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There are many
uses for spray polyurethane
foam
insulation in the industrial sector.
Some areas
that benefit from spray polyurethane
foam
insulation include:
- Tank and
Storage Vessels
- Truck
Bodies – including
refrigeration
- truck
bodies
- Pipelines
- Roofing
- Pipes and
ducts
Air
Barrier
Research show
that 40% of building heat loss can be
attributed to air leakage conducted through the
building envelope. Tests for air leakage
conducted by an independant laboratory
recognized by the CCMC show
that Foams on Homes product
PolarFoam PF-7300-0 soya exceeds 500 times the
requirements of the NBC as an air barrier
material.
These results
confirm that PolarFoam PF-7300-0 soya is one of
the highest performance air barrier materials
on the market and thisfeature is the key
element in an air barrier system that meets the
objectives of NBC.
By creating a
sealed air barrier and eliminating air
exfiltration, PolarFoam does not allow wall
condensation that can often rsult in mold,
mildew, and wall degradation. PolarFoam fully
adheres to provide a seamless, monolithic air
barrier conforms to irregular shapes and allows
easy detailing around penetrations. Its closed
cell rigid polyurethane foam formulation
creates an effective, rigid, seamless, and
durable air barrier.
N
ational
B
uilding
C ode requirements:
Air Barrier
material = 0.02L /(s.m2) @ 75 Pa
Tested results
of PolarFoam PF-7300-0 Soya:
Air barrier
material, thickness 25mm = 0.00004 L/(s.m2) @75
Pa
Vapour
Barrier
Water vapour
permeance is the soeed which water goes through
a homogenous material. The National building
code stipulates, that a vapour barrier must
have a water vapour permeance less than 1.05
PERM (60 ng/Pa.s.m2 (0.77 PERM)
75mm of
POLARFOAM PF-7300-0 Soya sprayed applied on an
exterior gypsum board = 44 ng/ Pa.s.m2 (0.77
PERM)
75mm of
POLARFOAM PF-7300-0 Soya sprayed applied on
concrete blocks = 22ng/ Pa.s.m2 (0.38
PERM)
When a
building envelope assembly contains only a
plastic foam as insulating material and that
the performance rate of this assembly is less
than 1.05 PERM (60 ng / Pa.s.m2). this assembly
does not need any additional vapour
barrier.
As far as
sustainability of the building envelope is
concerned, it is imperative to have a perfect
continuity of the air barrier material which is
much more important than the performance of the
vapour barrier.
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