How long does replacing windows in an average home actually take?

Most homes take one to three days depending on the number of windows and whether any framing repair is needed once the old units come out. Homes with rot discovered mid-project take longer, since that framing work has to be done correctly before the new window goes in. We'll give you a realistic timeline during the estimate, not just a best-case number.

What should I ask a contractor before hiring them for window installation?

Ask specifically how they handle flashing and sill pan detailing, since that's the part of the job that determines whether water gets managed or trapped. Ask whether they inspect and repair framing before setting the new window, rather than installing over existing damage. It's also fair to ask how many jobs they've done in this specific climate, since marine-climate detailing differs from drier regions.

Do you only install one window brand?

No — we work with a range of manufacturer lines and choose based on what fits your home's exposure, budget, and style rather than pushing a single product. What matters more than the brand name is the frame material and how the installation itself is detailed. We'll walk you through the honest tradeoffs for your specific situation.

Is triple-pane glass worth it over double-pane in this climate?

Triple-pane adds insulation value and can help with condensation resistance, but the gain over a quality double-pane window is often modest for typical Whatcom County and Fraser Valley temperatures, which aren't as extreme as colder inland climates. It adds weight and cost, so it makes the most sense on wind-exposed walls or rooms with chronic condensation issues. We can help you weigh whether it's worth it for your specific windows rather than assuming it always is.

Does being near the Aldergrove–Lynden border crossing affect scheduling or logistics for a job?

It's a short, well-used crossing, so it doesn't meaningfully complicate scheduling on our end. We do build in some flexibility around border wait times and local weather when planning installation days. Homeowners should confirm any permitting requirements specific to their own municipality, since that's outside what we control.

Aldergrove, BC Window Installation Services

Window Installation for Aldergrove, BC Homes

Aldergrove sits just north of the border crossing that connects it to Lynden and the rest of Whatcom County, and the homes on both sides of that line deal with the same weather. Moist Pacific air moves in off the water, rain falls sideways more often than people from drier climates expect, and shaded rooflines and siding stay damp long enough to grow moss for a good chunk of the year. Windows take the brunt of that. A window that's a few degrees off level, or sealed with the wrong product, doesn't fail right away — it fails slowly, over two or three wet seasons, and by the time you see it on the inside, the sheathing behind it has usually already taken damage.

We're a Lynden-based crew and we treat Aldergrove as part of our regular service area, not a special trip. That matters more than it sounds like it should — a crew that's used to this specific stretch of the Fraser Valley and Whatcom County border region already knows what the local moisture load does to a window opening, and doesn't have to learn it on your house.

What This Climate Does to Windows Over Time

Driving rain and wind-driven moisture

Standard window flashing details are built assuming rain falls mostly straight down. In a marine climate with regular wind-driven rain, water gets pushed sideways and upward under trim and behind flanges that weren't lapped correctly. Over time that shows up as soft trim, stained drywall below a sill, or a musty smell in a room that never had one before.

Salt-laden air

Proximity to the Strait of Georgia and the broader Salish Sea airshed means the air carries a fine salt content that settles on hardware, fasteners, and any exposed metal. Cheaper hinges, cranks, and screws corrode faster here than they would inland. It's a slow process, but it's steady, and it's one of the reasons hardware quality matters more here than a spec sheet might suggest.

The long moss season

Shaded north- and east-facing walls in this region can stay damp for months at a time, which is exactly what moss needs. Moss holding moisture against a window frame or the trim around it keeps that wood or composite wet far longer than open sun exposure would, accelerating rot at the corners and joints where water already wants to collect.

Signs Your Windows Are Overdue

Most homeowners don't replace windows because they woke up one day and decided to — they replace them because something finally became impossible to ignore. Here's what we're actually looking for during an assessment:

Visible daylight or a draft around the frame when the window is closed and locked
Fogging or a permanent haze between the panes (a sign the seal has failed)
Wood trim that's soft, spongy, or stained at the bottom corners
Difficulty opening, closing, or locking that's gotten worse over a year or two
Moss or dark streaking on the siding directly above or beside the window
Higher heating bills without any other explanation
Condensation forming on the inside of the glass regularly through fall and winter

One or two of these on their own might just mean a caulking touch-up. Several together, especially on the same wall, usually mean the installation detailing has been letting moisture in for a while.

What a Correct Installation Actually Involves

Window installation gets sold as if the window itself is the whole job. It isn't. The window is a manufactured product built to a consistent standard; what varies — and what determines whether it lasts — is everything around it.

