Windows & Doors in the Pacific Northwest: Comfort, Code, and the Real Cost of Efficiency
Windows and doors might be the most underestimated systems in your home. They sit right at the intersection of comfort, energy performance, design, and building code — and they’re asked to do an incredible job.
Think about it: it can be 0° outside and 70° inside. A window is expected to hold that line. No drafts. No leaks. No condensation. No warping. It has to look good, operate smoothly, meet safety codes, and last for decades.
That’s a big ask.
In this conversation, I sat down with Keith Dashofy, principal and co-owner of Pella Windows & Doors of Western Washington, to talk about materials, efficiency, code requirements, and what really matters when you’re choosing windows — especially here in the Pacific Northwest.
The Window Material Landscape (50,000-Foot View)
If you’re starting a remodel, addition, or new build, most window conversations begin with one basic question:
What is the window made of?
Here are the core materials you’ll encounter:
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Vinyl
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Fiberglass
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Wood
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Wood-clad (wood interior with aluminum exterior)
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Thermally broken aluminum
There are also some “composite” materials floating around the market — often branded with names that sound high-tech. In reality, some of these are essentially wood fiber and adhesive pressed together. They’re marketed as something more advanced, but durability can be questionable, especially in colder or wetter climates.
For practical purposes, your core categories are vinyl, fiberglass, wood, and aluminum systems.
Where Pricing Typically Falls
Generally speaking:
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Vinyl tends to be the entry-level price point.
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Fiberglass and wood often overlap depending on configuration.
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High-end wood or architectural systems can go significantly higher.
But once you move beyond basic vinyl pricing, the decision often becomes less about cost and more about design intent, engineering needs, and long-term performance.
Windows vs. Doors — What Are We Really Talking About?
When people say “windows and doors,” they often lump everything together. But there’s a distinction:
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Entry doors (front doors, garage entry doors) are typically a separate product category.
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Patio doors, sliding doors, French doors, bifolds, stacking doors, and pocketing doors are generally part of the window manufacturer’s system package.
In modern builds, especially in the PNW, large-format glass doors are everywhere. Bifold systems. Stacking multi-slide doors. Kitchen pass-through windows that open like a garage door. The trend is toward bigger openings and stronger indoor-outdoor connection.
And yes — zero-threshold options are possible.
Understanding U-Factor (and Why It Exists)
Let’s talk about efficiency — specifically U-factor.
If you’ve ever heard of R-value (like R-38 attic insulation), U-factor is the inverse measurement. Where R-value measures resistance to heat flow (higher is better), U-factor measures heat transfer (lower is better).
So:
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A lower U-factor = better insulation performance.
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A higher R-value = better insulation performance.
Windows use U-factor because the insulation values are relatively low compared to wall insulation. A typical modern dual-pane window might have a U-factor around 0.28. Convert that to R-value and you’re roughly around R-3.
That’s not very high compared to your walls — but glass is doing something insulation can’t: it’s letting in light and preserving views.
The Real Question: Is Ultra-High Efficiency Worth It?
Here’s where things get interesting — especially in Washington State.
Energy codes continue to tighten. U-factor requirements keep dropping. Triple glazing is becoming more common in certain compliance paths.
But here’s the honest question we wrestle with:
How long does it take to pay back that extra $5,000 in energy savings?
If you upgrade from a 0.28 U-factor window to a 0.22, that’s an improvement — but it’s incremental. And depending on the home size, that upgrade could cost thousands more.
In some cases, the payback period stretches beyond the life of the product itself.
That doesn’t mean triple glazing is wrong. There are homeowners pursuing net-zero or ultra-high-performance builds where it makes perfect sense. But in our mild Pacific Northwest climate, a well-built dual-pane window with a proper Low-E coating often delivers excellent comfort.
And importantly:
Glass is one of the most expensive places to chase energy credits.
If you’re trying to meet Washington’s energy code point system, it may be more cost-effective to pursue:
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Higher-efficiency HVAC systems
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Better wall or attic insulation
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Heat pump water heaters
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Air sealing improvements
Instead of jumping straight to triple glazing.
Balance matters.
Tempered Glass & Safety Requirements
Tempered glass is heat-treated so that if it breaks, it shatters into small, relatively safe pieces instead of dangerous shards.
Code requires tempered glass in specific locations:
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In doors
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Within 18 inches of the floor
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Near doors
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At stairways and landings
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In certain bathroom scenarios (often measured from the tub/shower drain)
Sometimes codes are interpreted differently by inspectors. When in doubt? Temper it. The added cost is usually minor compared to a failed inspection and a replacement window.
Egress Windows: Bedroom Safety
Every bedroom needs an egress window — a secondary means of escape in case of fire.
Requirements typically include:
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Minimum 5.7 square feet of clear opening
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Minimum 20 inches wide
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Minimum 24 inches tall
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Maximum 44 inches from the floor
It has to be large enough for a person to climb out — or for emergency personnel to climb in.
These aren’t design suggestions. They’re life-safety requirements.
Lead Times: What to Expect
Windows are built to order.
Even “builder-grade” packages are manufactured specifically for your project. Typical lead times today are:
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3–6 weeks for standard configurations
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8+ weeks for custom glass or specialty orders
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Larger folding or multi-slide systems may extend further
Compared to pandemic-era delays, things have stabilized significantly. But windows still need to be ordered early in the build process because they’re installed long before finishes like cabinetry.
The Eight Octillion Problem
At one point in our conversation, Keith mentioned something that stuck with me:
There are something like eight octillion combinations of windows and doors when you factor in materials, glass types, grid patterns, sizes, hardware, finishes, and operating styles.
It’s overwhelming.
And the industry hasn’t exactly made it easier. Between energy ratings, SHGC numbers, Low-E variations, design series names, and competing marketing claims, homeowners often feel intimidated.
But here’s the truth:
Most major manufacturers build quality products.
The bigger differentiator often isn’t the minor nuance between one hinge or frame detail — it’s how the windows are designed and placed in your home.
Fenestration Is an Art
“Fenestration” is the placement and proportioning of windows and doors.
This is where real value lives.
A poorly placed window can make a room feel awkward no matter how efficient it is. A well-positioned picture window can completely transform a space — better light, better views, better proportions.
Especially in remodels, thoughtful window redesign can:
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Improve natural light
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Improve sightlines
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Improve exterior curb appeal
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Reduce unnecessary grid clutter
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Improve sound performance
Many homeowners replace windows because of energy concerns — only to discover the aesthetic and acoustic improvements are just as impactful.
The sound reduction alone can be dramatic.
What Really Matters
Efficiency matters. Code matters. Durability matters.
But comfort isn’t just a number on a sticker.
Comfort is:
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No drafts
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Balanced temperature
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Quiet interior spaces
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Beautiful views
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Windows that operate smoothly
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Confidence in installation
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Service support after the sale
In the end, the best window decision isn’t about chasing the absolute lowest U-factor at any cost. It’s about balancing performance, design, budget, and long-term value — especially in a climate like ours here in the Pacific Northwest.
There are countless combinations out there. The key is simplifying the process, working with experienced professionals, and making choices that align with your priorities — whether that’s net-zero performance or simply a warm, quiet, beautiful home.
And that’s where the real conversation begins.
