A patio cover usually has two warranties:
The manufacturer’s warranty.
The installer’s warranty.
We suggest being a smart consumer and doing your due diligence to compare brands. This way, you can see which manufacturer stands behind its louvered roof system. Solara has the best warranty on the market. Post support beams and rafters have a lifetime warranty. Louvers have a 10-year warranty, while mechanisms like motors and manual operators have a 15-year prorated warranty. You can read more about it in the link below.
Most manufacturers will not cover labor warranty, so that should be discussed with your installer.