Cantilevered Patio Extension in San Tan Valley, AZ Project Description: Royal Covers built a cantilevered patio extension with Alumawood Lattice components to extend the patio area of a home in San Tan Valley, AZ. Call (480) 926-2300 for a free Backyard Patio cover quote Get Free local quote ← Solid Pergola over Built In Grill 7 Ways to Create a Dog-Friendly Backyard →