Most homeowners replacing windows are not looking for the fanciest window on the market. They want every window in the house to open easily, seal tight and stop the drafts, at a price that makes doing the whole house realistic. That is where MI Windows and Doors fits. Rock Solid Exteriors sells and installs MI vinyl replacement windows and door walls throughout Macomb, Oakland and Lapeer County.
Rock Solid Exteriors is a family-owned, locally owned and operated exterior contractor in Clinton Township, in business since 1997. Call (844) 757-6543 or book a free in-home window estimate. For our complete guide to replacing windows, see window replacement in Metro Detroit.
MI Windows and Doors at a Glance
- History: started in 1947 as Metal Industries, with more than 75 years in the window business
- Headquarters: Gratz, Pennsylvania
- Products: vinyl and aluminum windows and doors, including sliding patio doors (door walls)
- Company: part of MITER Brands, which also includes Milgard
- Where we fit in: MI makes the windows; we measure, order and install them, and we are your local contact for the installation
Why Homeowners Choose MI
Whole-house value
Replacing 15 or 20 windows at once adds up quickly. MI’s vinyl windows are priced to make whole-house replacement practical, so you can do every window now instead of spreading the job over years with mismatched windows in the meantime.
Vinyl that suits Michigan
Vinyl frames do not need painting, do not rot, and insulate well. For most Michigan homes, a quality vinyl window with an energy-efficient glass package is the sensible middle ground between cost and performance.
Styles and colors
MI offers the common replacement styles, including double hung, sliders, casements and picture windows, in a range of colors, so you can match the look of your house.
Door walls
An old, drafty sliding door wall is often the least efficient opening in the house. MI makes sliding patio doors that can be replaced along with the windows, so everything matches.
MI Windows and Doors vs. ProVia
We sell both brands, so we are not pushing one. A quick comparison:
| MI Windows and Doors | ProVia | |
|---|---|---|
| Price position | Budget-friendly to mid-range | Upper end |
| Best for | Whole-house replacement, rentals, homes you may sell in a few years | Long-term homes, custom colors and details, feature windows |
| Customization | Common styles and colors | Broad color, grille and hardware choices, built to order |
| Door walls | Yes, sliding patio doors | Ask at your estimate |
At your estimate we can price the same openings in both brands so you can see the difference in dollars, not just features.
How to Compare Any Window Quote
- Check the NFRC label for U-factor (lower holds heat better) and solar heat gain.
- Look for ENERGY STAR certification for the Northern zone, which covers Michigan, on the exact configuration quoted.
- Ask about the glass package: panes, low-E coatings, gas fill.
- Ask how the windows will be installed: insert replacement into the existing frame, or full-frame replacement.
- Ask what happens outside: how the exterior trim will be finished and sealed.
Our Installation Process
- In-home estimate. We check every opening, go over styles and colors, and give you a written estimate.
- Measure and order. Openings are measured carefully and the windows are ordered to size.
- Permits. Our crews pull city permits where required.
- Remove and prepare. Old windows come out, and each opening is checked for rot or damage.
- Install, insulate and seal. Windows are set level and square, insulated around the frame, flashed and sealed.
- Trim, cleanup and walkthrough. Trim is finished inside and out, and we show you how everything operates.
What MI Windows Cost
Published 2026 Michigan figures put replacement windows at about $1,300 to $3,700 per window installed across brands. One Michigan price guide lists vinyl double hung windows at about $1,500 to $2,400 and vinyl casements at about $1,800 to $2,800 installed. MI’s vinyl lines generally sit toward the value end of those ranges. These are typical published ranges, not a Rock Solid quote. Your price depends on the number of windows, sizes, styles, glass package, colors and installation method. 0% financing for 60 months is available on approved credit, and veterans receive a 10% discount. See financing.
MI Windows and Doors FAQ
Where are MI windows made?
MI Windows and Doors is headquartered in Gratz, Pennsylvania, and operates manufacturing plants in several states.
Who do I call about my MI windows?
For questions about windows we installed, call us at (844) 757-6543. For product questions about MI windows installed by someone else, contact MI Windows and Doors through the manufacturer’s website.
Are MI windows good for Michigan winters?
Choose a configuration that is ENERGY STAR certified for the Northern zone, and have it installed and sealed properly. Installation quality matters as much as the window for drafts and condensation.
Can you replace my door wall at the same time?
Yes. Replacing sliding patio doors along with the windows keeps colors and hardware matched.
MI Windows Across Southeast Michigan
We install MI Windows and Doors products in Clinton Township, Sterling Heights, Macomb Township, Shelby Township, Warren, St. Clair Shores, Chesterfield, Roseville, Mount Clemens, Troy, Rochester Hills and Lapeer. See finished work in our window gallery.
Get a Free Window Estimate
Call (844) 757-6543 or request your free in-home estimate. Office hours: Monday to Friday 9 AM to 8 PM, Saturday 9 AM to 3 PM, closed Sunday. Michigan Residential Builder License 2102205396.
Rock Solid Exteriors, 42452 Hayes Rd #2a, Clinton Township, MI 48038.