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Old 10-17-2011, 05:15 PM   #16
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open cell sprayed insulation and PEX

I bet it would not be a problem with water in the pipes, even if it would be a problem with dry pipes.

I bet you could do a light spray over the PEX, let is set and cool while working elsewhere, then do the full spray. The initial spray would protect the pipes from the heat of the full spray.

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Old 10-17-2011, 08:52 PM   #17
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open cell sprayed insulation and PEX

Originally Posted by MLMIB View Post
I can't imagine that any curing chemical reaction would be hot enough to cause a problem with water pipes.
Massachusetts Fire Officials Urge Caution With Spray Foam

"It's well-known that two-component spray polyurethane foam (SPF) gives off a substantial amount of heat as it cures."
"...at least three fires, one being a fatal fire, are believed to have been started during the application of spray foam insulation, and currently remain under investigation."
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Old 10-18-2011, 08:40 AM   #18
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open cell sprayed insulation and PEX


Spray foam contractors know that insulation needs to be done in layers to prevent excessive heat build up. Get a contractor that knows his trade and you will be fine.

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