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SPF Sprayed Polyurethane Foam Building Envelope

The Building Envelope

The total Building envelope is a system of construction components which provide protection against movement of:

AIR
MOISTURE
HEAT

The true performance of your building system can not be measured with the R-value of the insulation alone, but must also consider air movement, moisture control, health, safety, durability and comfort as well as energy efficiency. This is true whether your building is commercial, residential or multifamily...SPF addresses all of these needs. SPF meets the insulation requirements for both new construction and improvements to existing structures.

SIX MECHANISMS OF HEAT LOSS THROUGH A WALL OR CEILING
1. Conduction
2. Radiant heat loss
3. Convection currents
4. Infiltration (Wind Pressure)
5. Intrusion (Wind Wash)
6. Moisture Accumulation (Relative Humidity, Dew and Frost)


COMFORT
◆ SPF will eliminate drafts and increase comfort.
◆ SPF helps maintain a comfortable, constant
temperature throughout the building.

HEALTH
◆ SPF assists in providing indoor air quality;
◆ Reduces the infiltration of outside air pollutants;
◆ Reduces moisture condensation within the building walls and roofs.



VALUE
◆ Excellent insulation (R-value) of SPF reduces heating and
cooling costs dramatically.
◆ SPF maintains its durable properties for the lifetime of a building.
◆ Reduces construction cost by providing an air barrier, insulation
and moisture barrier all in one product.
◆ SPF reduces long term maintenance and increases the life of the building.



ENVIORNMENT
◆ In the building envelope, SPF helps to reduce fossil fuel consumption
◆ SPF provides a lower environmental impact promoting “sustainable” construction.
◆ SPF provides greater durability with less maintenance.
◆ SPF helps reduce structural damage due to high winds.

Conditions such as Swimming Pool Climates or Freezers Require Special Consider Special Consideration. Good Building Science Requires Controlled mechanical Ventilation.


For additional information contact The SPRAY POLYURETHANE FOAM ALLIANCE The Alliance has amassed a tremendous library of information on SPF.
To order this document call (lit sales) and request AY-136.

Spray Polyurethane Foam Alliance
4400 Fair Lakes Court
Suite 105
Fairfax, Virginia 22033
Tel: 800.523.6154
Fax: 703.222.5816
www.sprayfoam.org