Polyurethane Expanding Foam


Does anyone know if the polyurethane foam supplied in aerosol canisters at DIY stores, has any adverse effects on PEX Plastic barrier pipe. Long term or short term.
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This PDF suggests it is fine: http://www.plasticpipe.org/pdf/tn-39_application_of_pesticides_termiticides_near_pex.pdf (search for 'expanding').
JW
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No problems in the last few years. Check the can to see if it gives any specific warnings. You wouldn't want to find it is like using superglue on polystyrene!
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