Roof Life Cycle Cost Analysis

Lee 2004 compared green roof and traditional roof life cycle costs over 60 years for a single roof in oregon.

Roof life cycle cost analysis.

Life cycle cost analysis energy cost represent the largest of the financial obligations for building owners and often exceed the installed roof system cost. A property owner makes the decision to get a loan to install a 30 000 photovoltaic rooftop system. The premium white membrane roof will cost 46 600. This analysis included extended roof life energy savings and stormwater fee reduction in the economic benefits that the green roof provided.

They found the green roof to be 7 more expensive than the conventional roof over this time. It has been used successfully by roofing material manufacturers to position more costly but higher valued materials over lower cost less durable systems. According to an extensive study performed by a leading roof consultant due to the shorter life span of an asphalt roof as well as uv degradation the asphalt roof will cost 23 300 in maintenance costs over 20 years where the white roof will only run you about 5 800. These hidden costs can be minimized through a quality roof design and installation that incorporate proper insulation r values and roof membrane color.

Over 20 years the premium black roof with a white granular surface will cost an estimated 115 220. Life cycle cost analyses have become valuable tools to the construction industry as a better method of measuring the value of a product over its service life.