84/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 55 Google reviews, open 24/7.
- 5.0★ from 55 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Window Installers in Decatur, IL (2026)
51 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Decatur: DiamondShine WindowWashing, CR Score 84/100; 5.0★ from 55 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Copper Creek Contractors, posts 24/7 hours; ranked #2 of 51.
- 25
Most-reviewed: Sutton's, 534 Google reviews at 4.8★, the most of 51 ranked; ranked #25.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
51 Decatur window installers are ranked here by CR Score, from 8 published factors. 5 are open 24/7, 29 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.8★ across 51 rated businesses.
Top 10 window installers in Decatur at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | DiamondShine WindowWashing | 84 | 5.0★ (55) | Downers Grove, 18 mi away | 24/7 | Overall |
| 2 | Copper Creek Contractors | 81 | 4.9★ (232) | Mahomet, 37 mi away | 24/7 | Emergencies |
| 3 | Feldco Windows, Siding, Doors & Roofing of Springfield | 81 | 4.9★ (284) | Springfield, 38 mi away | Sat · Sun · Evenings | — |
| 4 | Midwest Siding & Windows | 81 | 4.9★ (86) | Decatur | — | — |
| 5 | Rinse&Shine Window Washing | 80 | 5.0★ (11) | Downers Grove, 18 mi away | 24/7 | — |
| 6 | Williams Home Exteriors | 79 | 5.0★ (31) | Kankakee, 18 mi away | Sat · Evenings | — |
| 7 | About Time Window Shine | 78 | 4.8★ (20) | Springfield, 31 mi away | 24/7 | — |
| 8 | Windows Doors & Beyond | 78 | 5.0★ (18) | Frankfort, 18 mi away | Sat · Evenings | — |
| 9 | B & B Glass | 78 | 4.5★ (80) | Decatur | — | — |
| 10 | JP Windows and Doors LLC | 77 | 5.0★ (20) | East Peoria, 18 mi away | Sat · Evenings | — |
The 51 best window installers in Decatur, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Mahomet, 37 mi away
81/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 232 Google reviews, open 24/7.
- 4.9★ from 232 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 807 W Oak St, Mahomet, IL 61853
Based in Springfield, 38 mi away
81/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 284 Google reviews, 284 Google reviews.
- 4.9★ from 284 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–5 PM · Sun 9 AM–3:30 PM
- Address
- 719 Estill Dr, Springfield, IL 62707
Based in Decatur
81/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 86 Google reviews
- Hours
- Mon–Thu 7 AM–4:30 PM · Fri 7 AM–3:30 PM · Sat–Sun closed
- Address
- 2955 N Dinneen St, Decatur, IL 62526
Based in Downers Grove, 18 mi away
80/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 11 Google reviews, open 24/7.
- 5.0★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Kankakee, 18 mi away
79/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 31 Google reviews
- Hours
- Mon–Thu 8 AM–6:30 PM · Fri 8 AM–5 PM · Sat 9 AM–2 PM · Sun closed
Based in Springfield, 31 mi away
78/100CR ScoreRanked #7 because of its Google rating and availability: 4.8★ from 20 Google reviews, open 24/7.
- 4.8★ from 20 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1021 N 3rd St, Riverton, IL 62561
Based in Frankfort, 18 mi away
78/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 18 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–5 PM · Sun closed
#9 B & B Glass
Based in Decatur
78/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.5★ from 80 Google reviews, listed on Google as “Window installation service”.
- 4.5★ from 80 Google reviews
- Hours
- Mon–Fri 7:30 AM–4 PM · Sat–Sun closed
- Address
- 651 E Wood St, Decatur, IL 62523
Based in East Peoria, 18 mi away
77/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 20 Google reviews
- Hours
- Mon–Fri 7 AM–8 PM · Sat 7 AM–6 PM · Sun closed
Based in Decatur
77/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 25 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 25 Google reviews
- Hours
- Mon–Fri 9 AM–4:30 PM · Sat–Sun closed
- Address
- 3134 N Water St, Decatur, IL 62526
Based in Elgin, 17 mi away
77/100CR ScoreRanked #12 because of its Google rating and trade focus: 3.0★ from 4 Google reviews, listed on Google as “Window installation service”.
