Abstract: Disclosed is a roof anchor system for preventing lifting of a building roof from the walls by high winds for use in building structures having a roof constructed of wood rafters and joists supported by walls and also having a cast concrete foundation footing with at least one perimetric reinforcing bar therein. The roof rafters and joists are connected to each other and anchored to the foundation for preventing lifting of the roof from the walls during high winds. The roof anchor system comprises a plurality of identical rafter connectors, a connector being attached to every rafter of the roof. A horizontal tie bar extends through all rafter connectors on a side of the building. A plurality of identical metal T-shaped reversible couplings is evenly spaced along the horizontal tie bar and a second plurality of reversible couplings is cast within the concrete foundation footings, each coupling being spaced along the reinforcing bar directly under a corresponding coupling on the horizontal tie bar.