ABOUT US ENGINEERED WOOD TRUSSES, WALL PANELS, FLOOR SYSTEMS, ENGINEERED WOOD PRODUCTS & HARDWARE Years of quality products and service to our customers makes Ontario Truss and Wall second to none. Among our many functions, Ontario Truss and Wall manufactures the highest quality wood roof trusses for the residential, commercial and agricultural sectors. We supply engineered floor systems, and provide engineered beams for supporting roof and floor loads. We are committed to maintaining an excellent customer relationship by always providing quality service and products that our customers can count on. Free Consultation Please contact us for your free quote. No job is too big or too small.