Welcome to Berco Redwood Redwood lumber, Trex decking, pressure-treated lumber and related products for contractors and homeowners in the greater Sacramento area since 1982 For over 30 years, Berco Redwood has been providing building materials for decks, fences, patio covers and landscape projects throughout Northern California. In addition to lumber, we have the connectors, hardware, finishes and advice on how to best use them for your needs.