Is there a compatibility issue with Zip (Huber) R- Sheathing and open-cell Icynene?
While constructing a home in Eastern MA and utilizing 11/2″ Zip R Sheathing on 2×6 walls, Icynene Open Cell foam was sprayed into the stud bay/wall cavity (against the Foam board backing). Shortly after spraying I checked a few spots to see the consistency of the foam and noticed that the foam had not adhered to the Zip foam board, creating a gap ranging in size from 1/4″ to 2″. There were a few locations where the foam had adhered, but the majority of the test spots revealed a gap as noted.
Has anyone had any similar experience with this apparent compatibility issue? If so, what was done to remediate the problem?
If the gaps are left and not filled with insulation, will this be a potential problem area for condensation?
The foam installer, Huber and Icynene have all been notified (and have reviewed on site), but have no explanation or solution at the time of this posting.
Any feedback or suggestions would be appreciated.
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