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Thermal Performance
Save on heating and cooling costs*
All insulation materials respond to
a single basic principle: heat moves
from warmer areas to cooler areas.
On cold days, heat from inside tries
to get out. And on warm days, the
heat outside tries to get in. Insulation
slows the process. Properly installed
PINK Insulation products protect
your home with a thermal barrier
that helps reduce costly fuel bills
during heating and cooling seasons.
R-value explained
The insulation performance of all
insulation products is measured by a
common standard: R-value measures
resistance to heat flow.The higher
the R-value the greater the insulating
power. R-value is usually determined
by the thickness and density of the
insulation. In both fiber glass and
foam insulation, tiny air pockets
trapped in the insulation resist the
passage of heat ñ heat loss in the
winter and heat gain in the summer.
Generally, the thicker or denser the
insulation, the more air pockets and
the higher the R-value.
Air Infiltration
Before you can insulate, you must
control air leakage. Doing so can
result in annual energy cost savings
of a whopping 10%.
Cold windy days are the best time to
check for air leaks. Simply attach a
piece of tissue or light paper to a
string.Then hold it close to areas
where you suspect a draft. If the
tissue moves, you've found a leak.
Problem areas include the edges of
doors and windows, plumbing and
electrical wiring access through walls,
floors and ceilings.Weather-stripping,
caulking and sealing doors, windows,
cracks and openings can reduce or
even stop air infiltration in these areas.
Other ways to keep air from
penetrating and escaping through
your home's walls is by applying an
exterior housewrap beneath siding
when building a new home,
remodelling or re-siding. Or using
CodeBordTM foam insulation
sheathing on exterior walls.
Moisture Control
Showers, cooking, washing and
even breathing can put a surprising
amount of moisture into the home
ñ from 5 to 10 pounds a day.Washing
and drying clothes indoors can add
another 30 pounds.Vapour retarders
help control the amount of moisture
passing through insulation, minimizing
condensation within exterior
walls, ceilings and floors. In winter,
moisture that passes through to
these surfaces can accumulate and
condense on the cold inner sides
of exterior surfaces. Eventually, this
condensation may blister the outside
paint, form stains on drywall ceilings
Ceiling 40%
Floor 36%
Door &
Windows
10%
Reducing air infiltration can dramatically
improve your home's thermal
performance.Most of a
home's air infiltration
occurs through
the ceiling
and floor.
CodeBordTM
Insulation
Interior Wall
Fiber Glass
Insulation
Water
Vapour
Vapour
Retarder
Water
Vapour
*Savings vary. Higher R-values means greater insulating power.
or walls, or even damage your house
structure.The vapour retarder is
always installed toward the warm-inwinter
side (living area) of the house.
A separate 6 mil polyethylene
film should be applied over installed
insulation to help control the
amount of moisture passing through
insulation, minimizing condensation.
Ventilation
When your attic or crawlspace is
properly ventilated, a positive airflow is
created, allowing the house to breathe
thus preventing moisture build up.
In the Attic
Soffit vents ñ openings under the
eaves ñ combined with roof vents
or gable vents create positive
movement of air out of the attic.
Always provide at least two vent
openings allowing air to flow in one
and out the top. As a general rule,
one square foot of free vent area
should provide for each 150 square
feet of attic floor area when no
vapour retarder is used. As a general
rule, one square foot of free vent
area should provide ventilation for
each 300 square feet of attic ceiling
area, is recommended and a vapour
barrier is to be used.
Batts and loosefill insulation in
attics must not restrict the ventilation
air at eaves. raft-R-mateTM baffles
retain the insulation and provide
passage for ventilation air.The number
of raft-R-mateTM sections required
along each eave is defined by need
for 50% 25% of the required free
vent area to be at the eaves with
each 22-1/2" wide raft-R-mateTM Attic
Vent providing 26.5 square inches or
0.184 sq.ft. of vent area and each
11-1/2", half raft-R-mateTM Attic Vent
providing 12.75 square inches or
0.089 sq.ft. of free vent area.
In a crawlspace:
The dirt floor of crawl spaces
should be covered with a 6 mil
polyethylene vapour retarder.
One square foot of free vent
area is recommended for every
1500 square feet of floor area
and a vapour retarder is required
on the warm-in-winter side of
the insulation.
UNVENTILATED
VENTILATED
UNVENTILATED
VENTILATED
80
90
150
75
70
IN SUMMER
In hot weather, proper ventilation prevents the
attic from becoming a hot-box that spills
unwanted heat down through the attic floor
(even if the attic is insulated) into the living area.
IN WINTER
In cold weather, proper ventilation helps
prevent moisture from condensing on the
insulation, rafters or roof deck.
In addition to controlling moisture from
internal sources it is important to recognize
that other unwanted sources of moisture
can enter the structure and cause damage
including mould growth. As manufactured,
fiber glass insulation is inherently resistant
to mould growth1. However, mould growth
can occur on building materials, including
insulation, when it becomes contaminated
with organic material and when water is
present.To avoid mould growth on fiber
glass insulation, remove any water that has
accumulated and correct or repair the
source of that water as soon as possible.
Insulation that has become wet should be
inspected for evidence of residual moisture
and contamination, and any insulation that
is contaminated should be promptly
removed and replaced.
1ASTM C-1338-96 Fungi Resistance of Insulation
Materials and Facings
ESSENTIAL HOME ISULATION ISSUES
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