Why use Sprayfoam?
Research shows 40% of heat loss
in a house or building can be attributed to air leakage conducted
through the building envelope. Sprayfoam is applied as a liquid
and then expands 20-30 times it's original liquid size. It expands
to seal all cracks and gaps forming a barrier against air infiltration
unlike fibreglass. By creating a sealed air barrier and eliminating
air exfiltration, foam does not allow for wall condensation,
which would lead to mold, mildew, and wall damage within the
structure. Initial cost is higher than fibreglass but the heating
and cooling costs over a short period of time will easily make
up for it.
How does foam control
moisture and condensation?
Convection currents is the main
culprit in causing damaging moisture with the building envelope.
Warm moist inside air circulates and exchanges with cold dry
outside air in a cavity insulated with fibreglass. This moisture
in the air condenses forming dew within the insulation. This
decreases the effectiveness significantly of the fibreglass
and in turn will cause it to mold and rot. Sprayfoam creates
an air tight seal allowing no air movement through the wall
resulting in no condensation and no moisture problems.
What is the R Value in
foam?
R value is a number that supposed to indicate a materials ability
to resist heat loss. It is derived by taking the "k"
value of a product and dividing into the #1. The k value is
the actual measurement of heat transferred through a specific
material.
The test used to produce the"K" value is an ASTM test.
The ASTM test was designed by a committee to give us a measurement
value that they thought would be meaningful. This test was only
designed for fibre insulations-fibreglass, rock wool and cellulose
fibre.
This test did not take into account air movement (which every
building has) and moisture content. Water vapor is constantly
moving back and forth through the walls and ceilings either
from showers, cooking, atmosphere etc. Even small amounts of
moisture will cause a dramatic drop in a fibres insulations
R value by as much as 50%. Fibreglass is generally assigned
an R value of approximately 3.5. It will only achieve this if
there is zero air movement and zero moisture content. The average
house has enough leaks equal to the size of an open door.
Spray on polyurethane is the only commonly used insulation that
totally protects itself from air infiltration. The R value of
a material is meaningless if air can get past it.
Can anyone spray polyurethane foam in a house?
Only a certified installer is trained to spray foam in residential
homes. We are certified through CUFCA which is the Canadian
Urethane Foam Contractors Association.
Will I save money by using foam?
Yes! The initial cost is higher than cellulose or fibre glass
but spraying 2" or more does not need a vapor barrier.
It is it's own vapor barrier. Some of the initial costs are
made up for because you will be able to downsize your heating
and cooling systems. Your home or building will use less energy
and that puts money in your pocket.
Is Foam environmentaly friendly?
We spray Polar Foam Soya which is made from recycled plastic
bottles and renewable vegetable oils. It is the only Sprayfoam
Insulation that uses a zero ozone depleting blowing agent. It
meets all the requirements of the National Building Code of
Canada and exceeds the quality Standard CAN/ULC S 705.1 "Standard
for Thermal Insulation Spray Applied Rigid Polyurethane Foam,Medium
Density,Material Specification". Using less energy in your
home, will not only save you money but less fossil fuels used
decreases greenhouse gas emisions. Quick and cheap insulation
will not save you money or the environment.
Will a tight air seal be healthy for my family?
A tight air seal is what you want but you will need a heat recovery
air exchanger to bring fresh air inside and expell stale warm
air outside. I would rather have the air coming and going in
my home controlled by me and not have it leaking through poor
insulation and crack, gaps etc. in my house.
What is the R-Value in
foam?
The r-value is about 6.2/inch and is not affected by external
forces such as wind and temperature changes , like other fibrous
insulations. It is what it is, unlike fibrous insulations that
lose half their value when exposed to a 15km wind or -28 temperatures.
Does sprayfoam support mold growth?
Sprayfoam does not support bacteria or fungal growth.