I can't wait to learn the rationale behind such a requirement.
>> 
>> In short, remember my oft repeated mantra, whenever someone pops up with 
>> something like this:  Prove it.
>> 
>> keep the forum informed, ok?
>> Ken Wagoner, SET
>> Parsley Consulting
>> 500 West Mechanic Street
>> Harrisonville, Missouri 64701-2235
>> Phone: (760) 745-6181 
>> Visit the website 
>> <https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.parsleyconsulting.com%2f&c=E,1,Y5zKJKPEh1mBEBqSR-VE9cUKl5y-eyP8BpvmE_5j9ZqW2eJbNphYzrCMBZ-2YuX6d-RRkHI4gQ1FV-cvOeCfRC58uZS9NiToZv2mx7909oCqLvCW_n5hDHeK&typo=1>
>> On 9/28/2023 2:12 PM, Brian Harris wrote:
>>> The AHJ is supposed to be providing the “code” where this came from. Should 
>>> be interesting.
>>>  
>>> Brian Harris, CET
>>> BVS Systems Inc.
>>> bvssytemsinc.com <http://bvssystemsinc.com/>
>>>  
>>>  
>>> From: Eric Rieve <[email protected]> <mailto:[email protected]> 
>>> Sent: Thursday, September 28, 2023 2:54 PM
>>> To: Discussion list on issues relating to automatic fire sprinklers 
>>> <[email protected]> 
>>> <mailto:[email protected]>
>>> Subject: [Sprinklerforum] Re: Spray Foam Insulation
>>>  
>>> Funny enough I was told the same a few years ago. His reasoning was that 
>>> the uneven nature of the foam application could cause obstructions that 
>>> weren’t readily apparent so extra clearance was warranted.
>>>  
>>> From: Brian Harris <[email protected] 
>>> <mailto:[email protected]>> 
>>> Sent: Thursday, September 28, 2023 2:48 PM
>>> To: [email protected] 
>>> <mailto:[email protected]>
>>> Subject: [Sprinklerforum] Spray Foam Insulation
>>>  
>>> Anybody ever have an AHJ say you need 4” clearance from the bottom of spray 
>>> insulation to the deflector?
>>>  
>>> Brian Harris, CET
>>> BVS Systems Inc.
>>> bvssystemsinc.com 
>>> <https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fbvssystemsinc.com%2f&c=E,1,wo5wYVtpGosaBntgPq_5rudqm8ADj3XpDv10H3ACDcs2pNvWgifdhkbEDh5cNdO54rGdJmuywOvI-uxu4wi0CjpghGrXuaIGLLlPSAjRPh_ujRUBa-eEnA,,&typo=1>
>>> Phone: 704.896.9989
>>> Fax: 704.896.1935
>>>  
>>>  
>>> 
>>> 
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>> 
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