What's the real difference between new-construction and replacement windows?

New-construction windows have a nail fin that gets integrated into the wall's weather-resistive barrier during framing, before siding goes on. Replacement windows are designed to fit into an existing finished opening without disturbing the surrounding siding or trim. Using the wrong type for the situation usually creates a flashing or water-management problem down the road.

What should I ask a contractor before they install windows on my new Point Roberts build?

Ask how many new-construction installs they've done specifically in coastal, exposed locations like this peninsula, and ask them to walk you through their flashing and sill pan sequence in plain terms. Ask for references from similar builds and confirm they're licensed and insured for the work. A contractor who can explain their process clearly is usually the one who's done it enough times to get it right.

Do you install a specific window brand for new construction here?

We don't push one brand across every job — we match the frame material and product line to the elevation's exposure, the home's design, and the budget. For higher-exposure sides of a Point Roberts lot we typically lean toward vinyl or fiberglass products built for coastal, high-moisture climates. Our choices come down to maintenance burden and moisture performance, not any one manufacturer being better across the board.

Do new-construction windows need special hardware because of the salt air here?

Yes — standard-grade fasteners and balance hardware can start corroding years earlier in salt-laden coastal air than they would inland. We specify corrosion-resistant fasteners and hardware for new builds on exposed Point Roberts lots as a standard practice, not an upgrade option. It's a small cost difference that avoids a much bigger repair down the line.

Does Point Roberts' exclave location create any special building or permitting considerations?

Building code requirements, including egress sizing and energy code minimums, are the same Washington and Whatcom County standards that apply anywhere in the county. What changes is scheduling — because Point Roberts has no direct U.S. road access, material deliveries and crew logistics need extra lead time built into the project timeline. Working with a crew already familiar with that reality helps keep a new build from stalling on logistics alone.

New-Construction Windows in Point Roberts, WA

Building New in Point Roberts Means Building for the Water on Three Sides

Point Roberts sits on a low peninsula with water on three sides, which means new construction here takes a different kind of weather beating than a typical inland Whatcom County lot. Salt-laden air, wind-driven rain coming straight off the water, and shaded, damp lots that grow moss fast are just part of building on this stretch of coastline. New-construction windows are one of the few building components where getting it right the first time actually matters more than getting it fixed later — once siding and trim are closed up, a bad flashing detail behind a window can sit hidden for years before it shows up as rot or a stain on the drywall.

We install new-construction windows in Point Roberts as part of the framing sequence, not as an afterthought once the shell is closed in. That timing is what lets us tie the window properly into the weather-resistive barrier and get the flashing sequence right, instead of trying to patch it in after the fact.

What Salt Air, Driving Rain, and Moss Actually Do to a New Window

Corrosion from Salt Air

Salt air doesn't just affect metal roofs and railings — it works on window hardware, fasteners, and flashing metals too. Standard-grade screws, cheap balance hardware, or non-rated flashing can start corroding years before the glass or frame shows any wear. On a new build, this is solved at the material-selection stage, not after the fact, by specifying corrosion-resistant fasteners and hardware rated for coastal exposure.

Wind-Driven Rain Finds Every Gap

Rain that comes in sideways off the water doesn't behave like rain falling straight down. It gets pushed up under trim, into seams, and against any flashing lap that isn't shingled correctly. A window that would perform fine on a sheltered inland lot can leak on a wind-exposed Point Roberts elevation if the flashing detail isn't built to shed water outward under pressure, not just gravity.

Shaded, Damp Lots Grow Moss Fast

Many building lots here have tree cover or north-facing exposure that stays damp and shaded most of the year — ideal conditions for moss and algae growth on trim, sills, and siding. Moss holds moisture against wood and composite surfaces long after the rain has stopped, which accelerates rot at any seam or joint that isn't sealed and drained correctly from day one.

Getting a New-Construction Install Right, Not Just Installed

Flashing and Sill Pans

New-construction windows use a nail fin that gets integrated directly into the wall's weather-resistive barrier (WRB) during framing — this is what separates a correct new-construction install from a retrofit or pocket-replacement window. The sequence matters: WRB goes on first, a sloped sill pan goes under the rough opening to carry any water that gets past the window back out to the exterior, then flashing tape laps over the fin shingle-style so water is always directed down and out, never trapped behind the siding.

