Rise. Restore. Refine.
Premium Window Replacements
Experience panoramic mountain views through high-performance, energy-efficient window systems built for Montana's extreme climate swings.
Your Local Certified Window Installer
Premium Window Selection for Any Home & Every Budget
Through our authorized partnership with Andersen, Pella, Provia, Alside®, Sierra Pacific and Windsor your family benefits from world-class window technology shipped directly to your home. We cut out middleman markups to deliver high-performance glass and reinforced frames built for a lifetime of comfort.







INNOVATIVE FIBREX® TECHNOLOGY
Andersen High-Performance Windows
Upgrade your home with Andersen's exclusive Fibrex® composite material, which fuses the timeless strength of wood with the low maintenance of vinyl. This innovative construction is twice as strong as standard extruded vinyl, allowing for narrower frames and expansive, unobstructed outdoor views.
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Superior Strength Fibrex material is twice as rigid as vinyl, ensuring absolute structural integrity without warping.
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Eco-Friendly Manufactured using 40% reclaimed wood fibers to support highly sustainable building practices.
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Weather Resistant Capable of enduring harsh climates and extreme temperatures without softening or losing shape.
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Hassle-Free Upkeep Guaranteed never to flake, rust, or peel, entirely eliminating the need for scraping and repainting.
TIMELESS WOOD & FIBERGLASS DESIGNS
Pella Premium Architect Series
Pella sets the industry standard for beautifully crafted, highly customizable wood and fiberglass windows. Designed for maximum architectural flexibility, these windows bring warmth and elegance to any room while offering superior weather resistance against harsh climates.
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Custom Aesthetics Available in a vast array of interior wood finishes and exterior cladding colors to match your home perfectly.
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Advanced Insulation Multi-pane glass configurations actively reflect heat to keep your interior comfortable all year.
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Innovative Hardware Features integrated security sensors and sleek, easy-to-use locking mechanisms for peace of mind.
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Noise Reduction Specially engineered glass layers drastically reduce outside noise for a quieter indoor environment.


UNCOMPROMISING VINYL DURABILITY
ProVia Endure™ Vinyl Windows
ProVia offers exceptional all-vinyl window lines engineered with exclusive SunShield® vinyl to deliver long-lasting color retention and high performance. These premium windows are designed to drastically reduce energy transfer, ensuring your home remains cool in the summer and warm in the winter.
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SunShield® Vinyl A uniquely formulated compound that withstands intense UV light and harsh weather without cracking.
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Maximum Insulation Features graphite foam insulation and advanced weatherstripping to completely block drafts and moisture.
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Low Maintenance Highly resistant to rot, insects, and microbial damage for completely hassle-free upkeep.
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Lifetime Protection Backed by a lifetime transferable warranty that guarantees against blistering, pitting, or peeling.
RENEW YOUR SIDING & Pay Nothing Until 2028
Take 20% OFF Your
New Windows
With No Payments & No Interest Until 2028*
Contact us today to start your home's transformation.
Don't let a window replacement project break the bank! Ask our experts about your flexible financing options and government incentives.
*Discount valid until the end of the month. The financing offer is valid upon credit approval.

AESTHETICS AND TECHNOLOGY REDEFINED
Alside Mezzo® & Sovereign Series
Alside delivers high-performance vinyl windows that provide premium architectural elegance without sacrificing energy efficiency. Featuring fusion-welded frames and advanced thermal insulation, these windows are built to dramatically reduce your utility costs while enhancing curb appeal.
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Expanded Daylight EdgeForce™ low-profile frames minimize bulk to create larger, brighter glass areas in your home.
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Thermal Shield Built with warm-edge spacers and specialized gas fills to block summer heat and trap winter warmth.
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Extreme Defense Fortified locking hardware and reinforced composite sashes provide ultimate security.
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Lasting Value Protected by Alside’s comprehensive lifetime limited warranty for absolute peace of mind.
AUTHENTIC CRAFTSMANSHIP
Sierra Pacific Clad-Wood Windows
Sierra Pacific offers the perfect union of natural beauty and rugged durability, featuring real wood interiors protected by heavy-duty extruded aluminum. Their cladding is twice as thick as roll-form alternatives, creating a dent-resistant, fortress-like exterior that can weather the harshest elements.
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CoreGuard Plus™ Advanced wood treatment permanently prevents rotting and swelling right down to the core.
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Extra-Thick Cladding Fully encased in .05" extruded aluminum for unparalleled exterior dent and weather protection.
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Custom Hardwoods Choose from nine different beautiful hardwood interiors to match your home's cabinetry and trim.
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UV & Scratch Resistant AAMA 2604/2605 powder coatings provide exceptional color retention and surface hardness.


