New-Construction Windows Are a Different Job Than Replacement
When people call us about "new windows," most of the time they mean replacement windows — swapping an old unit for a new one inside an existing opening. New-construction windows are a different product installed a different way. They have a nailing fin (also called a flange) around the perimeter of the frame that gets fastened directly to the framing and integrated into the wall's water-resistive barrier before siding ever goes on. There's no old frame to work around and no trim to disturb — the window becomes part of the wall assembly from the studs out.
That makes new-construction installs common on a few kinds of Burlington jobs: full new builds, additions and bump-outs, garage conversions, and any remodel where the wall gets opened down to the studs. If you're a homeowner working with a builder, or a builder looking for a sub who already knows Skagit County inspection expectations, this is the window work that has to be right before the siding covers it up — because once it's closed in, mistakes don't get found until they're leaking.

What Burlington's Climate Actually Demands From a Window Opening
Skagit County sits in the kind of marine climate that punishes shortcuts. Three things matter most for a new-construction window opening here:
Driving Rain
Storms off the Sound don't just fall straight down — wind pushes rain sideways into wall assemblies, especially on west- and south-facing elevations. A window opening built for a drier climate, with sealant standing in for real flashing, will eventually take on water. The fix isn't more caulk; it's a flashing sequence that sheds water downward and outward no matter which direction the wind is blowing.
Salt Air
Proximity to Puget Sound means airborne salt finds its way onto exposed metal — fasteners, hinges, cladding, and flashing. Over years, the wrong hardware or an unprotected aluminum trim piece will pit and corrode faster than it would inland. It's not dramatic, but it's steady, and it shows up first at the fasteners nobody thinks to check.
A Long Moss and Algae Season
Skagit County's damp, shaded conditions keep moss and algae active for much of the year, not just a rainy month or two. Anything that holds moisture against a window frame — trapped debris in a sill, a flashing lap installed backward, a gap where water can sit instead of drain — becomes a growth spot, and eventually a rot spot. Correct drainage detailing matters more here than in a drier region because there's simply less time each year for surfaces to fully dry out between rain events.
The Install Sequence That Actually Keeps Water Out
A correct new-construction window install follows a shingle-lap order — each layer overlaps the one below it, so water is always directed down and out, never trapped behind the next layer. Skipping steps or doing them out of order is the single most common cause of hidden window leaks we get called to diagnose in older installs.
- Rough opening check. Confirm the opening is square, level, and sized correctly before the window ever shows up on site — fixing a bad rough opening after the window arrives costs everyone time.
- Sill pan installation. A sloped, sealed pan at the bottom of the opening gives any water that does get past the window somewhere to go besides into the wall.
- Water-resistive barrier prep. The house wrap or building paper around the opening gets cut and folded in a specific pattern so it laps correctly with the window flange and later the flashing tape.
- Window set and fastening. The unit goes in plumb, level, and square, fastened per the manufacturer's schedule — not just wherever it's convenient to drive a nail.
- Flashing tape at the flange. Side flanges first, then the head flashing last, each lapping over the one before it — this is the step that most determines whether the window sheds wind-driven rain correctly.
- Sealant, used correctly. Sealant backs up the flashing at specific joints; it is never the primary water barrier on its own.
Every one of those steps gets buried under siding within days. That's exactly why we treat the flashing inspection as non-negotiable before we move on — there's no revisiting it later without tearing off finished exterior.
Frame Material Choices for Skagit County New Builds
New construction gives you a real choice of frame material, since you're not constrained by an existing opening. Each option trades off differently against this region's salt air, rain, and moisture load.
| Frame Material | Salt Air / Corrosion | Moisture Behavior | Maintenance |
|---|---|---|---|
| Vinyl | Not affected by salt air | Won't rot; relies entirely on correct flashing to stay dry | Low — no painting or sealing needed |
| Fiberglass | Excellent resistance | Very stable; minimal expansion/contraction | Low; higher upfront cost |
| Aluminum | Can pit and corrode over time near the Sound unless properly coated | Conducts cold and can condense; needs a thermal break | Moderate — hardware and finish need occasional attention |
| Wood-clad | Cladding protects the wood, but any breach exposes it to rot risk | Best appearance, but least forgiving of flashing mistakes | Highest — exterior cladding and interior wood both need upkeep |
There's no single "right" answer for every project — it depends on the elevation's rain exposure, the home's design, and what the homeowner is willing to maintain. What we won't do is recommend a frame material or hardware finish that we know struggles in this climate just because it's cheaper up front; we'd rather explain the trade-off honestly and let you decide.
