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State: Washington

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When was your home built? *

Before 1970 After 1970

Amount of Wall Space: 2000 sq. ft.

About Wall Space

Wall space is a measure of the amount of siding needed to cover a home. This energy calculator uses a default value of 2,000 square feet which home improvement professionals refer to as 20 squares of siding (1 square of siding = 100 square feet).

2,000 square feet of siding may cover a home 1,400 - 1,700 square feet depending upon the number of doors, windows and other factors.

A home improvement professional can determine the exact amount of siding needed.



*This study assumes an existing wall R-value of 4.0 for homes built before 1970 and an existing wall R-value of 7.5 for homes built after 1970. A home improvement professional can determine your home's existing wall R-value.

Potential energy savings are based on a data modeling study performed by Architectural Testing Incorporated and are not based on actual field studies of this product. The data modeling is based on several assumptions as listed on Page Three: See Your Savings. Your actual energy savings may vary.