The Treasure Valley's Favorite Remodel
Drive any newer Eagle or Meridian neighborhood on a summer evening and you'll see where the market went: whole back walls open to covered patios, outdoor kitchens, and mountain views. What used to be a custom-home luxury is now the most-requested remodel in the valley, and homes built in the '90s and 2000s with a lonely 6-foot slider are exactly the candidates. The question we answer daily is what it actually costs — so here it is, without the showroom fog.
Installed Price Bands, 2026
| Project scale | Opening | Typical installed range | What that buys |
|---|---|---|---|
| Entry multi-slide | 9–12 ft, 3 panels | ~$8,000–$12,000 | Vinyl or entry fiberglass system in a modestly enlarged opening |
| Mid-size system | 12–16 ft, 3–4 panels | $12,000–$22,000 | Fiberglass or clad-wood panels, new engineered header, full finish work |
| Large engineered wall | 16–24+ ft, 4–6+ panels | $25,000–$30,000s+ | Premium clad-wood or thermally broken aluminum, pocket or stacked, major structural scope |
Figures are complete-project numbers for the Treasure Valley: door system, engineering, permit, framing, installation, and finish carpentry inside and out. Firm pricing follows a free in-home measure, because no two bearing walls carry the same load.
Where the Money Goes
Width and panel count. Glass wall systems price roughly per panel, and each added panel brings hardware, interlocks, and track precision with it. The jump from three panels to five is bigger than it looks on paper.
The header. This is the line item that separates a door purchase from a remodel. Removing 16 feet of bearing wall means a steel or engineered-lumber beam, stamped structural calcs, temporary shoring, and a city permit. On single-story homes it's straightforward; under a second story or a heavy snow-load roof, the beam grows — and so does the number.
Material tier. Vinyl multi-slides open the category affordably. Clad-wood brings furniture-grade interiors and the premium look; thermally broken aluminum carries the thinnest sightlines and the biggest spans. Between bottom and top tier on the same opening, expect the door portion of the budget to roughly double.
Pocket vs. stacked. Stacked panels park in front of each other at one end — simpler, cheaper. Pocketing doors disappear into the wall entirely, which is spectacular and adds framed pocket cavities to the scope.
Threshold detail. Flush sills that erase the indoor-outdoor line take more excavation and drainage work than a standard raised sill. Worth discussing early, hard to change later.
One Scope, One Company
The reason these projects go sideways with door dealers is that a glass wall isn't a door install — it's structural carpentry with a beautiful door at the end. Our advantage after 46 years is that the engineering coordination, permit, demolition, beam, install, and finish trim are all executed by Wood Windows employees under one contract and one warranty. No general contractor to hire, no subcontractor gaps to fall into.
If you're weighing a patio wall against simply upgrading the slider, start with a free in-home measure and get both numbers in writing — our pricing is set annually, so the quote is the price. (208) 376-2200 or the form on this page.
Frequently Asked Questions
What does a multi-slide door cost installed?
Smaller multi-slide systems — think three panels across a 9–12 foot opening — start around $8,000 installed in the Treasure Valley. Mid-size systems in the 12–16 foot range typically land between $12,000 and $22,000, and large engineered walls of 16–24+ feet run $25,000 into the $30,000s and beyond depending on material and panel count.
Why do big-door quotes range so widely?
Because two projects with the same opening width can be very different jobs. Panel count, pocket versus stacked configuration, material tier (vinyl multi-slides versus clad-wood or thermally broken aluminum), the size of the engineered header, and how much wall you're removing all move the number — sometimes by a factor of two on the same wall.
Is the structural engineering really necessary?
Yes, and it should be in the quote, not an asterisk. Cutting a 16-foot hole in a bearing wall means an engineered beam sized for your roof and floor loads, stamped calculations for the permit, and temporary shoring during framing. Skipping or under-sizing that beam is how you get sagging headers and panels that won't glide within a few winters.
Are glass walls freezing in an Idaho winter?
Not the good ones. Modern multi-slides carry insulated Low-E glass, interlocking weather-sealed stiles, and thermally engineered sills, and they're rated under the same NFRC system as windows. We spec glass and sill details for our climate — and we'll show you the numbers for any system we quote.
Sources & Testing Data
Last reviewed 2026-07-05 by Wood Windows Inc — (208) 376-2200