Spray foam? Around pipes in concrete slabs.

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Geniescience

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I have read that pipes should not come in direct contact with concrete. Mine are copper and cast iron. I'm in a high rise concrete building.

In a highrise building, to prevent air from rising from one floor to the next, should I spray foam into slab openings? It's bad air. I want to stop it from going through my living space and my wall cavities.

Some people have already used concrete to fill the gaps.

david
 

Jadnashua

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You might want to consider fireproof caulking. It would provide more than one thing - block the air you don't want, and give you (a little bit) more fire proofing between floors/units.
 
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