Since 2004, Decks-Terity has been serving Western Canada with photo - composite deckingmaintenence free decking solutions. With offices in Medicine Hat, Lethbridge and Calgary, we offer over 50 years combined experience. Decks-Terity is committed to providing quality and superior service to our customers with the installation of vinyl decking, powder coated aluminum railings, wind walls, screen rooms, aluminum patio covers, composite decking, pressure treated deck boards, cedar deck boards, quality stone siding and fencing as well as deck construction.