Roofing Life Cycle Costs with Maintenance

Built-Up Roof (BUR) vs. Single-Ply

Wheatridge Middle School Roof B

BUR Single-Ply Year 1: Replacement Cost $68,000 $40,000 Years 1-5: Maintenance Cost* $ 3,574 $ 4,293 Years 6-10: Maintenance Cost* $ 3,763 $ 4,754 Years 11-15: Maintenance Cost* $ 3,961 $ 5,264 Year 15: Replacement** $ 0 $62,311 Years 16-20: Maintenance Cost* $ 4,169 $ 6,688 Year 20: Restoration*** $20,000 $ 0 Years 21-25: Maintenance Cost* $ 4,626 $ 7,404 Years 26-30: Maintenance Cost* $ 4,869 $ 8,202

Maintenance cost over 30 years $ 24,962 $ 36,605 Cost per year: $ 3,765 $ 4,631 Life Cycle Cost: $112,962 $138,916

Assumptions: Inflation Included Annually: 3%

* NRCA Recommended Annual Maintenance Cost: 1% for BUR (of original cost) 2% for Single-Ply (of original cost)

** Assuming the single-ply roof lasts 15 years.

*** Assuming the BUR is restorable in 20 years.