Window quotes are hard to compare because two contractors can propose fundamentally different work and describe both as “replacing your windows.” Understanding which one you are being quoted is most of the battle.
Insert versus full-frame is the main fork
An insert (also called a retrofit or pocket replacement) removes the old sash and installs a new window inside the existing frame. The exterior trim and siding stay untouched. It is faster, cleaner, and cheaper.
A full-frame replacement removes everything back to the rough opening, including the old frame. The opening gets re-flashed, the new window is set and properly integrated with the weather barrier, and the trim is rebuilt.
The insert is the right call when the existing frame is sound, square, and dry. The full-frame is the right call when it is not, and also when you are re-siding anyway, because the siding is already off.
The catch: an insert sits inside the old frame, so the glass area is slightly smaller than what you have now. On a large picture window nobody notices. On an already-small bathroom window it is visible.
How many, and how big
Windows are priced per opening, and openings are not equal. A standard bedroom slider and a two-story stairwell window are different money for obvious reasons, and specialty shapes - arches, octagons, true divided lites - are considerably more than the rectangles.
Doing the whole house at once is meaningfully cheaper per window than doing four now and six later. Setup, staging and disposal are largely fixed costs that get spread across the count.
Frame material
Vinyl is the volume choice in this market and, in a mild wet climate like ours, performs well. It does not need painting, it does not rot, and modern welded frames are dimensionally stable.
Fiberglass costs more, is stiffer, expands and contracts less than vinyl, and takes a finish. Wood-clad is a different tier again and is usually an architectural decision rather than a performance one. We put the two most-compared options side by side in vinyl versus fiberglass windows.
The glass package
This is where quotes hide differences. Double-pane low-E with an argon fill is the sensible Pacific Northwest baseline, and the specific low-E coating matters more here than in a hot climate because our problem is retaining heat through a long grey winter rather than rejecting summer sun.
Triple-pane exists and is oversold in this climate. It adds weight and cost for a comfort gain most Clark County homes will not notice, and the money usually does more work elsewhere on the envelope.
Trim, inside and out
Interior trim is the part homeowners forget. A full-frame replacement disturbs the interior casing and stool, and somebody has to put it back. Whether that is in the quote, and whether it is paint-ready or finished, is a real difference between bids.
Exterior trim on a full-frame has to be re-detailed and re-flashed. On an insert it generally does not get touched.
What is found once the old window is out
The recurring Clark County discovery is rot at the sill, caused by a window that was never correctly flashed and has been quietly wetting the framing below it for years. On late-90s and early-2000s subdivision homes in Salmon Creek and Orchards, builder-grade windows installed without sill pans are common enough that we price for the possibility rather than being surprised by it.
An estimate that states the rot-repair rate up front is doing you a favor.
Why we do not print a per-window price
Because “per window” means nothing until you know insert or full-frame, and the same house quoted both ways produces two very different totals that are both legitimate. Publishing one number would mislead whichever reader does not match it.
On every window replacement we measure each opening, tell you which approach it needs and why, and where an insert will do the job we say so rather than quoting the bigger scope.
Bundling with siding
If siding is also on the list, do the windows during the re-side. The openings are exposed once, the flashing gets done correctly with the weather-resistive barrier rather than around it, and you pay for one mobilization instead of two. It is the single biggest saving available on window work and it only exists if the two projects are sequenced together.
Two things move the number in opposite directions and both are worth knowing before you gather quotes. On a large rural property, window replacement in Battle Ground is quoted per opening precisely so the weather side can go first and the sheltered elevations later. On the older Portland stock, window work in Portland more often needs full-frame because a century-old sill has taken more water than anyone expects, and there the honest first question is whether the original sash is worth repairing rather than replacing at all.
What to ask
- Is this quote insert or full-frame, and why that choice for my house?
- What is the glass package, specifically?
- Who puts the interior trim back, and is it finished or paint-ready?
- What is the rate if you find rot at the sill?
- Is the window flashed to the weather barrier, or caulked to the trim?
Quality Master installs vinyl replacement windows across Clark County, including bay and bow units, sliders and patio doors. Free measure and written estimate, with insert and full-frame priced separately where both are genuinely options.