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Frequently Asked Questions
What wood species are used for exterior wood siding?
Western red cedar is the most popular exterior wood siding species in Canada due to its natural decay resistance, dimensional stability, and ability to take stain and paint. Douglas fir, spruce, and pine are also used in certain siding profiles. Cedar is the benchmark for longevity and appearance in wood exterior cladding.
What are the most common wood siding profiles?
Common profiles include bevel siding with wedge-shaped boards lapped horizontally, board and batten with vertical boards and narrow battens over the joints, channel siding, and shiplap. Each profile has a distinct shadow line and texture. Bevel siding is the most traditional residential profile; board and batten is popular in contemporary and farmhouse-style exteriors.
How often does wood siding need to be painted or stained?
A quality exterior paint on primed and properly prepared cedar siding typically lasts 7 to 10 years before repainting is needed. Penetrating stains last 3 to 5 years but are easier to reapply. Proper initial preparation, including back-priming all faces before installation, significantly extends maintenance intervals.
What is back-priming and why is it important for wood siding?
Back-priming is the application of primer to the back face and edges of siding boards before installation. It seals the wood against moisture absorption from behind, which is the primary cause of paint failure and rot. All wood siding should be back-primed before installation; skipping this step significantly shortens the life of the exterior finish.
Can wood siding be installed over existing siding?
It depends on the existing condition and type of existing siding. Installing over solid, structurally sound material can work if the moisture management details are correct. In many cases, removing old siding and addressing the wall assembly properly is the better long-term approach.