Specification

Performance Matters: Managing
Moisture In Wall Assemblies
Roxul ComfortBatt is an unfaced semi-rigid batt
insulation and a vapor retarder may be required by
building code depending on the geographic location
of the building.
The use of a vapor retarder will limit the amount
of water vapor that will move to the outside wall –
reducing condensation in the wall assembly. Even a
small hole in the vapor barrier can have a detrimental
effect on the performance of the wall and insulation.
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When insulation material such as fiberglass gets
wet, it can absorb moisture, reducing R-value and
presenting the risk of slumping and sagging within
the wall cavity.
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Roxul ComfortBatt does not absorb water and has
a low water sorption rate. It will maintain its shape
within the wall cavity ensuring maximum R-value is
maintained.
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Roxul ComfortBatt is resistant to water, rot, mold,
mildew and bacterial growth.
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Wall assembly construction is not perfect, but Roxul
ComfortBatt can minimize moisture risk.
Better Fit Equals Better
Wall Performance
To ensure the labeled R-value is achieved, batt
insulation in wood and steel stud wall cavities must
be gap-free and void-free. Gaps and voids are most
prevalent around electrical boxes, wires and pipes.
Roxul ComfortBatt is produced at a slight over-
thickness to ensure a friction fit within the wall cavity.
The batts will stay in place and perform equally well
in horizontal, sloped, dormer, vertical and overhead
applications.
Roxul ComfortBatt’s unique flexible edge ensures
the semi-rigid batts compress and expand between
studs and joists to eliminate slumping or sagging and
conform to off-standard wood studs.
Higher density batts reduce airflow within the wall
cavity, reducing convective losses. This translates
into a better performing and more comfortable
thermal wall.
Studies have proven that wall assemblies with
gaps and voids can result in 35% loss of the
stated R-value. Roxul ComfortBatt’s higher
density batts make it simple for precise
cutting to ensure a fit without gaps and voids.
Roxul cuts quickly and accurately with a serrated
knife, such as a bread knife, so you can easily achieve
optimal fit around pipes, electrical boxes, wiring,
ductwork, and between studs and joists that are
less than a standard width.
Compliance & Specification › 2lbs/ft
3
32kgs/m
3
R14/15 89 mm 5.9kgs/m
2
R22/23 150 mm 4.8kgs/m
2
R28/30 184 mm 2.8kgs/m
2
Density ASTM C 612-00 – 32 kg/m
3
(2 lbs/ft
3
)
89 mm = 2.8kgs/m
2
Fire CAN/ULC s102 Surface Burning Characteristics
Flame Spread = 0
Smoke Developed = 0
Moisture
Resistance
ASTM C 1104 Moisture Sorption 0.03%
THERMAL BATT INSULATION