Cutting this out and fixing it. Just wondering what caused this. Good
thing i found it, because it’s ready to burst. Is it from spray foam? Kinked and heated too much. Looks like a chemical got to it.
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That looks spray foam adhesive, but seems unlikely to cause that kink--probably correlated in that they spray foamed a hole with a turn.
Based on the picture of the cold water pipe penitrating thru the plywood above having no thru grommet I suspect your original installed caused the damage just from their handling of the pipe.
And what kind of grommet would work in this application. Thank you
First I'm not a plumber, so the hole is drilled oversize based on the grommet; the grommett is placed around the pipe and slid into the oversize hole fitting snugly. Keeps the pipe from moving and protects the pipe from the wood.
https://www.plasticpipe.org/common/Uploaded%20files/1-PPI/Manuals-Design%20Guides/PEX%20Design%20Guide/Design%20Guide%20-%20Residential%20PEX%20Water%20Supply%20Plumbing%20Systems/Chapter%209%20%E2%80%93%20Installation/Chapter%209%20%E2%80%93%20Installation.pdf
I think the most relevant part of this guide is the following:
Install tubing cautiously to avoid bending, kinking, or abrasion
Great how to guide. Loaded with great information. Thanks