Do you install the windows yourselves or only supply them for the framer to set?

We install — the nailing fin, flashing, and WRB integration are all part of the same sequence, so having one crew handle the opening from sill pan through flashing keeps the water management continuous instead of split between trades. This also avoids finger-pointing later if a leak ever shows up.

How do I check that a window contractor is actually qualified for new-construction work, not just replacements?

Ask them to walk you through their flashing lap sequence step by step — sill, jambs, head — and what happens if the rough opening isn't square. A contractor who mainly does replacement windows may not have hands-on experience with WRB integration and sill pan work, which is a different skill set specific to new construction.

Are vinyl windows good enough for a house this close to the water, or do we need something higher-end?

Quality vinyl windows handle salt air well since the frame material itself doesn't corrode, and they're a solid, budget-reasonable choice for most rooms. Fiberglass is worth considering for elevations that take the most direct weather, but it's a performance upgrade, not a requirement for vinyl to hold up here.

What's a sill pan and why does it matter more here than in a drier climate?

A sill pan is a sloped, waterproof liner installed at the bottom of the rough opening before the window goes in, so any water that gets past the window drains back outside instead of sitting on the sill or soaking into the framing. With the driving rain and long wet season West Sound gets, a flat sill without a pan is one of the fastest ways to develop a hidden leak.

How does moss season affect new-construction window trim specifically?

Trim and sills with flat surfaces or poor drainage hold moisture longer, which gives moss and algae a place to take hold, especially on north-facing or shaded elevations. Designing sills with real slope and drip edges during construction — rather than adding it later — keeps those surfaces shedding water and staying cleaner through the wet months.

West Sound New-Construction Windows | Orcas Island

Building New in West Sound: Windows Are Part of the Weather Envelope, Not Just a Fixture

When you're framing a new home on the west side of Orcas Island, the windows aren't a finishing touch you pick out of a catalog after the fact — they're one of the main components of your building envelope. Get the install sequence wrong and you've built a leak path into brand-new walls before the paint is even on. Get it right, and the windows work with your siding, house wrap, and flashing to shed water and salt spray for decades instead of fighting them.

West Sound sits exposed to weather moving across the water, with wind-driven rain and salt-laden air that reach places a more sheltered lot never sees. New construction gives you one real chance to set the window openings up correctly — sill pans, flashing laps, and WRB integration all have to happen in the right order, before the siding goes on and covers the evidence. This page covers what that job actually involves for a West Sound new build, and why the sequence matters more here than it does inland.

What West Sound's Climate Asks of a New Window Install

Salt Air

Airborne salt off the water accelerates corrosion on exposed fasteners, hardware, and unprotected metal flashing. On a new build, this mostly comes down to material choice and making sure every fastener and flashing component at the window opening is rated for a marine-adjacent environment — not just whatever came in the standard builder's package.

Driving Rain

Storms here don't just fall straight down — wind pushes rain sideways and up under trim, sills, and laps that would stay dry in a calmer climate. A new-construction window opening has to be flashed with that in mind: every layer lapped so water moving in any direction, including upward under pressure, still drains back out and away from the wall assembly.

Moss Season

San Juan County's long wet season keeps moss and algae growing on north-facing and shaded surfaces for much of the year. On new construction this mostly affects trim and sill design — surfaces that hold standing moisture invite moss and slow rot; sills with real slope and drip edges shed water and stay cleaner longer.

New-Construction Windows vs. Replacement: Why the Method Is Different

New-construction windows have a nailing fin around the perimeter that gets integrated directly into the wall's water-resistive barrier (WRB) before siding goes on. This is different from a replacement or "pocket" window, which gets inserted into an existing opening with the exterior trim already in place. Because we're building the wall assembly from scratch, new construction is actually the easier job to get right — but only if every step happens in the correct order. Skip a step, or install windows before the WRB detailing is finished, and you lose the ability to fix it without pulling siding back off.

The order that matters, generally: rough opening prepared and sill pan installed first, WRB run down into the pan and up the sides, window set and fastened through the nailing fin, then flashing tape lapped over the fin in shingle fashion — bottom, sides, top — so every layer above overlaps the one below it, the same way roof shingles work. Get the lap order backwards anywhere and you've built a spot for water to work its way in behind the window instead of running down and out.

