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Wood Shingles

Wood Shingles are made from Red Cedar as it is highly resistant to decay and corrosion. Wood shingles are categorized into three kinds, one, two and three. The number one, is more recommended for roofing because they are more durable, the second and third are better for sidings.

Wood roofing materials have historically had poor fire resistance and a limited variety of colors. They are susceptible to infestations from termites and wood rot, and have higher installation costs, and insurance companies require higher rates because of their vulnerability to fire.

Some woods have natural durability. The heartwood of old-growth western red cedar is rated as extremely durable. However, the generally small amount of sapwood associated with this species is not durable. There is general consensus that some second growth timber, even from a decay-resistant species, is not as durable as the old-growth timber. Nevertheless, the durability of any wood decreases as rain or other sources of moisture leach extractives from the wood. For these reasons, the use of a "durable and treated" wood for shingles is increasing.

Besides red cedear, other woods can also be used, if the shingles are properly treated. Using preservative-treated or naturally durable wood for shingles should result in a roof free of decay for 25 to 30 years.

Weathering is erosion from sun, wind, debris, and precipitation. All wood is subject to weathering. Shingles are often left to weather naturally and, depending on climatic conditions, the wood turns silver, dark gray, or dark brown. Weathering can be reduced by applying finishes, especially those with pigment. Some treatments retard both decay (preservatives) and weathering (finishes).