Orcas Island Siding Custom Windows Built for Life Near Obstruction Pass
Homes around Obstruction Pass sit close to the water and under heavy tree cover, which means they take a different kind of beating than a house in town. Salt-laden air moves in off the water, driving rain comes in sideways during winter storms, and the shade from surrounding fir and cedar keeps everything damp longer than it should be. Windows are usually the first thing to show it — swollen sashes, pitted hardware, fogged glass, and trim that's gone soft at the corners. This page is about what it actually takes to replace or custom-build windows for a home in this specific pocket of Orcas Island, not a generic rundown of window options.
What This Climate Does to a Window Over Time
San Juan County's marine climate is milder than most of Washington, but "mild" doesn't mean easy on materials. Three things work against windows here specifically:
Salt Air
Even homes a few hundred feet back from the shoreline get salt-carrying moisture in the air, especially with any exposure to wind off the water. Salt accelerates corrosion on exposed metal — hinges, cranks, screen frames, and lower-grade aluminum components all suffer faster here than they would inland. It also breaks down some finishes and coatings ahead of schedule.
Driving Rain
Storms on this side of the island often come with real wind behind them, which pushes rain sideways into wall assemblies instead of letting it run straight down. A window that's fine in a calm rain can still leak under wind-driven rain if the flashing and sill pan weren't detailed for that condition. This is the single biggest cause of hidden rot we find behind older windows in this area.
Moss Season
The tree canopy around Obstruction Pass keeps a lot of the ground and lower wall areas shaded and slow to dry. That's ideal for moss and algae growth on window sills, trim boards, and anywhere water sits instead of shedding. Over years, that constant dampness is what actually rots wood components — the moss is just the visible sign of it.
When "Custom" Isn't Just Marketing
A lot of window companies use the word "custom" to mean "we'll paint it whatever color you want." For homes in this area, custom often means something more literal:
- Older homes and cabins with openings that don't match any stock size
- Additions or renovations where the rough opening was framed by hand, not to a modern spec
- Log, timber-frame, or post-and-beam construction with irregular settling over time
- Waterfront lots where window placement is dictated by view lines rather than standard elevations
- Replacement projects where the old frame is rotted enough that the true opening size has to be re-measured, not assumed from the original
On a property like this, showing up with a stock-size window and trying to make it fit is how you end up with shims, caulk overload, and a leak two winters later. Custom sizing done right starts with an accurate as-built measurement of the actual opening, not the nominal size on the old label.
Frame Material: What Actually Holds Up Here
Every frame material has trade-offs. For homes exposed to salt air and shade-driven dampness, some hold up noticeably better than others.
| Material | Salt Air Behavior | Moss/Moisture Behavior | Maintenance |
|---|---|---|---|
| Vinyl | Doesn't corrode; UV can chalk over many years | Doesn't absorb moisture; easy to rinse clean | Low — occasional wash |
| Fiberglass | Very stable; resists pitting and corrosion | Doesn't absorb water; holds paint well if refinished | Low |
| Wood (unclad) | No metal corrosion, but finish needs upkeep near salt spray | Absorbs moisture; needs sealed finish and good drainage detailing | Highest — periodic refinishing |
| Aluminum-clad wood | Cladding protects the wood, but lower-grade cladding can pit near the water | Interior wood still needs interior humidity control | Moderate |
| Bare aluminum frame | Prone to pitting and corrosion in salt air over time | Doesn't rot but can trap condensation | Moderate to high near shoreline |
We don't push one material as "the only right answer" for every home — a lot depends on your home's style, your budget, and how close you actually sit to the water. What we won't do is install a frame material that we know is a poor match for a shoreline-adjacent property just because it's cheaper up front. That's a conversation we have honestly during the estimate, including what the manufacturer's warranty does and doesn't cover in a marine environment.
Getting the Water Management Right
Wind-driven rain doesn't care how good the window itself is if the installation around it fails. The parts that matter most, and that get skipped most often on rushed jobs:
Sill Pans
A sloped, sealed sill pan under the window gives any water that gets past the frame a way out instead of a place to sit and soak into the framing.
Flashing Sequence
Flashing has to be layered correctly with the house wrap or building paper — sill flashing first, side flashing over that, and head flashing lapped over the top — so water is always directed outward and downward, never trapped behind a layer.
Weep Paths
Any window with a drainage track needs clear weep holes so water that collects in the frame can actually get out instead of pooling against wood trim or sheathing.
Sealant Selection and Placement
Sealant is a backup to good flashing, not a replacement for it. We use it where it belongs — not as a way to cover up a shortcut in the flashing detail.
Our Process for Obstruction Pass Projects
- On-site assessment — we look at existing window condition, sill and header framing, and any signs of past water intrusion before recommending anything.
- Precise measurement — actual opening dimensions, not catalog assumptions, especially on older or hand-framed openings.
- Material and lead-time planning — custom units are ordered to spec, and we build in realistic lead time for fabrication plus delivery to the island.
- Logistics for island delivery — materials have to be scheduled around ferry availability, which we account for up front so your project timeline is realistic instead of guessed at.
- Removal and rot inspection — when the old window comes out, we check the framing underneath for hidden moisture damage before the new unit goes in.
- Installation with full flashing detail — sill pan, flashing sequence, insulation, and interior/exterior trim finished properly, not just caulked and painted over.
- Final walkthrough — operation, sealing, and cleanup checked with you before we consider the job done.
Living With Windows in a Moss-Prone, Salty Environment
Even the right window and a correct install still need some basic upkeep in this environment. A simple seasonal routine goes a long way:
- Rinse salt residue off frames and glass a few times a year, especially after windy storms off the water
- Clear moss and organic debris from sills and tracks before it holds moisture against the frame
- Check weep holes each fall to make sure they're not clogged with needles or moss before the rainy season
- Lubricate hardware (hinges, cranks, locks) periodically to slow salt-related corrosion
- Look at exterior caulk lines once a year for cracking or separation, and have gaps re-sealed before winter rain arrives
- Keep nearby vegetation trimmed back where it's shading a window enough to keep it perpetually damp
Cost Factors for Custom Window Projects Here
| Factor | Why It Affects Cost |
|---|---|
| Non-standard sizing | Custom-fabricated units cost more than stock sizes and take longer to arrive |
| Frame material | Fiberglass and clad-wood options generally cost more than vinyl but hold up better near the shoreline |
| Existing rot or water damage | Framing repair before the new window goes in adds labor and material |
| Number of openings | Per-window cost usually drops slightly as project size increases due to shared setup and delivery |
| Access and site conditions | Tree cover, slope, or waterfront access can affect scaffolding and staging needs |
| Delivery logistics | Ferry scheduling for custom units can affect timeline more than raw cost, but rush requests do add expense |
We give straightforward, itemized estimates so you can see where the money is actually going, rather than one flat number with no explanation behind it.
Why Local, Island-Based Experience Matters
Window installation on Orcas Island isn't the same job as installation on the mainland, even with identical materials. Anyone who doesn't regularly work San Juan County will underestimate ferry-dependent delivery windows, misjudge how tree cover and shade affect a specific wall's drying time, or specify hardware that isn't rated for the salt exposure a home near Obstruction Pass actually sees. A crew that works this area routinely already knows how to plan around the ferry schedule, has a feel for how each part of the island handles moisture differently, and isn't learning these lessons on your house for the first time.
Get a Straightforward Estimate
If you're dealing with swollen sashes, corroded hardware, moss buildup on your sills, or a window that's leaked once too often, we're happy to take a look and give you an honest read on what's actually going on — no pressure, no upsell. Use the form below to request a free estimate for your Obstruction Pass area home.