Insulating Beneath an Exposed Concrete Floor
Last Post 13 Feb 2018 09:56 PM by Dana1. 21 Replies.
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mtrentwUser is Offline
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11 Feb 2018 03:14 PM
I'd be curious about the space underneath the bridge. What is it's use, Garage? Parking? Wouldn't any type of foam likely require some sort of fire/ignition barrier?
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13 Feb 2018 09:56 PM
Posted By mtrentw on 11 Feb 2018 03:14 PM
I'd be curious about the space underneath the bridge. What is it's use, Garage? Parking? Wouldn't any type of foam likely require some sort of fir/ignition barrier?


Code requires a timed ignition barrier between the foam and conditioned space/ interior of the building. The slab is a good enough ignition barrier.

Foam insulation has been used on roofs and the exerior of walls without ignition barriers between the foam and exterior forever. That's a serious issue on walls for high-rise buildings with vented cladding (as in last year's apartment block fire in the UK), but not for 1-2 story houses, and certainly not for a drive-under parking space unless it's an enclosed garage.
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