Lockport, IL's Highest-Rated Window Installers on Google
Lockport hasn't cleared the bar this site needs from a state license file to earn its own license page. So we searched Google Maps for window replacement company listings in Lockport, IL and ranked the ones that qualified by rating and review count. 8 made the cut here.
Google Maps ratings checked · How we rank
5AIECC climate zone · ENERGY STAR Northern zone
What Lockport's climate means for your window spec
Will County sees about 41.1 inches of precipitation and 33.2 inches of snow in a normal year.
Weather at that level is one more reason the flashing and sill pan under a Lockport window matter as much as the glass sitting in it.
So ask any Lockport contractor how they handle both, not just which brand they carry.
Data: U.S. EPA / DOE, ENERGY STAR, ENERGY STAR Version 7.0 Climate Zones by County/ZIP (Windows, Doors, and Skylights) (V7.0); Pacific Northwest National Laboratory (DOE Building America), Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) (2021 IECC), from the nearest NOAA station 2.9 mi away.
8 top-rated window replacement companies in and near Lockport
Ranked by Google rating weighted against how many people left one, so a perfect score from a handful of reviewers never outranks a strong average built on hundreds. That ranking is not a license check; call the state directly and ask for the contractor's license or registration number.
| Rank | Business | Google rating | Reviews | Category | Area | Google Maps listing |
|---|---|---|---|---|---|---|
| 1 | Renewal by Andersen of Chicago | 1,656 | Window installation service | Lockport 60491 | Google reviews | |
| 2 | DNS Exterior Inc. | 153 | Window installation service | Lockport 60441 | Google reviews | |
| 3 | GiliJay Window Replacement | 40 | Window installation service | Homer Glen 60491 | Google reviews | |
| 4 | Total Home Restoration | 31 | Window installation service | Lockport 60441 | Google reviews | |
| 5 | Relentless Construction | Roofing, Siding, Windows & More | 38 | Window installation service | Homer Glen 60491 | Google reviews | |
| 6 | Window World of Joliet | 579 | Window installation service | Crest Hill 60403 | Google reviews | |
| 7 | Glastronomy Windows and Entry Doors | 17 | Window installation service | Lockport 60441 | Google reviews | |
| 8 | Lockport Window Replacement | 14 | Window installation service | Not listed | Google reviews |
Questions to ask before you sign
- How long have you held your state license, and can I see the number?
- Is this a full-frame replacement or an insert into my existing frame, and why that one?
- Who pulls the permit, and does this change trigger an egress check on a bedroom window?
- What flashing and sill pan will you use, and in what order do you install them?
- If my home was built before 1978, is your crew lead-safe certified for this job?
- What's the completion date in writing, and what happens if the schedule slips?