How is siding repair different from general exterior repair work?

Siding repair specifically deals with the cladding system itself — the boards or panels, seams, flashing, and fasteners that keep water out of the wall. It's a narrower, more specialized job than general carpentry because getting the water-management details wrong at a seam or joint can cause more damage than the original problem.

What should I ask a contractor before hiring them for siding repair?

Ask whether they'll inspect for the underlying cause before quoting a fix, not just patch the visible damage. Also ask how they handle matching existing material and fasteners, whether they carry liability insurance, and whether they'll put the scope of work in writing before starting.

Do you only repair James Hardie siding, or will you work on other brands?

We repair whatever siding is already on the home, including vinyl, LP SmartSide, and cedar. Our own installations are James Hardie fiber cement exclusively, but a repair job matches what's already there rather than pushing a different product.

Does James Hardie siding really hold up better once it's damaged?

Fiber cement doesn't absorb and swell the way engineered wood or solid wood does, so damage on a Hardie wall is almost always at a caulked seam or joint rather than in the board itself. That tends to make repairs more isolated and predictable compared to materials with an absorbent core.

Does it matter that you're based in Lynden and not Abbotsford itself?

Not for response time or familiarity — Abbotsford is a short drive across the border and a regular part of our service area, so we know how this region's rain and moss season affects siding. We handle the border logistics as routine scheduling rather than a special trip, so it doesn't add delay or complication to the job.

Abbotsford, BC Siding Repair Services | Lynden Crew

Why Abbotsford Siding Takes a Beating

Homes on the Abbotsford side of the border deal with the same weather pattern that grinds down siding across the Fraser Valley and Whatcom County: long stretches of driving rain, salt-laden air moving in off the coast, and a moss season that can run most of the year in shaded, north-facing spots. None of that is dramatic on its own. The damage shows up slowly — a soft spot behind a downspout, a seam that's opened up just enough to let water track behind the cladding, a patch of siding that stays damp two days after everything else has dried out. By the time a homeowner notices, the problem has usually been building for a season or two.

Moss and Algae Growth

Moss doesn't just look bad. It holds moisture directly against the siding surface, keeps that surface from drying between rain events, and — on wood-based products especially — creates the exact conditions that lead to soft, rotting boards. Left alone through a wet Whatcom County winter, a moss patch can go from a cosmetic nuisance to a repair job in a single season.

Moisture Behind the Cladding

The more serious issue is almost never the siding surface itself — it's what's happening behind it. Caulk fails, flashing gets installed wrong or wears out, a seam opens at a butt joint, and water finds its way behind the cladding where it can sit against the sheathing. In a climate that gets this much sustained rain, a small gap that would be a non-issue somewhere drier becomes a real entry point here.

Signs Your Siding Needs Repair, Not Just a Fresh Coat of Paint

A lot of siding problems get masked with paint or caulk for a year or two before they're addressed properly. Here's what actually signals a repair is due:

Soft or spongy spots when you press on the siding, especially near the bottom courses or under windows
Visible gaps at seams, corners, or where siding meets trim, window frames, or the roofline
Paint that's bubbling, peeling, or failing in one specific area rather than evenly across the wall
Persistent moss or algae staining that comes back within a season of cleaning
Warped, cupped, or bowed boards, particularly on shaded or north-facing walls
Visible daylight or drafts from inside near an exterior wall
Discoloration or staining on interior drywall near an exterior wall, which often means water has already gotten through

What a Correct Siding Repair Actually Involves

Diagnosing the Cause First

The single biggest difference between a repair that lasts and one that fails again in a year is whether the cause got fixed, not just the symptom. Swapping a rotted board without finding and correcting the flashing or caulk failure that let water in means the replacement board rots too — usually faster, since it's now sitting against the same wet framing. A proper repair starts by pulling back enough of the surrounding material to see what's actually happening behind it: is the water source a failed seal, bad flashing, a gutter overflow point, or grade/drainage pushing moisture up from below.

Matching Materials and Fasteners

Repairs also need to match the existing siding correctly — profile, reveal, and fastening pattern — or the patch reads as an obvious mismatch and can create its own new water path. On fiber cement in particular, using the wrong fastener, spacing, or caulk at a repair joint undermines the manufacturer's warranty on the rest of the wall, even if the original installation was done right.

