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Rick
Rick, General Contractor
Category: Home Improvement
Satisfied Customers: 20541
Experience:  Licensed construction supervisor with 35+ yrs. experience.
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What are the codes foam in Fletcher oh

Customer Question

What are the codes for spray foam in Fletcher oh
Submitted: 1 year ago.
Category: Home Improvement
Expert:  Rick replied 1 year ago.

I'm not sure what you're looking for. Required R (insulation thickness) rating for your area? Something else?

Customer: replied 1 year ago.
I'm looking for thermal barrier requirements for spray foam in a pole building that's used for storage and workshop
Expert:  Rick replied 1 year ago.

foam plastic shall be separated from the interior of a building by an approved thermal bar-

rier consisting of 1/2 -inch (12.7 mm) gypsum wallboard or

equivalent thermal barrier material that will limit the aver-

age temperature rise of the unexposed surface to not more

than 250 °F (121°C) after 15 minutes of fire exposure in

accordance with the standard time-temperature curve of

ASTM E 119 or UL 263. The thermal barrier shall be

installed in such a manner that it will remain in place for not

less than 15 minutes based on a test conducted in accor-

dance with UL 1715

.

Expert:  Rick replied 1 year ago.

The exception being 1 story buildings with automatic sprinklers:

Exterior walls—one-story buildings. For one-story buildings, foam plastic having a flame spread

index of 25 or less, and a smoke-developed index of not

more than 450, shall be permitted without thermal barri-

ers in or on exterior walls in a thickness not more than 4

inches (102 mm) where the foam plastic is covered by a

thickness of not less than 0.032-inch-thick (0.81 mm)

aluminum or corrosion-resistant steel having a base

metal thickness of 0.0160 inch (0.41 mm) and the build-

ing is equipped throughout with an automatic sprinkler

system in accordance with Section 903.3.1.1