Buildings Historical Structures

State parks and forests contain more than 4,800 buildings.

This includes visitor centers, offices, maintenance and storage buildings, education buildings, pavilions, cabins, bath houses, and modern and rustic bathrooms.


All these need roof repair or replacement on a regular schedule.

Depending on the type of roofing material, a roof can last on average 20-40 years for asphalt shingles, 30 years for wood shingles, and 40-50 years for flat rubber roofs.


Periodic maintenance for heating and cooling (HVAC) systems, wiring, plumbing, carpeting, and painting is also needed.

For instance, the typical lifespan of an HVAC system with routine maintenance is 25 years, but that can be reduced to as little as 10 years without adequate maintenance.


SFGate. The Average Life of Roofing. (Accessed on 7/14/2017)

Comfort Pro Heating & Air Conditioning. What is the Life Expectancy of my HVAC System? (Accessed on 7/14/2017)


20-40 years

is the average lifespan for asphalt shingles

30 years

is the average lifespan for wood shingles

40-50 years

is the average lifespan for flat rubber roofs

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