CPVC piping should be depressurized during SPF application.
Closed-cell SPF should be applied using the manufacturer’s recommended maximum pass thickness and minimum time between passes.
Open-cell SPF should be applied using the manufacturer’s recommended maximum pass thickness.
When applying SPF around sprinkler heads, the sprinkler head should be masked to prevent SPF or overspray from entering and/or interfering with the operable parts of the sprinkler head.
Technical Information