Roofing on an Island Changes the Job
Guemes Island sits just across the ferry channel from Anacortes, and that short crossing changes more about a roof repair than most homeowners expect. Every board, box of shingles, and ladder a crew brings out has to make the ferry. Every emergency tarp job has to work around a sailing schedule instead of just driving over. And every roof on the island takes the full brunt of Rosario Strait weather with almost nothing standing between the shingles and the water — no windbreak of downtown buildings, no shelter from a hillside on the lee side of a bay. If you own a home on Guemes and you've just come through a windstorm, a repair plan built for a mainland Anacortes neighborhood isn't quite the same plan you need out here.
We work Guemes Island regularly, not as an occasional add-on trip. That matters for storm response specifically, because storm damage is a time-sensitive problem — a compromised roof that sits open for a week between the storm and the repair can turn a shingle repair into a sheathing and insulation replacement.

What Puget Sound Storms Actually Do to Guemes Roofs
Skagit County gets its share of fall and winter windstorms off the Strait of Juan de Fuca and Rosario Strait, and Guemes Island's open, low-elevation exposure means wind speeds here can run higher than what's reported for Anacortes proper. The damage pattern is fairly consistent from storm to storm:
Wind Uplift and Torn Shingles
Sustained wind gets under a shingle edge — especially one already loosened by age or a prior storm — and pulls it back or off entirely. Ridge caps and hip lines, being the most exposed edges on the roof, are usually the first to go. A few missing shingles rarely looks dramatic from the ground, which is exactly why it gets missed until water starts showing up inside.
Wind-Driven Rain
Guemes storms rarely come straight down. Rain driven sideways at 40-50 mph finds every gap in flashing, every nail that's backed out a sixteenth of an inch, and every seam where two roof planes meet. This is different damage than a slow leak — it can push water uphill under shingles and show up as a stain on a ceiling far from where the actual opening is.
Debris Impact
Fir and cedar are common on the island, and falling limbs — or in worse storms, whole trees — are a real risk. Impact damage can punch through shingles and sheathing in a single spot, which is usually obvious, but it can also crack shingles without fully penetrating, which isn't obvious until the crack lets water through weeks later.
Salt Air and Long-Term Fastener Corrosion
This is the part that's specific to island and shoreline properties. Constant salt-laden air accelerates corrosion on exposed metal — nail heads, flashing, gutter fasteners, and vent boots all age faster here than they would ten miles inland. A storm doesn't cause this corrosion, but it exploits it: fasteners that are already weakened by salt exposure fail under wind load that a fresh fastener would have held through.
Moss and Trapped Moisture
Western Washington's long wet season, made longer on Guemes by marine humidity, keeps moss and moisture-loving growth active for much of the year. Moss holds water against the roof surface, works its way under shingle tabs, and lifts them slightly — which is enough to give wind a place to start peeling. A storm-damaged roof with an existing moss problem tends to fail faster and in more places than a clean one.
Signs You Have Storm Damage Worth Inspecting
Not every storm leaves obvious damage. Walk the property (from the ground — we don't recommend homeowners get on the roof after a storm) and check for these:
- Shingles or shingle pieces in the yard, gutters, or against the house
- Visible gaps, curling, or lifted edges along the roofline, especially at the ridge
- Bent, missing, or displaced flashing around chimneys, vents, or skylights
- Dented or dislodged gutters and downspouts
- New ceiling stains, musty smells in the attic, or damp insulation
- Granules collecting in gutters or at downspout outlets (a sign of shingle surface damage)
- Any tree limb contact with the roof, even if it looks minor
If you see two or more of these after a storm, it's worth a proper inspection rather than waiting to see if a leak shows up.
What a Correct Storm Repair Actually Involves
Emergency Stabilization First
If there's an active leak or open penetration, the first job is stopping water intrusion — tarping, temporary flashing, or covering an exposed area — before anything else. On Guemes this step has to account for ferry timing; we plan emergency materials and crew scheduling around actual sailings rather than promising a same-hour arrival we can't back up with a boat reservation.
Full Inspection, Not a Spot Check
Storm damage is rarely limited to the spot that's leaking. A proper inspection covers the whole roof plane, all flashing details, valleys, and the attic interior, because wind damage often shows up in a pattern (the windward slope, the ridge, an exposed corner) rather than in one isolated place. We also check for pre-existing moss or wear that made the storm damage worse, since that affects the long-term repair recommendation.
