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]> Sent: Thursday, September 28, 2023 2:48 PM To: [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<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935
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