What a Correct Installation Actually Involves

Rough openings checked for square, level, and correct size before any window is set
Sloped sill pan installed at every opening — never a flat sill that lets water pool
WRB integrated with the pan and jambs before the window goes in, not after
Window set plumb, level, and square, with shims placed correctly so the frame isn't stressed
Flashing tape applied in the correct shingle-lap sequence: sill, jambs, then head
Head flashing or drip cap installed above the window to break the water path before it reaches the top of the frame
Fasteners and any exposed hardware rated for coastal/marine exposure
Interior and exterior sealant joints placed only where they belong — sealant is a backup, not a substitute for correct flashing

None of this is exotic. It's the same fundamentals good window installers use anywhere. What changes on West Sound is the margin for error — a flashing detail that would be a minor risk in a drier, calmer inland location is a real vulnerability here, so we don't treat any of these steps as optional or skip them to save time.

Frame Material: What Holds Up Here

Frame material affects how a window handles salt air, moisture cycling, and the region's temperature swings over the life of the building. There's no single "correct" answer for every project — it depends on budget, the home's design, and how exposed the opening is — but here's how the common options compare for a West Sound new build.

Frame Material	Salt Air / Corrosion	Moisture Behavior	Maintenance	Typical Fit
Vinyl	Good — doesn't corrode	Stable, won't rot	Low	Budget-conscious builds, most rooms
Fiberglass	Very good	Very stable, minimal expansion/contraction	Low	Exposed elevations, higher-performance builds
Wood-Clad	Good on clad exterior; interior wood needs protection from any moisture intrusion	Sensitive if flashing fails	Moderate — clad exterior, wood interior needs occasional attention	Homes prioritizing interior wood appearance
Aluminum	Requires marine-grade finish; standard finishes corrode faster in salt air	Prone to condensation without thermal breaks	Moderate to high	Specific architectural applications only

For most West Sound new-construction projects, vinyl or fiberglass framing gives the best balance of corrosion resistance and low upkeep. Wood-clad is a reasonable choice where the interior wood look matters, as long as the flashing behind it is done right — because unlike vinyl or fiberglass, a flashing failure behind wood-clad framing has real consequences instead of just cosmetic ones.

How We Work With Builders and Owners on New Construction

On a new build, window installation isn't a standalone job — it has to line up with the framer's schedule, the WRB and siding contractor's sequence, and often the general contractor's inspection windows. We coordinate directly with whoever's running the job site so the openings are ready when we arrive and the WRB/flashing handoff to the siding crew (often us, on a siding-and-window package) happens without a gap in coverage.

Before any window goes in, we walk the rough openings and flag anything that needs correcting — out-of-square framing, missing blocking, or WRB that wasn't run the way we need it for a proper lap sequence. It's a lot cheaper to fix a framing issue before the window's in than after siding has gone up around it.

Mistakes We See on New Builds — and Why We Don't Make Them

The most common problems we run into on new construction aren't from bad windows — they're from install sequence shortcuts. Flat sills instead of sloped pans. Flashing tape applied in the wrong lap order, so water runs into the seam instead of over it. Sealant used to patch a gap instead of the flashing being extended to actually cover it. Head flashing skipped because "the siding will cover it anyway." Every one of these is invisible on move-in day and shows up as a wall problem two, five, or ten years later — right when it's hardest and most expensive to trace back to the window opening.

We build every opening assuming it will eventually face a real storm — because on West Sound, it will. That means following the sill-pan-then-WRB-then-window-then-flashing sequence every time, not just on the elevations that catch the most weather.

What to Look for in a New-Construction Window Contractor

Can explain their flashing sequence step by step, not just "we use quality tape"
Uses sloped sill pans as standard practice, not an upgrade
Comfortable coordinating directly with your framer, GC, or siding crew
Specifies fasteners and hardware rated for coastal/marine exposure
Will walk you through frame material trade-offs instead of pushing one product
Has actually worked on San Juan County builds and knows what driving rain and salt air do to an opening over time
Gives you a clear, written scope — what's included, what's not, and how change orders on framing issues get handled

Why a Crew That Already Works West Sound Matters

Window flashing detail that's correct in a sheltered inland subdivision can be undersized for a West Sound lot catching wind-driven rain off the water. A crew that installs windows across Orcas Island and San Juan County regularly sees how different exposures on this island actually perform over time — which elevations take the worst weather, which sill and flashing details hold up through a real moss season, and where builder-standard details fall short here specifically. That's knowledge you don't get from a install manual; it comes from doing this work, on this island, season after season.

If you're planning a new build or working with a general contractor on one in West Sound, we're glad to talk through the window package before framing is even finished — it's easier to build it right the first time than to fix it later. Reach out for a free, no-pressure estimate using the form below.