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There are many wood species that can be used for outdoor decks, but not all offer the same benefits and maintenance requirements, and price and availability vary by region. As Bob Mion, of the California Redwood Association, points out, “In the Southeast you’ll find lots of Southern yellow pine; in the North Central Midwest, Western red cedar; in the California-Oregon-Washington region, redwood predominantly.” You can certainly use redwood for a deck on Cape Cod—if you pay to ship it there.
Now that you know that where you live and how much you can afford to spend will probably be the deciding factors, here are the most common natural-wood choices for deck building:
Cedar resists moisture, rot, and insect infestation, and offers more durability than many other types of wood. This hardiness is due to the fact that cedarwood will actually change its moisture content to closely match the atmosphere. Moisture is what commonly causes wood to warp and crack, especially in colder climates during freeze-thaw cycles. Using cedar may cut down on maintenance issues that can come up over time and will often add years of life to a deck.
Redwood, another premium deck wood, is easy to work with, naturally decay- and insect-resistant, and rugged enough to avoid warping, checking, and splitting. Because of its open-celled structure, redwood contains little to no pitch or resins, and maintains its natural beauty and structural integrity with easy maintenance. While redwood can be left to weather naturally, it absorbs and retains all types of finishes, making it a long-lasting wood deck choice.
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Premium woods like red cedar and redwood offer comparable levels of durability and longevity, lasting an average of 20 years. Both woods are naturally resistant to shrinking and warping. The primary difference between the two woods is color: Redwoods range from light to dark red, while cedar hues run from light brown to salmon pink.
Douglas fir is not only beautiful but also very strong. It responds well to hand- and power-tool use and, properly treated, is decay-, mold-, and termite-resistant.
Southern yellow pine, when pressure-treated, is durable, strong, and environmentally friendly. It’s worth noting that in 2003, when high toxicity was discovered in pressure-treated wood, new regulations were established. Manufacturers now treat wood with nontoxic chemicals that make these products safer as well as rot- and insect-repellant. Decking experts at The Home Depot state that “pressure-treated lumber provides greater strength and is less expensive than other deck materials. Use it to frame the structure, then choose another material for decking and railings.”
Initially, wood costs significantly less than either vinyl or composite, and if properly constructed and maintained, a wood deck will last for years. And unlike petroleum-based materials, wood is renewable if sustainably harvested.
Wood does, however, require more maintenance than other materials. A couple of times each year, it should be rinsed off, and every three or four years, it should be repainted or finished with a stain. Cedar and redwood decking may be left to weather naturally, but to make it last longer, apply a clear preservative every few years. For information on how to stain a wood deck, click here.