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Rick, HVAC Supervisor
Category: HVAC
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Experience:  40+ yrs. experience as a licensed oil & gas technician.
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What is the proper insulation procedure faced insulation

Customer Question

What is the proper insulation procedure for foil faced insulation under radiant heat pipes like Pex. foil face up or down and touching or not touching heat pipes?
Submitted: 10 months ago.
Category: HVAC
Expert:  Rick replied 10 months ago.

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Assuming this is a staple up job (PEX stapled to the underside of the sub floor) then insulation is below the piping with foil face up facing PEX and the floor above. Best to not touch but it's not critical. The foil's reflective property works better if it doesn't touch the pipe.

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