WHAT ARE THEDIFFERENCES BETWEENOPEN AND CLOSED CELL
SPRAY FOAM INSULATION?
LEARN ABOUT THE
BIG DIFFERENCES BETWEEN
OPEN AND CLOSED CELL SPRAY FOAM
BEFORE DECIDING WHICH ONE TO HAVE INSTALLED.
CLOSED-CELL FOAMS
are made up of trapped gas bubbles
that are formed as the foam expands and cures.
The blowing agent
in open-cell foams is released
into the atmosphere when it expands and cures.
In closed-cell spray foam,
the trapped gas increases
the cured foam's insulation capability.
OPEN-CELL FOAM
typically has R-values of 3.5-4.0,
whereas closed-cell foam has R-values of 6.0-6.5.
Open-cell spray foam
is best for structures where space
is not limited, such as a crawl space or attic.
Closed-cell spray foam
is best for getting high R-values
in shallow areas of a structure.
If you are on a tighter budget
then closed-cell foam
would be your best option.
Open-cell foam
is vapor semi-permeable and
closed-cell foam is vapor semi-impermeable.
Closed-cell spray foam
is the best option for preventing
liquid water from getting into a structure.
Closed-cell foams
are much denser and
more common than open-cell foams.