Torch-down roofs in San Diego are used on low-slope areas

https://my-home-blog.s3.us.cloud-object-storage.appdomain.cloud/san-diego-hot-mop-roofing-pros-cons-costs.html

Torch-down roofs in San Diego are used on low-slope areas, where reroofing rules allow exceptions to typical slope limits when the roof still provides positive drainage.