Flat roofs – 1% to 2% slope
Low slope-3:12 to 5:12
Medium Slope-6:12 to 9:12
High Slope-10:12 to 12:12
;Subtropical regions in the US where SCV roofs could apply
Here are some of the states where humid subtropical climates can be found:
* Eastern half of Texas
* Louisiana
* Arkansas
* Alabama
* Mississippi
* North Carolina
* South Carolina
* Tennessee
* Georgia
* Kentucky
* most of Florida
* Virginia
* southern West Virginia
The climate in many of these states can vary and be extreme.
Benefits (Performance ratings)
* Reduces stormwater volume (50%–85%)
* Improves stormwater quality through load reduction
* Saves water by rainwater harvesting
* Reduces heat island effect
* Lowers surface temperatures by 40–50 degrees Fahrenheit
* Energy savings can reach 15%–30%
* Reduces noise for building occupants
* Increases the life of the roof and reduces roof maintenance
* Contributes to biodiversity and creates habitats for birds and invertebrates
* Filters air pollutant particles
* Increased storm event safety
* Neighborhood diversity
* Aesthetic value
* Reduces need for retention ponds and ditches