Repair vs. Replace, Honestly
Most storm damage is repairable — replacing a section of shingles, resetting flashing, or rebuilding a small area of sheathing. We recommend a full replacement only when the damage is extensive, the existing roof is old enough that patch repairs won't blend or hold, or the underlying decking has water damage beyond a small area. We'll tell you which situation you're in and why, not default to the bigger job.
Matching Materials Correctly
A patched section that doesn't match the surrounding shingles in color, profile, and age is a cosmetic problem now and a maintenance problem later — mismatched materials weather at different rates. We source matching materials when it's possible and are upfront when an exact match isn't available due to product discontinuation or sun-fading on the existing roof.
Fastener and Flashing Upgrades Where It Counts
Given the salt-air corrosion issue specific to Guemes, we use corrosion-resistant fasteners and flashing on repair work here rather than standard-grade hardware, particularly on exposed sides of the house. It costs a little more up front and pays for itself by not being the next storm's failure point.
Repair Approach Comparison
| Situation | Typical Approach | Rough Cost Factor |
|---|---|---|
| Handful of missing/lifted shingles, no leak yet | Spot repair, re-secure or replace affected shingles | Low |
| Active leak, localized damage | Tarp, then repair shingles, flashing, and any wet sheathing | Low to moderate |
| Limb or debris impact damage | Repair or replace affected section, inspect sheathing underneath | Moderate |
| Widespread wind damage on an aging roof | Full or partial re-roof, often more cost-effective than repeated patching | Higher |
| Long-term moss damage plus storm damage | Treatment/cleaning plus repair; replacement if decking is compromised | Moderate to higher |
Exact pricing depends on roof size, pitch, material, and access — we give a firm number after inspection, not a phone estimate.
Our Process for Guemes Island Jobs
- Initial call to understand the damage and urgency, and to check ferry scheduling against your timeline
- Emergency tarping if there's active water intrusion
- On-site inspection of the roof and attic, with photos for your records and any insurance claim
- Written estimate covering the actual scope — repair or replacement — with material options
- Scheduled repair, with materials and crew brought over together to avoid multiple ferry trips and delays
- Final walkthrough so you can see the completed work before we head back to the dock
Because we already run jobs on Guemes on a regular basis, we're not pricing in a one-off mobilization charge or guessing at ferry timing — it's built into how we schedule work out there.
Insurance Documentation That Actually Holds Up
Most homeowners insurance covers sudden storm damage like wind and impact, though coverage details, deductibles, and depreciation schedules vary by policy — that's a conversation for your insurer or agent, not us. What we can do is document damage in a way that supports a claim: dated photos of the damage before any repair work begins, a written description of what happened and what it affected, and a clear scope of repair tied to that damage rather than a general roof condition report. If a wear issue like moss damage is mixed in with the storm damage, we'll separate the two in our documentation, since insurers typically distinguish sudden damage from gradual deterioration.
Why a Crew That Already Works Guemes Island Matters
Storm damage repair is time-sensitive by nature, and island logistics can turn a simple delay into a real problem. A crew unfamiliar with Guemes may underestimate travel time, show up without checking a sailing, or price the job with an unnecessary mobilization surcharge because the trip feels unusual to them. A crew that already works the island treats it as a normal part of the route — we know the ferry schedule, we plan material runs efficiently, and we're not learning the access logistics on your dime during an emergency. For homeowners on Guemes, that familiarity is part of what makes the difference between a fast, competent repair and a frustrating wait.
After the Repair: Reducing Your Next Storm's Damage
A storm repair is a good moment to address the conditions that make the next storm worse. On Guemes and across Anacortes and Skagit County generally, that mainly means moss and debris management:
- Keep gutters and downspouts clear so wind-driven rain has somewhere to go
- Address moss growth before it lifts shingle tabs and gives wind a starting point
- Trim back limbs with any roof contact, especially fir and cedar branches prone to breaking in wind
- Have flashing and fasteners checked periodically given the accelerated corrosion from salt air
- Walk the roofline visually after any significant windstorm, even if nothing seems wrong
None of this prevents storm damage outright — Guemes Island weather is Guemes Island weather — but it narrows the list of weak points a storm can find.
If you've got storm damage on a Guemes Island roof, or you want a professional look before the next system rolls through, we're glad to come out for a free, no-pressure estimate. The form below gets you on our schedule.
Anacortes Siding