Asphalt roof life span
[DOC File]1 - Oklahoma
https://info.5y1.org/asphalt-roof-life-span_1_cf123d.html
2.4 50 853 Prime roof with asphalt primer, if ordered. 2.4 50 854 Install two coats of aluminum reflective to roof surface at rate of 1 gallon per 150 square feet. 2.4 60 100 Built-up roofing repairs; fibered asphalt mastic, trowel grade, with fiberglass mesh
[DOC File]A Guide to Average Life Expectancies of Home Components
https://info.5y1.org/asphalt-roof-life-span_1_b1eb4c.html
As far as house components go, a lot depends on the quality of the product, the environment they’re in, and how the components are used (or abused). As an example, the average lifespan of a “20-year roof shingle” is 14 years in a hot environment like Phoenix, Arizona but nearly 21 years in a moderate Reading, Pennsylvania.
Chapter 9 – Design Guides
Generally have a longer life span than traditional roofs. g. May be reftrofitted on an existing roof or installed as a new roof. A green roof generally weighs more than a conventional roof so load bearing capacity needs confirmation. ... If installed over a multi-layer asphalt system, the roof must be covered with a root barrier because ...
[DOCX File]Veterans Resources
https://info.5y1.org/asphalt-roof-life-span_1_7f313c.html
The life of a roof depends on local weather conditions, building and design, material quality, and adequate maintenance. Hot climates drastically reduce asphalt shingle life. Roofs in areas that experience severe weather, such as hail, tornadoes and/or hurricanes may also experience a shorter-than-normal lifespan overall or may incur isolated ...
Chapter 9 – Design Guides
If a roof appears to be in “good” condition, or is not that old (roughly less than 8-10 years for single plies and 12-15 years for built-up roofs; an infrared survey could be requested to determine if water penetrated the roof system and if the insulation is wet.
[DOCX File]DSHA - Life Expectancy (Years of Different Products/Items ...
https://info.5y1.org/asphalt-roof-life-span_1_5e4dad.html
ROOF. Age (Yrs) Poor Fair Good Excellent . Roof Type/Pitch/Flat. Number of Layers. ... Items that are beyond 50% of life expectancy shall be replaced. DSHA reserves the right to add/delete any item to the required rehabilitation. ... Asphalt, wood shingles, and shakes. 20. Wood casement. 20. Built-up roofing, asphalt. 10. Wood, single, double ...
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