DJM Coating Services, Inc.

Why is SPF Energy Efficient?

• Polyurethane foams have one of the highest insulating R-values per inch of all the available products on the market today. With typical values ranging from 3.5 to 6.0 per inch, it is possible to maximize efficiency, increase space utilization and reduce operating costs, while having thinner walls and a lower profile roofs.
• Studies show that increasing the thickness of your roof insulation by 1” or more above the ASHRAE required thickness significantly reduces your energy costs.
• SPF sealants that are applied to cracks around window frames expand to fill energy-wasting (escaping) gaps around the window, which increases your buildings energy efficiency.
• Energy studies performed by Texas A & M on their own roofs show the energy cost reductions obtained by applying SPF to more than 8 million square feet of roofing paid for the cost of the retrofit in a little over three years.
• Cool roofs (using reflective plastic coverings over SPF insulated roofs) bounce sunlight and radiant heat away from a building, helping the structure stay cool and reducing energy use for cooling.

What are the benefits of SPF?

SPF is environmentally friendly, contains no formaldehyde or ozone depleting chemicals, saves energy* and reduces the use of fossil fuels, thereby reducing global warming gases. It also assists in providing good indoor air quality, requires less energy to produce than the leading insulation, and reduces the amount of energy required to transport and install it. SPF is durable, maintains physical properties over time, contributes little to the waste stream, and in a single product (depending on the formula and project) can take the place of three-four other products, including insulation, air barriers, sealants, vapor retarders, and weather barriers.

*SPF reduces energy use in the following ways:

• Has high R-value per inch (open-cell 3.5 per inch and closed-cell 6.0 per inch)
• Eliminates air infiltration
• Helps control moisture and condensation
• Reduces convective currents in walls and attics
• Eliminates wind washing
• Effective at low and high temperatures
• Provides the correct environment so that the ventilation system performs more efficiently

Reduction of Heat Gain

A major cause of heat gain in the conductive heat gain through your roof system.  The drawing above illustrates the advantages of SPF roofing system in reducing heat gain.

Energy Savings

In comparison to conventional roofing, the SPF Cool roofing System is the most energy efficient system available.  You can typically expect to recover he entire cost of your new foam roof over a short period of time. Spray polyurethane foam is the best insulating material available today.  Its closed cell nature results in the highest R-value per inch of any insulation material. The white reflective top coat also makes it the coolest under the direct sunlight (see table below).