Materials We Find on Abbotsford-Area Homes

Repair calls in this area come in on a mix of siding types, and each behaves differently once moisture gets behind it:

Material	Typical repair issue	Moisture behavior
Vinyl	Cracking, warping, panels popping loose in wind	Doesn't rot, but rarely stops water from tracking behind it — the problem is usually what's underneath
LP SmartSide / OSB-based	Edge swelling, soft spots at seams and bottom courses	Engineered wood core swells and softens once water gets past the coating
Cedar	Cupping, splitting, moss staining, rot at butt joints	Absorbs moisture directly; needs ongoing maintenance to keep ahead of it
James Hardie fiber cement	Caulk/flashing failures at seams, impact damage	Cement core doesn't absorb or swell; damage is almost always at a joint, not the board itself

Our Repair Process, Start to Finish

On-site inspection of the damaged area and a check of surrounding sections for related issues (flashing, caulk, gutters, grade)
Removal of enough surrounding material to expose the sheathing and confirm there's no hidden rot or ongoing moisture source
Repair or replacement of any compromised sheathing or framing before new siding goes back on
Correction of the actual cause — re-flashing, re-sealing, or adjusting drainage — not just patching over it
Installation of matching or compatible siding material, fastened and sealed to spec
Final check of surrounding seams, trim, and paint lines so the repair blends in rather than standing out

Repair vs. Replace: Making the Right Call

Not every damaged section needs a full re-side, and not every repair is worth doing on its own. The right call usually comes down to how much of the wall is affected and what's driving the damage:

Factor	Leans toward repair	Leans toward full replacement
Extent of damage	One or two isolated sections	Damage spread across multiple walls or elevations
Siding age	Newer, otherwise sound siding	Original siding already near end of service life
Underlying cause	A single, fixable source (flashing, caulk, one gutter)	A systemic issue — poor original installation, wrong material for the exposure
Material match	Product is still available or a close match exists	Discontinued profile/color, patch would be visibly mismatched

We'll always give a straight answer on which side of that line a given job falls on — a repair that's genuinely enough to solve the problem, not an upsell toward a full re-side that isn't needed yet.

Why We Standardized on James Hardie Fiber Cement

We repair whatever siding a home already has — vinyl, LP, cedar, or Hardie — because that's what's on the wall and a good repair should match what's there. But when a repair call turns into a "this whole wall needs to come off" conversation, or when a homeowner asks what we'd put up ourselves, the answer is James Hardie fiber cement, and only Hardie. We don't install LP SmartSide, vinyl, Cemplank, Allura, primed spruce, or cedar as a full siding system.

That's not a knock on every one of those products across the board — vinyl is inexpensive and low-maintenance in the right application, cedar looks great and plenty of people are willing to keep up with it, and engineered wood products have their place. What pushed us to standardize on one material is what we see on repair calls, over and over, in a climate like this one: engineered wood cores that swell once moisture gets past the surface coating, wood siding that needs ongoing maintenance to outrun moss and rot, and vinyl that survives fine on its own but does nothing to stop water once a seam opens. Hardie's fiber cement core doesn't absorb water the way wood-based products do and isn't combustible, its factory-applied ColorPlus finish holds up without repainting on the same schedule, and the HZ5 product line is engineered specifically for wetter, harsher climates like the Pacific Northwest and Fraser Valley. It also carries a strong transferable warranty when installed to spec — which is the whole reason installation quality matters as much as the product itself.

Why a Lynden Crew That Already Works Abbotsford Matters

Abbotsford is close enough to Lynden — a short drive across the border crossing that connects Whatcom County to the Fraser Valley — that it's a regular part of our service area, not a special trip. That matters for a few practical reasons. We're already familiar with how this specific stretch of coastal, rainy climate treats siding differently than it would further inland, so we're not guessing at what's causing damage on a given wall. We also handle the logistics of crossing the border for material and crew on a routine basis, which keeps scheduling straightforward instead of being a one-off complication that adds cost or delay. And because we're repairing siding in this exact climate on both sides of the border regularly, we see the same failure patterns often enough to recognize them fast — which shortens the diagnostic part of the job and gets a homeowner an accurate answer sooner.

If you've got a section of siding that's soft, gapped, moss-stained, or just not holding up the way it used to, we're glad to take a look. Fill out the form below for a free, no-pressure estimate — we'll tell you honestly whether it's a repair or something bigger, and what we'd recommend either way.