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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon532
    Verified window services reviews

Top-Rated Window pros in Lannon - Updated Nov 2026

Avatar for Weather Tight Corporation
Weather Tight Corporation
4.5(
545
)
New Windows - 6 +New Windows - 3-5New Window - Single+9 more

Serving Lannon, WI and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Free estimates

Warranties offered

"Everything went very smoothly. Our installers were: Luke, Colin, Chris, and Hector. They were at our place from November 2-5. All of them were very polite. The game plan we were given at the outset of the project went exactly as proposed. There was one minor glitch with the bay window installment, but that was corrected on December 16th, and of course it was a superb job. Since the installment, we've been extremely happy with the appearance of the new windows. We will need to wait for spring to start opening and closing them. We can't wait...no more sticks to hold up the windows!! All in all, looking back at the research we did on new windows, eventually having Sam over to give his presentation, and ultimately choosing WeatherTight, we are very satisfied with our decision!! Thank you!!"
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+22

Response time12 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for B&K Glass and Door
B&K Glass and Door
5.0(
210
)
Window Glass - Install or Replace

Serving Lannon, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Warranties offered

"Excellent contractor . Great to work with . B & K replaced the window glass in Five Thermopane windows. The window frames were still good so that is why I chose the glass replacement option. Cost, of course, is then far more reasonable. Our windows now are clear - no fogging anymore."
Calhoun Residence
Calhoun Residence
Calhoun Residence
Calhoun Residence
Calhoun Residence

+36

Response time5 hrs
Response rate86%
79 neighbors recently requested a quote
Avatar for HomeSealed Exteriors, LLC
HomeSealed Exteriors, LLC
4.8(
168
)
New Windows - 6 +New Windows - 3-5New Windows - 2+9 more

Serving Lannon, WI and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"They did a great job for a several windows installation. They have a reasonable prices and the materials they used are excellent quality. The people they have are pro's and top notch and they cleaned up their mess."
Additional Photos
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+46

Response time1 day
102 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Mad City Windows & Baths
Mad City Windows & Baths
4.4(
838
)
New Windows - 6 +New Windows - 3-5New Windows - 2

Serving Lannon, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Warranties offered

"The installers were wonderful. Friendly, knowledgeable, fast and CLEAN! Youâ d barely know theyâ d been there!. And our sales person really helped us understand the best, but not most expensive windows for our house. If I need more windows they will be back!"
windows
siding
siding
siding
windows

+20

Response time10 mins
8261 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Squeegee Wonders
Squeegee Wonders
4.8(
31
)
Window Cleaning

Serving Lannon, WI and surrounding areas

Approved

In business since 2007

Free estimates

Customers say: Terrific value

"They were very pleasant and very meticulous. My windows have never been this clean. They cleaned the windows, screens and wiped out the window wells. Were there for a long time but cannot really complain as they provided a wonderful service!"
Commercial Window Cleanin
Window Cleaning
Occasional Window Cleanin
Recommended by100%of homeowners
Avatar for Empire Home Remodeling, Inc.
Empire Home Remodeling, Inc.
4.7(
120
)
New Windows - 6 +New Windows - 3-5

Serving Lannon, WI and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"They really go after you for the sale but after the sale is made they really fall apart. I got an email that my windows were ordered over a week after I ordered them, and an email 5 or 5 weeks later saying they came in. It took them another month to install them. Nearly all the quotes I got were the same but Empire used ?sign now? tactics to get my sale. If I could go back I would not have signed for the small discount and I would have gone with another company offering the same price with no pressure. My windows are fine and the subcontractors that they sent to install them were friendly."
Asphalt Roof
Basement Hopper Windows
Bay & Bow Windows
Casement & Awning Windows
Concrete Driveway

+83

Response time1 day
170 neighbors recently requested a quote
Recommended by86%of homeowners
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Windows FAQs, answered by experts

Most properly installed and maintained windows last between 15 and 20 years. Fiberglass windows last much longer than your average window. Since they don’t warp from temperature changes, rust, or rot, you might be able to hold onto fiberglass windows for up to 40 years. On the other hand, poorly maintained wood windows may only last for a few years.

DIY is possible with the proper tools. Professional installation ensures a proper seal and energy efficiency.

Casement windows are more expensive than some other window types, such as single-hung or double-hung windows. However, casement windows are not the most expensive type of window. Bow and bay window costs tend to be the highest, because they involve multiple large windows that jut out from the exterior of the home.

ENERGY STAR®-certified windows are the most energy-efficient windows on the market. This certification means that the window meets strict efficiency guidelines set forth by the Environmental Protection Agency. While they might cost more upfront, they can save you money on your energy bills in the long run. ENERGY STAR®-certified windows lower household energy bills by an average of 12% annually.

Yes, you can always make an existing window bigger, but the job complexity varies widely depending on the location of the window and the framing around it. Exterior walls are always load-bearing, so making windows wider will require structural changes that make for a more complex but doable project. Making windows taller often won’t require structural changes.

The Lannon, WI homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.