# Roof Geometry for Wind Mitigation **URL:** \ **Category:** Florida and SUNachi Inspectors\ **Created:** [June 3, 2022, 12:10am UTC](https://forum.nachi.org/t/roof-geometry-for-wind-mitigation/216379 "2022-06-03T00:10:14Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![ggeorge2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/ggeorge2/32/57038_2.png) [@ggeorge2](https://forum.nachi.org/u/ggeorge2)\ **Post date:** [June 3, 2022, 12:10am UTC](https://forum.nachi.org/t/roof-geometry-for-wind-mitigation/216379/1 "2022-06-03T00:10:14Z")
Need some clarification. On the Florida Wind Mitigation report under “Roof Geometry” it says “Hip roof with no other roof shapes greater than 10% of the total roof system perimeter”. In one area this roof has a hip perimeter that goes to a flat roof about 3 ft up. Is it just a complete Hip roof or should that area be considered an “other roof shape” at that perimeter? Thanks ![IMG_1041](https://global.discourse-cdn.com/internachi/original/4X/c/3/5/c358c7d551af20ff0d183af498d62ff385b3d25b.jpeg) ---
**Author:** ![jjonas](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jjonas/32/301755_2.png) [@jjonas](https://forum.nachi.org/u/jjonas)\ **Post date:** [June 3, 2022, 12:57am UTC](https://forum.nachi.org/t/roof-geometry-for-wind-mitigation/216379/2 "2022-06-03T00:57:00Z")
IMO… that’s NOT a “flat” roof… it’s a “low slope” roof. Big difference! ---
**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\ **Post date:** [June 3, 2022, 12:57am UTC](https://forum.nachi.org/t/roof-geometry-for-wind-mitigation/216379/3 "2022-06-03T00:57:18Z")
Welcome back to our forum, Greg!..enjoy participating. 😃 ---
**Author:** ![bcawhern1](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/bcawhern1/32/408713_2.png) [@bcawhern1](https://forum.nachi.org/u/bcawhern1)\ **Post date:** [June 3, 2022, 1:04am UTC](https://forum.nachi.org/t/roof-geometry-for-wind-mitigation/216379/4 "2022-06-03T01:04:25Z")
I dunno, but that roof wants to leak! 😉 ![image](https://global.discourse-cdn.com/internachi/original/4X/3/b/1/3b17d3fe30f499bff901f1b2ecdf84d1f07d192f.jpeg) ---
**Author:** ![mgoldenberg](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mgoldenberg/32/89265_2.png) [@mgoldenberg](https://forum.nachi.org/u/mgoldenberg)\ **Post date:** [June 3, 2022, 1:08am UTC](https://forum.nachi.org/t/roof-geometry-for-wind-mitigation/216379/5 "2022-06-03T01:08:46Z")
The 1802 form clearly states Hip roof with no other roof shapes greater than 10% of the total roof system perimeter I do not see that as part of the perimeter ---
**Author:** ![jsmith1081](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jsmith1081/32/211287_2.png) [@jsmith1081](https://forum.nachi.org/u/jsmith1081)\ **Post date:** [June 3, 2022, 12:10pm UTC](https://forum.nachi.org/t/roof-geometry-for-wind-mitigation/216379/6 "2022-06-03T12:10:43Z")
_Taken from the wind mitigation class material_ > When measuring the perimeter, measure around the roof as a two dimensional object, such as from an aerial view. When measuring other roof features, include non-hip features that are not part of the perimeter. > > ![image](https://global.discourse-cdn.com/internachi/original/4X/d/b/4/db408e0917d8f8d13a21eee4419bd2c5bfa86e22.jpeg) > The inspector should be sure to look carefully and include all roof surfaces in calculations. > > Even though an inspector would find it difficult to see this roof (pictured above) from the ground, this roof was actually classified as flat. With that said, I would think that the flat section would take away the hip on this roof.