Do new-construction windows have to meet different code requirements than replacement windows?

Yes — new construction is reviewed against current building code for egress sizing in bedrooms, safety glazing near doors and low sills, and energy performance, while a replacement window going into an existing opening isn't always held to every one of those same triggers. Abbotsford falls under the BC Building Code rather than Washington's, so always confirm current local requirements with your builder or building department before finalizing an order.

What should I ask before hiring someone to install windows on a new build?

Ask how they sequence the window install with the weather-resistive barrier and siding, who's responsible for sill pan flashing, what warranty covers the labor versus what the window manufacturer covers, and whether they've actually worked new construction rather than only retrofit jobs. On a build near the border, also ask how they coordinate their schedule with your general contractor's timeline.

Can we pick our own window brand, or do you supply one?

Most of our new-construction work goes in with vinyl, fiberglass, or aluminum-clad wood windows that the builder or homeowner has already selected; we install to that spec and will flag ahead of time if a particular unit's flange design doesn't match our standard flashing sequence, so it gets sorted out before the order is placed.

Fiberglass vs. vinyl for new construction here — does it matter?

Both perform well when installed correctly; the practical difference shows up over 15-20 years, where fiberglass frames expand and contract less through the freeze-thaw and heavy-rain cycles typical of this region and can be painted if you want a custom exterior color later. Vinyl stays the lower-cost option and is a solid choice when budget is the main driver.

Do you install new-construction windows on builds across the border in Abbotsford?

Yes, as part of the crew on builds in that corridor — we work under the general contractor, who holds the local permits and is responsible for BC Building Code compliance, and we handle the physical installation and flashing detail. If you're building in Abbotsford, loop in your builder early so window ordering and our schedule line up with any cross-border delivery logistics.

New-Construction Window Installation for Abbotsford, BC Builds

New-Construction Windows Are a Different Job Than Replacement Windows

People often assume "window installation" is one job. On a new build it isn't the same task as swapping an old window in an existing wall, and the difference matters more than most homeowners realize until something leaks. New-construction windows have a nailing fin around the perimeter of the frame that gets integrated directly into the wall's weather-resistive barrier (WRB) and flashing system before the siding ever goes on. There's no old frame to work around, no trim to disturb, and no guessing about what's hidden in the wall — but there's also no room for a shortcut, because whatever gets built into that opening now is what the house lives with for the next several decades.

On a new build near Abbotsford, BC, we're usually one trade in a sequence — framer, WRB installer, window crew, siding crew — and the window install has to land at exactly the right point in that order. Go too early and the WRB isn't ready to lap over the fin correctly. Go too late and you're fighting a schedule that's already moved on to siding. Getting that sequencing right is as much a part of "installing windows" as the physical fastening.

What This Climate Does to a Window Opening Over Time

This part of the Pacific Northwest — Whatcom County on the US side, straight up into the Fraser Valley on the Canadian side — deals with the same weather pattern regardless of which side of the border a house sits on: long stretches of driving, wind-pushed rain, marine air moving in off the water, and a moss and algae season that runs most of the year on anything shaded or north-facing. None of that is dramatic on any single day. The problem is duration. A window opening that's 98% sealed will hold up fine through one storm. It's the cumulative exposure — months of damp air, repeated wetting and drying, freeze-thaw cycles in winter — that finds the 2% that wasn't detailed correctly.

New construction gives us the advantage of building the opening right the first time, before there's any siding, insulation, or drywall to work around. That's the whole argument for doing it carefully now rather than treating it as a step to get through quickly on the way to the next trade.

The Installation Details That Actually Keep Water Out

Rough Opening Prep and the Sill Pan

Every opening gets checked for square and level before a window goes anywhere near it — a frame installed slightly racked will bind, won't seal evenly, and can crack glazing seals early. At the sill, we install a sloped or pan-style flashing so that any water that does get past the window has somewhere to go besides straight down into the framing. This is the single most common corner cut on lower-quality installs, because it doesn't show once trim and siding go on, and it's the detail most likely to cause a slow, hidden leak years later.

Flashing Sequence and House Wrap Integration

Flashing tape and the house wrap have to be layered in the correct order — sill first, then the window's nailing fin, then jamb flashing, then head flashing last, each piece lapping over the one below it like shingles. Reverse that order anywhere and you've built a spot where water runs behind the barrier instead of over it. We tie every window into the WRB before the siding crew shows up, so there's no ambiguity about whose job that overlap was.

