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Windows & Sliding Doors

Benefits of Wintek

High Performance Vinyl and Fiberglass Windows & Sliding Doors

We know windows and sliding doors and we sell exceptional windows and sliding doors in West Michigan. Performance, Quality, Installation, Service, Warranty - Wintek is exceptional in the window industry.

We know

windows and sliding doors! 

We have extensive knowledge of our products and can recommend the best solution for your specific project. We can explain the performance and functionality between single hung, double hung, casements, Low E 366, Argon gas, etc., so you can make the best choice.

We understand

construction practices and codes!

We are very familiar with the construction industry since we have been working in it for a very long time. We can help with tempered glass, egress and energy code performance solutions. And yes, we have the latest code book, all 862 pages.

We specify

windows and sliding doors!

We offer take offs directly from prints. Send us your print and we’ll turn around your quote quickly.  If you need replacement windows and sliding doors, we can come out and measure, order your precise window and door sizes and expertly install them.  If you already have a contractor to install your windows, just provide us with your measurements and your new windows and doors will be manufactured to your exact specifications.

We deliver

windows and sliding doors!

We offer prompt delivery of your windows and sliding doors, directly to the job site, exactly when you need them in the Grand Rapids area. Other delivery areas may require a delivery fee.

We service

windows and sliding doors!

We do our own service work which allows us to address issues as soon as they arise and ultimately shorter lead times for resolutions and repairs.

We install

windows and sliding doors!

Our experienced installers will install windows and sliding doors for new construction and addition projects,  as well as replacement window jobs., we have an experienced installation staff. 

Features of our Products

Energy Star Rated

Energy Star rating identifies the windows among the most energy efficient on the market.

Argon Gas

Argon gas helps prevent heat loss.

Low E 366

Low E 366 is the best glass to minimize radiant outside heat gain in the summer, while retaining radiant heat in the winter.

Triple Glazing

Triple Glazing (3 panes of glass) dramatically reduces condensation and thermal transfer and offer incredible energy efficiency.


No stock products, custom size to 1/16″

All products are made to order and can be specified in 1/16″ increments

Paintable/Stainable Interior Finishes

Unique to North Star and Sunrise is the paintable/stainable interior finish – see Window Brochure for an example.

Extensive grill patterns and several profiles

Custom grill patterns and several grill types enhance traditional or contemporary windows and sliding doors.

Transferable Warranty

Windows and sliding doors are covered by a variety of warranties dependent on the manufacturer.

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