Glass and Rating Considerations
Beyond frame material, look at the window's NFRC label for U-factor (heat loss) and, on more exposed elevations, its air infiltration rating. Skagit County's energy code sets minimum U-factor requirements for new construction, and a window that barely meets code on paper can still perform poorly if it's not installed with the flashing sequence above. The glass package matters, but it doesn't compensate for a bad installation.
How We Work New-Construction Jobs in Burlington
Whether we're working directly with a homeowner or as a sub for a builder, the sequence stays the same:
- Review the plans and rough openings before framing is finalized, so window sizes and swing directions are confirmed early — not discovered as a problem at delivery.
- Coordinate timing with the framer and house wrap installer so the WRB is in place and ready before we set windows.
- Install and flash each window to manufacturer specification, adjusted for the elevation's rain exposure.
- Photo-document flashing at each opening before siding covers it — useful for warranty records and for any future work on the home.
- Walk the finished openings with the builder or homeowner before we consider the job done.
On a full new build we're usually one piece of a larger schedule, which means showing up when we say we will matters as much as the install itself — a delayed window crew can hold up siding, and a rushed one can compromise the flashing. We plan for both.
What Affects Cost on a New-Construction Window Job
New-construction window costs vary by project, but the main drivers are consistent. We can give you a firm number once we've seen the plans or the openings.
| Factor | Why It Moves the Price |
|---|---|
| Number and size of openings | More and larger windows mean more material and labor hours |
| Frame material | Vinyl runs least expensive; fiberglass and wood-clad cost more per unit |
| Elevation exposure | Openings facing prevailing wind-driven rain often warrant extra flashing detail |
| Access and building stage | Working from ground level on a fresh frame is faster than working around scaffolding on a partially finished home |
| Coordination complexity | Jobs requiring tight scheduling with other trades take more project management time |
As a rough general range, homeowners in this area typically see new-construction window installation priced per opening, with the total shaped heavily by how many windows are going in and what frame material is chosen. We'll walk through the actual numbers for your project at the estimate — we don't like quoting blind.
Checklist: What to Confirm Before Your Windows Go In
Whether you're a homeowner overseeing a build or a builder bringing in a window sub, these are worth confirming before the first window is set:
- Rough openings are framed square, level, and to the correct dimensions for the windows ordered.
- The house wrap or building paper is installed and lapped correctly before window set begins.
- Sill pans are planned for every opening, not just the most exposed ones.
- The flashing sequence (sill pan, sides, then head) is specified in writing, not left to whoever's on site that day.
- Frame material and hardware finish have been chosen with this climate in mind, not just for upfront cost.
- There's a plan to photo-document flashing before siding covers the openings.
- Someone with authority to stop work if an opening isn't ready is actually on site during the install.
Why It Matters to Hire a Crew That Already Works Burlington
Flashing details that work fine in a dry climate aren't automatically right here. A crew that's only worked drier regions may under-detail an opening because they've never had to answer for what driving rain does to it over a Skagit County winter. A crew that works Burlington regularly has already seen which elevations take the worst weather, which fastener and flashing combinations hold up against salt air over years rather than months, and what Skagit County's inspectors expect to see before they'll sign off on a rough-in.
That local repetition is what turns a technically correct install into one that's actually built for where it sits. It also means we're not learning the region on your project — we're applying what years of Burlington and Mount Vernon jobs have already taught us.
If you're planning new-construction windows for a build or addition in Burlington, we're happy to take a look at your plans or openings and walk you through what we'd recommend. Reach out for a free, no-pressure estimate using the form below.
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