My house has a flat roof. What is the best roof system for a flat roof?

There is not one roof system that is best for all applications. Keep in mind that even if you are using the best materials, your roof system still can be installed improperly and you could end up with a leaky roof. Good workmanship, solid referrals and proper attention to detail (e. g. flashing and drainage issues) are just as important as material selection. also, maintenance plays an important role in roof system integrity and service life.

Also keep in mind low-slope roofing material manufacturers may not offer material warranties to homeowners. The only warranties you most likely will be able to obtain is from the contractor. So, it is critical you work with a professional roofing contractor and get a detailed proposal.