Fiberglass-clad frames and wood interiors in a wide range of colors.
Builders and homeowners with a $700K to $1.8M SIP build budget who care about how their windows look, not just how they perform.
You want wood interior warmth and a specific aesthetic. The window frame color and finish matter because they're part of the design. Fiberglass-clad windows also offer greater dimensional stability than vinyl, which helps maintain a consistent air seal over the life of the home.
You want someone who understands both the design side and the SIP construction side, and can make sure you don't have to choose between the two.
When the look of your windows matters as much as how they perform, Marvin Elevate is our recommendation. It's the right choice when design flexibility is a priority alongside performance.
Marvin Elevate pairs a Ultrex fiberglass exterior with a pine wood interior. The fiberglass won't expand or contract with temperature changes, and the wood interior gives you the warmth and finish options that vinyl can't match.
Marvin Elevate gives you real design choices: wood interiors you can stain or paint, fiberglass exteriors in a range of colors, and custom sizing down to 1/64" increments. Your windows become part of the architecture, not an afterthought.
8x stronger than vinyl with an acrylic finish 3x thicker than competitive painted options. Resists fading, chalking, peeling, and cracking, even in dark colors.
Stain it, paint it, or order it factory-finished in clear coat, Designer Black, or White. The wood interior brings warmth that vinyl and fiberglass interiors can't replicate.
Standard dual-pane with Low-E and argon, or upgrade to triple-pane on select products. Multiple Low-E coatings available to match your climate zone. Energy Star certified.
Double hung, casement, awning, picture, direct glaze, specialty shapes, bay, and bow. Custom sizes in 1/64" increments. Grilles, simulated divided lites, and decorative glass available.
We begin every project with window packages that meet Energy Star certification for your region of the country. After reviewing your construction plans and talking through your preferences, we'll recommend a window package that lets your SIP home perform to its full potential.
| Climate Zone | U-Factor | Solar Heat Gain Coef. |
|---|---|---|
| Northern | ≤ 0.22 | ≥ 0.17 |
| North-Central | ≤ 0.25 | ≤ 0.40 |
| South-Central | ≤ 0.28 | ≤ 0.23 |
| Southern | ≤ 0.32 | ≤ 0.23 |
Prescriptive requirements per Energy Star
Your SIP home has a design language. The architecture, the finishes, the feel of the space. The windows are part of that language. With Marvin Elevate, you get access to a broad palette of factory colors, wood interior warmth, and custom finish options that let the windows match your vision.
But design flexibility means nothing if the windows don't fit the build. We coordinate directly with your panel manufacturer to make sure every Marvin Elevate window matches your SIP panel specs exactly. Frame depth, rough opening dimensions, and air-seal details all confirmed before the order ships. Your builder gets windows that install cleanly, and your home performs the way it was designed to.
We help you select from Marvin's full range of colors, finishes, and configurations, and make sure every choice is compatible with your SIP wall assembly.
Every window is coordinated with your panel manufacturer's rough opening specs. No guesswork, no field adjustments, no costly rework on site.
When windows arrive sized to the panel, your builder spends less time shimming, adjusting, and troubleshooting. The install goes faster and the seal goes in right the first time.
We handle the spec review, the Marvin coordination, and the supply logistics. You get a single window package, specced correctly, delivered on your timeline.
For a 2,400 sq ft SIP home with typical window count (24–28 openings), installed cost typically ranges from $28,000 to $42,000 depending on size, configuration, and finish customization.
The premium over Tier 1 reflects design flexibility, a broader range of finishes, and the dimensional stability of fiberglass-clad frames. You're paying for a window that performs and looks the way you designed it.
Send us your plans or give us a call to discuss. We'll review your project and get back to you within one business day.
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