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Spray Foam Features
Spray foam (or polyurethane spray foam – SPF) is the ideal roofing material for flat roofs. SPF consists of a combination of two chemicals that are heated and passed through a spray gun. After application, the mixture expands, and small air bubbles are trapped in the foam, making the roof particularly effective in insulation against heat and cold.
Spray polyurethane foam creates a seamless roof system that offers enormous energy savings, excellent insulation, and excellent wind and water resistance. This is a two-part application process installed on existing roofs. The first application fills cracks and seams, then expands to form a closed surface. The second application is a protective layer, which makes the roof particularly durable and resistant to weather conditions.
The advantages of spray foam insulation are listed below.
Spray foam insulation contributes to the industry’s sustainability goals, providing many functions in one product that incorporates many sustainability measures such as
- thermal efficiency
- moisture control
- storm resistance
- structural improvement
Spray Foam Insulation Processes
After the foam has hardened, the material is essentially harmless, free from harmful degassing, and can be removed without special consideration. The foam surrounds everything in the wall recess, including pipes, wires, junction boxes, etc. During installation, make sure that foam does not get into electrical rooms or cover surfaces on which it is undesirable.
Calibration ensures that the right amount of product is used and that the spray volume is affected by pressure and nozzle selection. Therefore, it is best to leave this to the professionals, because potential errors in calibration can reduce or over-utilise the product in your order. Also, the spray volumes change when the pressure is not constant, especially when the pressure drops during calibration, which causes predictable abuse.
- Air bubbles make SPF extremely energy-efficient – studies have shown that foam roofs often lead to energy savings of 30% or more compared to other roof systems.
- Another study by Oakridge National Laboratories found 50% lower cooling and heating costs. That’s 58% less in energy costs.
- It is said that a 5% gap in insulation accounts for 50% of heat loss.
- As a rule, at least 25% of the total R insulation value is used outside the steel frame.