Blaine Siding Cedar Has a Real Appeal
We get asked about cedar siding often, and it's easy to see why. Real wood grain, a warm natural look, and a material that's been used on homes in the Pacific Northwest for generations. Western red cedar is native to this region, it's a renewable resource, and when it's freshly finished it looks the part of a classic Whatcom County home. There's nothing wrong with wanting that look.
But we don't install cedar siding on the homes we work on, and we think homeowners in Blaine deserve a straight answer about why before they commit to it.
The Maintenance Cedar Actually Requires
Cedar is wood, and wood moves with moisture. It absorbs and releases humidity constantly, which causes boards to swell, shrink, cup, and check over time. To keep that in check, cedar siding needs a quality stain or sealant reapplied on a real schedule — typically every 3 to 5 years, sometimes sooner on sides of the house that take the most weather. Skip a cycle or two and the wood starts absorbing water it can't shed fast enough, and that's when problems start underneath the surface, not just on it.
Blaine sits right on Semiahmoo Bay, at the edge of the Strait of Georgia, which means homes here deal with a steady dose of salt-laden air on top of everything else the marine climate throws at a house. Salt air accelerates the breakdown of finishes and speeds up moisture cycling in wood siding. Add in Whatcom County's driving rain — wind-driven rain that gets pushed sideways into wall assemblies rather than just falling straight down — and cedar's protective finish takes a harder hit here than it would somewhere drier or more inland.
Moss, Algae, and the Wet Season
This area's moss season runs long. Mild, wet winters and shaded lots near the water create ideal conditions for moss and algae to take hold on any organic material, and cedar is exactly that — organic material. Once moss establishes itself on a wall, it holds moisture directly against the wood surface, which is the opposite of what you want. Cleaning it off without damaging the finish takes care and repetition, and on north-facing walls or heavily treed lots, it can become a recurring fight rather than a one-time chore.
Rot, Insects, and What Happens When Maintenance Slips
Cedar has natural resistance to decay compared to some other softwoods, but "resistant" isn't "immune." Once the factory or field-applied finish starts to fail — from UV exposure, salt air, or just age — the wood underneath is exposed to moisture again, and that's when rot gets a foothold, especially at butt joints, corners, and anywhere water can sit. Wood siding is also a food source and habitat for carpenter ants and other wood-boring insects, which is one more thing to watch for over the life of the siding.
None of this means cedar is a bad material. It means cedar asks a homeowner to sign up for an ongoing maintenance relationship with their siding — refinishing, cleaning, spot repairs — and that upkeep has to happen on schedule to protect the investment. In our experience, most homeowners don't want that job, and many don't find out how demanding it is until years after installation.
There's Also the Fire Question
Cedar is combustible, like any wood siding product. That's a straightforward physical fact, not a knock on the material — it's just part of the honest comparison homeowners should weigh alongside appearance and cost.
Why We Install James Hardie Instead
We standardized on James Hardie fiber cement siding because it's engineered to hold up in exactly the conditions Blaine deals with. It's non-combustible. It doesn't absorb moisture and swell the way wood does, so it holds its shape and its seams stay tighter over time. Hardie's ColorPlus factory-applied finish is baked on under controlled conditions and backed by its own finish warranty, which means no refinishing cycle to manage — a real advantage against salt air and UV exposure near the water.
Hardie also builds specific product lines engineered for different climate zones, and we install the HZ formulations suited to the Pacific Northwest's wet, marine conditions. Combined with a strong transferable product warranty, that's a siding system built for the long haul rather than one that needs a maintenance plan to survive it. It doesn't fully eliminate moss growth on a shaded wall — nothing does — but it holds up to cleaning and moisture exposure far better than bare or finished wood over the decades a homeowner actually owns the house.
If you're weighing cedar against fiber cement for a home in Blaine, we're happy to walk through both honestly, including the upkeep involved, before you decide anything. Reach out for a free, no-pressure estimate and we'll give you our straight opinion on what your house needs.