The Starmark Evo 7500 Series

Starmark Evo offers an elegant and modern design inspired by traditional colonial windows.

Combining the energy efficiency of vinyl with the timeless beauty of a classic wood window, the Starmark Evo sets a new standard by surpassing even the most stringent Energy Star guidelines.

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Floor-to-ceiling casement windows in a lovely dining area

What Makes the Starmark Evo Window so Impressive?

The Starmark Evo window is meticulously crafted with Advanced Polymeric Composite, giving it beauty, performance and durability that outshines It’s competitors in today’s crowded market.

Cross-section of Starmark window frame

Advanced Polymeric Composite 

The construction material of the Starmark Evo is what really makes it a stand out amongst its peers.  APC provides a solid sash and frame construction that does not require additional insulation. These rigid, interlocking pieces allow for a tight seal to minimize air leakage and drafts.

Premium Glass Coating and Spacer Options

The Starmark Evo uses an advanced robotic system that uses heat and compression for a flawless glass spacer seal, preventing condensation for a clear, damage-free view. The Starmark Evo Heat Seal Coating harnesses the sun's warmth for increased energy efficiency in cold climates. Alternatively, Sun Seal Coating blocks solar heat, keeping interiors cool and comfortable in warmer areas.

Cross section of a double-hung window frame
Cross-section of an Okna 500 vinyl window frame

Solid Sill Construction

A one piece solid sill improves drainage and eliminates the need for weep holes that tend to collect water and freeze in the winter months. The unique dual dam construction also decreases air infiltration and improves overall window performance.

Keystone Certification

All Starmark Evo windows have met the KeyStone Certification Guidelines that ensure each window is built to its stated specifications. Certification also includes annual factory inspections to ensure quality management systems meet rigid standards. This means peace of mind for homeowners.

Graphic for the Keystone Fenestration Certification Program

Why Do We Prefer Okna Windows?

Okna Windows has built an industry reputation by combining state of the art equipment, advanced technologies, and dedicated craftsmanship.We know Okna Windows are built to last and will keep your home looking beautiful and your family comfortable for years to come.

For replacement windows, air infiltration (or, Air Leakage) refers to the amount of outside air that can sneak in through tiny gaps or openings in the newly installed windows. Minimizing Air Infiltration helps make your windows more energy efficient by keeping the air you pay to heat or cool… In.  Plus, unlike solar coatings, tight windows improve your energy efficiency 24 hours a day!  One of the main reasons we primarily recommend Okna windows is that they were specifically designed to be air tight.  The Okna EnviroStar Double Hung has an Air Infiltration of .01! That's the best rating on the market!

Design pressure refers to the amount of external pressure that windows are designed to withstand without compromising their structural integrity. It is a measure of the window's ability to resist forces such as wind, water, and other environmental factors.  Okna Windows have some of the highest DP ratings available for residential replacement windows.

Okna Windows are renowned for their exceptional appearance. Crafted with meticulous attention to detail, these windows exude elegance and style. Their sleek profiles and clean lines give them a timeless appeal that can enhance the aesthetic of any home. Okna offers a wide range of design options, allowing homeowners to choose from various styles, finishes, and colors to match their unique preferences and architectural requirements. The quality craftsmanship and precision manufacturing of Okna Windows result in a flawless finish that exudes sophistication.

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Our Reviews Speak
For Themselves

After nearly 2 decades in business, client satisfaction is still what drives us to provide the highest level of quality in our service and in our products. We are proud of our reputation and do everything in our power to continue to exceed our clients' expectations.

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Everyone at WoW went above and beyond, and exceeded my already high expectations. Our house is now warmer, quieter, and looks so much better!

Simply put, it was one of the best contracting / house project experiences we've had.

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