VERSATILE VALUE & PERFORMANCE
Windsor Premium Windows
Windsor Windows balances premium mid-to-high-end quality with competitive pricing, offering versatile wood, cellular PVC, and vinyl options. These windows are designed with high-performance LoE 366 glass that regulates how visible and invisible light transmits, actively lowering energy costs year-round.
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Smart Glass Technology Equipped with LoE 366 glass to drastically reduce heat transfer and interior UV damage.
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Design Flexibility Choose from an array of hardware, finishes, and grille patterns for a completely customized look.
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Robust Warranty Backed by an industry-leading 20-year insulated glass warranty and a 10-year hardware guarantee.
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Multi-Material Options Available in classic wood, low-maintenance vinyl, and highly durable cellular PVC configurations.

A Turnkey Investment
The Fenix Exteriors Window Replacement Process
High-performance windows are only as effective as the craftsmanship behind their installation. Our proven, worry-free replacement process ensures your home is protected from drafts and moisture from day one. Relax while our family-owned team handles the heavy lifting to deliver a flawless, energy-efficient upgrade.
Consultation & Measurement
On-site inspection, detailed structural report, and permit processing if required.
Removal & Prep
Old windows removal, flashing & structural plywood health check.
Weatherproofing
Weather-shield wrap & critter protection installed.
Window Installation
Factory-certified, master installation of your new high-efficiency window units.
Cleanup & Walkthrough
Meticulous debris removal, glass cleaning, and a final project walkthrough.
Where Quality Meets Reliability
Why Homeowners Choose Fenix Exteriors

"Jake did a wonderful job of installing our new siding. He's very particular and detailed in his work, which we really appreciated."

Bev Butler

"The Fenix crew was prompt and professional. Our windows were ready for installation ahead of schedule. The day of our installation was smooth and faster than expected. Everything looked perfect, and they cleaned up after themselves. We couldn't be happier"

Jill Pendleton



"Jake and his crew were fantastic. The end product of our new windows exceeded our expectations, and the crew left things better than when they arrived. They were friendly and courteous, answering every question we had. Will definitely use them again for our siding project."

Klint Cleveland

Frequently Asked Questions
Got Window Questions?
We’ve Got You Covered
Planning your window replacement is a big decision. Here are some of the most common questions we get from homeowners across the Western Montana region.
Can your windows withstand severe Montana hail and winter storms?
Yes, we install high-impact, weather-rated windows designed to endure freezing temperatures, heavy snow, and hail without compromising structural integrity or glass strength.
How do new windows eliminate drafts and condensation?
Our expert installation includes premium flashing and modern multi-pane technology to create a completely airtight seal. This permanently blocks drafts and prevents moisture buildup inside your home.
Will your glass protect my interior from the intense mountain sun?
Absolutely. Our windows feature Low-E (low-emissivity) glass coatings that block harmful UV rays, keeping your home cooler in the summer and preventing your furniture and floors from fading.
Do I need to leave my house during the installation process?
Not at all! Our team works efficiently room by room, keeping the work area clean and minimizing disruption. You can comfortably stay at home while we complete your upgrade.
How long does a full home window replacement typically take?
Most standard residential window replacements are completed in just 1 to 2 days, depending on the size of your home and the specific custom sizing required for your frames.
What are the benefits of Argon gas fills and Low-E glass?
Argon gas acts as an invisible layer of insulation between the glass panes, while Low-E coatings reflect heat back to its source. Together, they drastically improve your home's energy efficiency and lower your heating and cooling bills year-round.
No Payments & No Interest Until 2028*
Ready to Transform Your Exterior?
Get a thorough, zero-pressure consultation today. Receive a complete structural inspection of your current siding system to spot hidden vulnerabilities before they cause damage.
*The financing offer is valid upon credit approval.






