On Oct 26, 6:04 pm, dbr wrote:
Is there a way to use only part of a can of urethane insulating foam spray, and
save the rest to use later? I find if you don't use it all right away the nozzle
and dispenser tube permanently clog.

For any aerosol you should always turn the can upside down and spray
until just propellant comes out. This will ensure that the nozzle
passage is clear for the next time. What happens when you do this
with the foam? Eventually you should just get propellant, then just
cap it for next time.