The opening comes first

Before a new window goes in, the opening gets checked for square, level, and soundness. Any rot in the surrounding framing gets addressed at this stage, not covered over. Skipping this step is the single most common reason a replacement window fails early in a wet climate.

The sill pan and flashing sequence

A sloped sill pan under the window gives any water that does get past the sash somewhere to go — out, not into the wall cavity. Flashing tape and building paper get layered in the correct shingle-lap order so water sheds down and over each layer, never up underneath it. This detail is invisible once the trim goes back on, which is exactly why it's the detail that gets skipped by crews trying to move fast.

Sealant selection and placement

Not every sealant is meant for constant exposure to driving rain and salt air. We use products rated for this kind of climate, and we don't rely on caulk alone to do a flashing detail's job — caulk is a backup, not the primary defense.

Fastening and hardware

Corrosion-resistant fasteners and hardware cost a little more up front and matter a lot over a decade of salt air exposure. It's a small line item that has an outsized effect on how the window operates five and ten years down the road.

Choosing the Right Window for an Aldergrove Home

There isn't one universally "best" window material — there's a best fit for your home's exposure, your budget, and how much upkeep you want to take on. Here's how the common options compare for a marine climate like this one:

Frame Material	Moisture & Salt-Air Behavior	Maintenance	Best Fit
Vinyl	Doesn't rot or corrode; performs consistently in damp conditions	Low — occasional cleaning	Most homes prioritizing value and low upkeep
Fiberglass	Very stable in moisture and temperature swings; holds paint well if color changes are wanted later	Low to moderate	Homeowners wanting extra rigidity and a longer-term product
Wood-clad	Needs correctly detailed cladding and sealing to keep moisture off the wood core	Higher — finish and joints need periodic checks	Homeowners set on a wood interior look who accept the upkeep
Aluminum-clad	Durable exterior, but bare aluminum hardware and trim are more exposed to salt-air corrosion over time	Moderate	Specific architectural styles where the look is a priority

We don't push one material across every job. We'll tell you honestly which option fits your exposure — a shaded, wind-facing wall gets a different recommendation than a sheltered, south-facing one.

Our Process, Start to Finish

Walkthrough and assessment — we look at every window being discussed, check the framing where accessible, and note exposure differences wall by wall.
Honest scope and estimate — you get a clear breakdown of what's being replaced, what materials we're recommending and why, and a straightforward number, not a lowball that grows once work starts.
Scheduling around the weather — in a climate with a long wet season, we plan installation days around forecasts so openings aren't sitting exposed longer than necessary.
Removal and opening inspection — old windows come out, and the framing gets a real look before anything new goes in.
Correct flashing, sill pan, and sealant installation — the part that doesn't show, done in the right order, every time.
Window setting, shimming, and fastening — set plumb, level, and square, with corrosion-resistant hardware.
Interior and exterior trim, finish work, and cleanup — the site gets left the way we found it, minus the old windows.

Why a Crew That Already Works Aldergrove, BC Matters

The Aldergrove–Lynden border crossing means this community and Whatcom County share more than a highway — they share weather, building stock from similar eras, and the same set of moisture problems. A crew that already does regular work in this stretch isn't guessing at what your walls have been dealing with; we've seen the same rot patterns, the same moss buildup, and the same failed flashing jobs on houses just like yours, on both sides of that line.

That familiarity shows up in small but real ways: knowing which wall orientations tend to need extra attention, not being surprised by how long moss season actually runs here, and scheduling installation work with this region's rain patterns in mind rather than a generic calendar. It also means we're a known, reachable local crew if a question comes up two years after the job is done — not a company that did one job in the area and moved on.

Simple Maintenance That Extends the Life of New Windows

A correct installation gets you most of the way to a window that lasts. A little seasonal attention gets you the rest of the way:

Rinse accumulated salt film off glass and frames periodically, especially on wind-exposed walls
Clear moss and debris from anywhere it collects against a frame or the trim above a window
Check that exterior caulking lines stay intact each fall before the wet season sets in
Operate hardware — cranks, locks, hinges — a few times through the year so moving parts don't seize
Keep gutters and downspouts clear so water isn't sheeting down past window heads

None of this is complicated, but skipping it for a few years in a row is how a well-installed window ends up with a preventable problem anyway.

Get a Straightforward Estimate

If you're dealing with drafty windows, fogged glass, or trim that's starting to show what a few wet seasons can do, we're glad to take a look. Fill out the form below for a free, no-pressure estimate — we'll tell you honestly what your windows need and what they don't.