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  • Smart products for smart people    .   .   .   .   .   
  • ABC's "Extreme Home Makeover" selects Evergreen    .   .   .   .   .   
  • Green building solutions that work    .   .   .   .   .   
  • Foam - Efficient − Healthy - Smart    .   .   .   .   .   
  • Energy renovations save money    .   .   .   .   .   
  • Tax incentives support green building    .   .   .   .   .   
  • Save energy − Save money − Be Smart    .   .   .   .   .   
  • Evergreen has an energy renovation program    .   .   .   .   .   
  • Reduce energy use & achieve significant savings    .   .   .   .   .   
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Costs & Savings

As a high-performance weatherization product, spray foam insulation is more expensive than fiberglass or other forms of insulation. Evergreen believes the additional cost of foam insulation can be recouped through the significant energy savings associated with the product.

The following table illustrates the potential costs and savings of spray foam insulation compared to fiberglass insulation. These numbers are derived from materials provided by Demilec USA and Chase Bank based on the Home Energy Rating System (HERS) efficiency rating of various properties.

 

Diagram: Cost Savings
Source: Demilec USA

In Demilec and Chase Bank's analysis, the additional cost of installing foam is included in a slightly larger mortgage. The resulting monthly mortgage payment is then compared with the potential savings in monthly utility bills from the superior performance of spray foam.

According to this analysis, the additional cost of installing foam could be as high as $8,750 (i.e., $12,250 - $3,500 = $8,750). The resulting potential return period is approximately 4.1 years (i.e., $8,750 ÷ ($180 monthly energy savings * 12 months)).

The potential savings of using superior construction materials such as spray foam insulation would recur every month for the life of the structure.

 

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