Redwood and cedar naturally contain tannin (a chemical that gives the products their color), which keeps the wood insect resistant. Since Californian redwood has a higher level of tannin, it could be more rot resistant than cedar.
Redwood has natural properties that make it last longer than cedar. You can expect a redwood fence to last 25 years or more, while a cedar fence will likely last around 15 years. Treated cedar may last longer. Redwood can absorb moisture without warping and is naturally fire-resistant.
Durability. Both species are considered softwoods, but on the Janka hardness scale redwood is 23% harder than western red cedar. Both are very popular choices for decking and siding however, so whether you need that extra hardness is up to you and what your project requires..
Redwood, on the other hand, is more resistant to water damage than Cedar due in part to its higher density as well as the fact that it has fewer pitch pockets (where moisture can collect). This makes it an ideal choice for exterior projects where moisture is more likely.
So Which Wood Type Lasts the Longest Outdoors? The general consensus is for hardwoods, such as ipe and teak. Since these species are extremely rot-resistant and durable, they have the best chance at a long life outdoors. These hardwoods are very durable and can last decades with minimal maintenance.
Wrought Iron is one of the most durable and longest lasting type of outdoor furniture available, many times lasting decades. Truly an investment that keeps on giving, wrought iron furniture is also the heaviest frame. O.W. Lee's, Wrought Iron San Cristobal, Lifetime= 25+ years.
The Misconception About Redwood and Rot
No. Redwood gets its rep for being tough because of tannins, a natural compound that helps fight off decay. Think of tannins as redwood's built-in armor.
Seal your redwood deck every 1-2 years, depending on exposure to sunlight, weather conditions, and wear to ensure optimal protection and appearance.
While there is a slight price difference, there is much greater value in the redwood because of its durability and cleaner look. This means that redwood fencing will be more expensive than cedar, so if you're working with a smaller budget, cedar can be an interesting alternative.
Redwood is more durable and moisture-resistant than cedar, making it a better choice for decking and high-traffic areas. Cedar is more affordable than redwood and has a natural resistance to rot and insects, which makes it a good choice for those on a budget.
Furthermore, its high stability makes it less likely to warp or cup over time. Typically, redwood decks last for about 30 years. However, if homeowners skip out on refinishing and sealing on a regular basis, redwood can blacken and turn more silver-grey in color than reddish-brown.
Our two most popular colors for redwood are Amaretto and Western Cedar. We recommend the Timber Oil product to use for a redwood deck stain because it is a deep penetrating finish. This is ideal for a porous lumber like redwood.
Redwood has great traits. It resists rot better than most woods. But it's not invincible. Sun and moisture can still harm it.
Alaskan Yellow Cedar is another attractive option with a uniform, light yellow color and even texture. It's harder than most softwoods, though in terms of longevity, redwood decking and cedar decking are comparable as both are durable, quality woods.
Left untreated, redwood weathers to a dark “driftwood” grey only when exposed to rain. In sheltered locations, where oxidization is not subject to “rinsing” precipitation, redwood typically weathers to a dark brown.
-- Clean and treat your deck with a preservative every two years. -- Remove any mildew by pressure-washing thoroughly. -- Use a pressure washer with at least 1,500 psi. -- Use the fan setting on the nozzle and keep it moving to prevent a ripple effect.
Oil-based sealants are often recommended for redwood for their deeper penetration and longer-lasting protection. Applying sealant correctly involves cleaning the deck, applying the sealant evenly, and allowing adequate drying time.
Termites also tend to avoid specific species of trees such as redwoods, yellow cedar, Laotian teak, and cypress. However, these types of wood are not as long-lasting as treated lumber.
Redwood – with a janka rating of 450lbs – is about 23% stronger than cedar (janka rating of 350lbs). Whether or not the extra strength is necessary for your project is up to you, but clearly redwood is more durable and stable than cedar in general.
Outdoor materials like steel, aluminum, wrought iron or all-weather wicker can survive all types of climates and continue looking good for far longer than other materials such as wood, which can corrode and warp over time due to humidity and moisture in some climates.
Which Wood Lasts the Longest? Teak wood easily lasts the longest when used for outdoor furniture or decking. When properly maintained, it can last for the entirety of your life and years after.