Lynden Exterior Siding Built for Kendall's Weather, Not Just Its Curb Appeal
Kendall sits in the rural stretch of Whatcom County northeast of Lynden, close to the foothills and tucked among timber, pasture, and river bottom land. It's a beautiful place to own a home, and it's also a demanding place to keep one dry. Homes here deal with long stretches of driving rain off the Salish Sea weather systems, moisture-laden air that settles into low-lying and tree-shaded lots, and a moss season that can run most of the year on north-facing walls and anything shaded by conifers. Add in the salt-tinged air that moves inland across Whatcom County from Bellingham Bay and the Strait of Georgia, and you have a climate that is genuinely tough on exterior materials — not because any one factor is extreme, but because the combination rarely lets siding fully dry out.
That's the lens we use every time we install siding in Kendall: not "what looks good on delivery day" but "what still looks good and performs correctly in year twelve." This page covers what that means specifically for a Kendall siding installation — the product we use, what correct installation actually involves, and how our process works from first call to final walkthrough.
Why We Only Install James Hardie Fiber Cement
We install one siding system: James Hardie fiber cement. We don't install vinyl, LP SmartSide, Cemplank, Allura, primed spruce, or cedar lap. That's not a marketing position — it's a standard we hold ourselves to because of what we've seen happen to other materials in this exact climate over time.
Fiber cement is non-combustible, which matters in a region where wildfire smoke and ember exposure have become a real seasonal concern even in wetter counties like Whatcom. It doesn't warp, cup, or buckle the way wood-based products can when they take on repeated moisture cycles. And Hardie's ColorPlus factory finish is baked on under controlled conditions, which gives it better fade and moisture resistance than field-applied paint on site-primed products. For a property like a Kendall home that's going to sit under tree cover and damp air for months at a stretch, those differences compound over the life of the siding, not just in year one.
What We're Not Saying
Vinyl, wood, and engineered wood siding all have legitimate uses and reasonable installers who do good work with them. We simply made a call, as a company, to specialize in one system we can install to spec every time and stand behind with a real warranty — rather than being a jack-of-all-trades on four or five different products with four or five different failure modes.
What Kendall's Climate Does to Siding Over Time
| Climate Factor | Effect on Poorly-Installed or Wrong-Material Siding | How Correct Hardie Installation Addresses It |
|---|---|---|
| Driving, wind-blown rain | Forces water behind laps and around trim if flashing and gaps are wrong | Proper starter strip, flashing, and manufacturer-spec gapping shed water outward |
| Extended damp/shade periods | Wood-based sidings can swell, delaminate, or hold moisture against sheathing | Fiber cement doesn't absorb and swell the way wood or OSB-based products do |
| Long moss and algae season | Vinyl and cedar surfaces can stain and hold organic growth in grain or seams | ColorPlus finish is smoother and more resistant to organic staining, easier to clean |
| Salt-influenced coastal air | Accelerates corrosion of fasteners and fading of lower-grade finishes | Correct fastener specification plus factory-cured finish resist both |
| Temperature swings, foothill nights | Repeated expansion/contraction stresses caulked joints and unsealed cuts | Hardie's engineered dimensional stability plus sealed cut edges hold up better |
What Correct Siding Installation Actually Involves
The siding itself is only part of the system. Most siding failures we get called out to inspect in this area aren't a product problem — they're an installation problem. A correct Hardie installation on a Kendall home includes:
- Inspecting and repairing the water-resistive barrier (house wrap) before any siding goes up, not over existing damage
- Proper window and door flashing integration so water is directed out and down, never trapped behind the cladding
- Correct starter strip placement and butt joint flashing at every horizontal seam
- Manufacturer-specified fastener type, spacing, and penetration depth — not "close enough"
- Sealing and priming every field-cut edge before installation, since factory finish doesn't cover a fresh cut
- Rain-screen or proper ventilation gap where the wall assembly calls for it, especially on shaded or north-facing elevations
- Correct clearance from grade, decks, and roof lines so siding never sits in standing water or snow load
Skip any one of these steps and the siding can still look fine for a season or two. In a climate like Kendall's, the shortcuts show up later — as staining, soft spots, or paint failure that costs far more to fix than it would have to do right the first time.
Our Process for a Kendall Siding Installation
1. On-Site Assessment
We walk the exterior with you, note existing damage, moisture staining, moss patterns, and any areas where the current siding or sheathing has already taken on water. This tells us whether we're dealing with a straightforward re-side or whether there's sheathing repair to price in first.
2. Product and Line Selection
James Hardie makes several product lines and profiles — lap, board and batten, shingle-style panels — plus HZ5 and HZ10 climate-engineered formulations. We'll talk through which profile fits the home's style and which HZ specification makes sense for a property that sees Kendall's rain and humidity levels.
3. Written Scope and Estimate
You get a clear, itemized plan before any work starts — what's being removed, what's being repaired, what's being installed, and what the fastening and flashing spec looks like. No vague allowances.
4. Tear-Off and Substrate Repair
We don't install new siding over compromised sheathing or a failed weather barrier. If we find rot or water intrusion once the old siding comes off, we stop and show you before covering it back up.
5. Installation to Manufacturer Spec
Flashing, house wrap, starter strip, fastener spec, and cut-edge sealing are done to James Hardie's published installation requirements — the same requirements that back the manufacturer's warranty.
6. Final Walkthrough
We go around the home with you, point out the details of what was done, and make sure you know what regular maintenance (if any) is expected going forward.
Warranty That Actually Means Something
James Hardie backs its ColorPlus products with a strong, transferable limited warranty — a real advantage if you sell the home down the road. But a manufacturer warranty only holds up if the installation followed spec. That's why we document our installations and follow Hardie's requirements closely: it protects the warranty you're paying for, not just the siding.
What to Ask Any Contractor Before Hiring Them for Siding Work in Kendall
- Are you a certified or factory-trained installer for the product you're proposing?
- Will you show me the house wrap and sheathing condition before covering it back up?
- What's your fastener and flashing spec, and does it match the manufacturer's published requirements?
- Is the warranty from the manufacturer, from you, or both — and what voids it?
- Have you worked on homes in this specific area, dealing with this level of moisture and shade exposure?
A crew that already works Kendall and the surrounding Whatcom County foothills knows which elevations need extra attention, how the local moss and moisture patterns behave, and what corners get cut by installers who treat every job the same regardless of climate. That local pattern-recognition is worth more than a low bid from a crew unfamiliar with the area.
Signs Your Current Siding Is Already Losing the Battle
- Persistent moss or algae streaking that returns within weeks of cleaning
- Soft or spongy spots when you press on siding near the bottom edge or around windows
- Visible gaps, warping, or bowing boards, especially on shaded or north-facing walls
- Peeling or bubbling paint that keeps recurring in the same spots
- Musty smell or interior staining on walls that back up to exterior siding
Any of these on a Kendall home is worth a look sooner rather than later — moisture problems in this climate rarely stay small.
If your Kendall home's siding is showing its age, or you're planning ahead for a replacement before a small problem becomes a big one, we're happy to come take a look. There's no pressure and no cost for the estimate — just a straight assessment of what your home actually needs.