Sealant Placement and Drainage

Sealant is not a substitute for correct flashing — it's a supplement to it, and it has to go in the right places. Sealing every gap solid, including weep holes and drainage channels the manufacturer built into the frame, traps water inside the wall assembly instead of letting it drain. We follow the window manufacturer's install instructions for the specific wall assembly being used, rather than a generic install that ignores how that particular product is designed to shed water.

Choosing a Frame Material for Point Roberts Exposure

There isn't one "best" frame material for every new build — it depends on the elevation's wind and rain exposure, the home's design, and the budget. Here's how the common options hold up in this environment.

Frame Material	Salt Air & Rain Exposure	Maintenance	Typical Use
Vinyl	Inert to salt corrosion; no paint or finish to maintain	Low — occasional cleaning	Most new-construction builds, cost-conscious projects
Fiberglass	Very stable dimensionally in temperature and moisture swings	Low	Larger openings, higher-exposure elevations
Wood-clad	Warm interior look, but exterior cladding seams need periodic inspection near salt air	Moderate — seams and finish need attention	Interior-focused design priorities, sheltered elevations
Aluminum	Strong but conducts cold and can corrode faster near saltwater unless marine-grade	Moderate to high	Selective use; we recommend it carefully here

For most new builds on wind- and rain-exposed sides of a Point Roberts lot, vinyl or fiberglass tends to be the more forgiving long-term choice. That's a maintenance and moisture-behavior judgment on our part, not a knock on any manufacturer's product — every material has a place depending on the design and the elevation it's going on.

Our Process for New-Construction Windows on Point Roberts Builds

Review the window schedule against actual framed rough openings before ordering — plan-set dimensions and as-built framing don't always match.
Confirm the WRB and flashing details with the builder before window units arrive on site, so there's no delay waiting on materials once the crew is on schedule.
Install each window with a sloped sill pan and shingle-lapped flashing tape tied into the WRB.
Set each unit level, plumb, and square, shimming per the manufacturer's specifications rather than by eye.
Insulate the perimeter gap correctly — overpacked insulation can bow a frame and cause the sash to bind or seal poorly.
Terminate exterior trim and flashing so water sheds away from the opening at every point, including corners and sill ends.
Walk the finished openings with the builder or homeowner before drywall closes in behind them, while any issue is still easy to fix.

Why an Exclave Location Changes the Logistics

Point Roberts is a U.S. exclave — there's no direct U.S. road access, so people and materials generally reach it by crossing through Canada or by water. For a new-construction project, that reality affects delivery lead times, crew scheduling, and how far in advance window orders need to be placed so units aren't sitting at a border crossing while framing crews wait on them. A crew that already works Point Roberts regularly has already built that lead time into how it schedules a job, instead of learning it the hard way partway through a build.

Energy Performance and Code Considerations for This Climate

Whatcom County's marine climate is heating-dominated most of the year, which means U-factor (how well the window resists heat loss) generally matters more day-to-day than solar heat gain, though south- and west-facing glazing on an open water lot can pick up meaningful solar gain worth accounting for in the design. New-construction windows also need to meet Washington's energy code requirements for U-factor, and any bedroom window has to meet egress code minimums for opening size and sill height regardless of which elevation it's on or how exposed that side of the house is to wind. Given the humidity here, a window's condensation resistance rating is also worth checking, particularly on north-facing rooms that stay cooler and damper.

Checklist: What to Confirm Before Your Windows Go In

Rough openings match the actual approved window schedule, not just the original plan set
The WRB (housewrap) is installed and correctly lapped before window units arrive
Flashing tape is compatible with both the WRB and the exterior cladding being used
Sill pans are sloped to shed water outward, not left flat under the opening
Fasteners and hardware specified are corrosion-resistant for coastal exposure
Egress-required bedroom windows meet code minimums for size and sill height
The install method matches the manufacturer's instructions for this specific wall assembly, not a generic install

Why Hiring a Crew That Already Works Point Roberts Matters

A lot of what goes wrong with new-construction windows in a place like this doesn't show up on install day — it shows up two or three winters later, after a few seasons of driving rain and shaded moss growth have had time to work on a weak seam. A crew that's already worked this peninsula knows which elevations take the hardest wind-driven rain, which shaded sides need extra attention against moss and moisture, and how to build the border-crossing logistics into the schedule so a build isn't stalled waiting on materials. That local familiarity is what turns a correct install on paper into one that actually holds up on this stretch of Whatcom County coastline.

If you're planning new-construction windows for a build in Point Roberts, we're happy to walk the site, look at the plans, and put together a free, no-pressure estimate — just fill out the form below.