The certified design is built specifically to meet or exceed your local state building code requirements. This pertains to the wind and snow load ratings on our products. All products are engineered but the certified design comes with a set of blue prints for easy permitting. This design comes with our certified warranty and has extra braces and anchors added to it.
The non certified design is engineered and designed to meet your areas minimum requirements. This design does not come with the blue prints and is backed by our workmanship warranty.