Fastening and Air-Sealing

Windows get fastened per the manufacturer's schedule — skipping fastener points to save time is a warranty issue as well as a performance one. On the interior side, the gap between the frame and rough opening gets air-sealed with a compatible low-expansion product, not packed with whatever's on the truck; the wrong foam can bow a vinyl frame enough to affect how the sash operates.

Working New-Construction Jobs in the Abbotsford, BC Corridor

Lynden sits close enough to the border that we regularly work builds on both sides of it, and the climate argument for careful window installation doesn't change when you cross the line — the rain doesn't stop at the border and neither does the moss. What does change is the regulatory picture: a build in Abbotsford falls under the BC Building Code, not Washington's, and permits, inspections, and code sign-off are the general contractor's responsibility, not ours. Our role on a Canadian build is the same physical scope — installing and flashing the windows correctly — working inside the schedule and requirements the builder has already set up. If you're building in Abbotsford and want us on the crew, the earliest useful conversation is with your builder, so window ordering, our availability, and any cross-border delivery logistics line up before framing is done.

Choosing a Window Line for New Construction

On new construction, the window itself gets picked earlier in the process than on a replacement job — often by the builder, sometimes by the homeowner working with the builder's plans. The three material categories cover almost everything we install:

Material	Upfront Cost	How It Handles This Climate	Best Fit
Vinyl	Lowest	Good moisture resistance; frame can expand/contract more with temperature swings	Budget-driven builds, standard sizes
Fiberglass	Mid-to-higher	Very stable dimensionally in wet, freeze-thaw conditions; takes paint if a custom exterior color is wanted later	Larger openings, long-term owners
Wood interior / aluminum- or fiberglass-clad exterior	Highest	Excellent weather performance on the exterior face; interior wood look for those who want it	Higher-end builds prioritizing appearance

We don't push one line over another — we install to the product the builder or homeowner has selected, and we'll flag it ahead of time if a particular unit's flange or frame design doesn't match well with our standard flashing sequence, so it's addressed before the order is placed rather than on install day.

Our Process, Start to Finish

Initial conversation with you or your builder about scope, window count, and target install date
Confirm window specs, sizes, and rough opening dimensions against the plans
Schedule the install to land after WRB is up and before siding starts
Install sill flashing, set and fasten each window, complete flashing tape sequence
Air-seal interior gaps and do a final check on operation (sash movement, locks, screens)
Walk the job with the builder or homeowner before siding crew moves in behind us

What Drives the Cost of a New-Construction Window Package

Every new-construction quote is specific to the plans, but the same handful of factors move the number up or down on nearly every job:

Factor	Why It Matters
Number and size of openings	More and larger windows mean more material and labor hours
Window material and glazing package	Vinyl vs. fiberglass vs. clad-wood, plus double vs. triple glazing
Wall height and access	Second-story and stairwell windows take longer and often need lift equipment
Special shapes or oversized units	Custom flashing details and sometimes crane or extra-crew placement
Site and schedule	Cross-border delivery timing, tight build schedules, or weather delays

We're glad to give a straightforward estimate once we have a set of plans or a window schedule — broad ballpark numbers without seeing the actual opening sizes and quantities aren't useful to either of us.

Checklist: What to Have Ready Before Your Windows Go In

Final window schedule (sizes, quantities, swing/slide direction) confirmed against the plans
Windows ordered with enough lead time — new-construction units are often built to order, not stocked
WRB installed and inspected before we're scheduled on site
Rough openings framed square and to the correct dimensions
Clear communication with the siding crew on who follows whom, and when
For Abbotsford builds: confirmed with your builder that any cross-border material delivery is accounted for in the timeline

Why a Crew That Already Works This Corridor Matters

New-construction window installation isn't complicated in theory — flash it in the right order, fasten it correctly, seal it, move on. What's harder to get from a crew that doesn't work this area regularly is judgment about how much margin to build in for the actual weather here, not textbook weather. A crew that's used to a drier climate can underestimate how much wind-driven rain a wall assembly in this corridor needs to shed, or treat moss and algae growth as a cosmetic problem instead of a sign that a surface stays wet longer than it should. Working consistently across Whatcom County and into the Fraser Valley means we're building to the same standard on both sides of the line, because the weather doesn't know where the border is.

If you're building in Abbotsford, BC and want a straightforward look at what a correct new-construction window install involves for your project, reach out for a free, no-pressure estimate — the form below gets you a real answer, not a sales pitch.