- 3.0★ from 4 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
Based in Springfield, 39 mi away
75/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 26 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 26 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 2501 Chatham Rd #5891, Springfield, IL 62704
#14 Roofs By Otto's
Based in Douglas, 27 mi away
75/100CR ScoreRanked #14 because of its Google rating and review volume: 5.0★ from 99 Google reviews, 99 Google reviews.
- 5.0★ from 99 Google reviews
- Hours
- Mon–Sat 7 AM–5 PM · Sun closed
- Address
- 2260 N Co Rd 1800 E, Arthur, IL 61911
Based in Lincoln, 30 mi away
75/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Window installation service”.
- 4.8★ from 18 Google reviews
- Hours
- Mon–Fri 8:30 AM–5 PM · Sat 8:30 AM–12 PM · Sun closed
- Address
- 221 S Sherman St, Lincoln, IL 62656
Based in Springfield, 38 mi away
75/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.7★ from 183 Google reviews, listed on Google as “Window installation service”.
- 4.7★ from 183 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 6200 S 2nd St Unit B, Springfield, IL 62711
Based in Clinton, 18 mi away
74/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Window installation service”.
- 4.0★ from 4 Google reviews
- Hours
- Mon–Sat 7 AM–8 PM · Sun closed
Based in Montgomery, 18 mi away
74/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 3 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat 8 AM–12 PM · Sun closed
Based in Lincoln, 30 mi away
74/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.3★ from 24 Google reviews, listed on Google as “Window installation service”.
- 4.3★ from 24 Google reviews
- Hours
- Mon–Thu 9 AM–5 PM · Fri–Sat closed · Sun 9 AM–5 PM
- Address
- 1101 Keokuk St, Lincoln, IL 62656
Based in Decatur
74/100CR ScoreRanked #20 because of its Google rating and review volume: 4.8★ from 82 Google reviews, 82 Google reviews.
- 4.8★ from 82 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 141 W Main St, Decatur, IL 62523
Based in Springfield, 30 mi away
73/100CR ScoreRanked #21 because of its Google rating and review volume: 4.7★ from 119 Google reviews, 119 Google reviews.
- 4.7★ from 119 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 8 AM–5 PM · Sun closed
- Address
- 7460 Rolling Oaks Dr, Riverton, IL 62561
Based in Springfield, 37 mi away
73/100CR ScoreRanked #22 because of its Google rating and availability: 4.0★ from 24 Google reviews, open 24/7.
- 4.0★ from 24 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3110 S 12th St, Springfield, IL 62703
Based in Mattoon, 40 mi away
73/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Window installation service”.
- 4.7★ from 12 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 9 AM–1 PM · Sun closed
- Address
- 920 Dewitt Ave, Mattoon, IL 61938
Based in Decatur
72/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Window cleaning service”.
- 5.0★ from 3 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat 7 AM–4 PM · Sun closed
- Address
- 3845 E Camelot Cir, Decatur, IL 62526
#25 Sutton's
Based in Springfield, 36 mi away
72/100CR ScoreRanked #25 because of its Google rating and review volume: 4.8★ from 534 Google reviews, the most Google reviews on this list (534).
- 4.8★ from 534 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 1926 N Peoria Rd, Springfield, IL 62702
Window installers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 51 ranked window installers here; the rest are on their profiles.
Also serving Decatur
20 more window installers within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| A&w construction | 5.0★ (11) | In Decatur |
| B&G Construction, Inc. | 5.0★ (2) | 18 mi |
| BuggsConstruction LLC | 5.0★ (1) | 29 mi |
| Cardinal Window & Doors | 1.0★ (1) | 27 mi |
| DH Painting & More | 5.0★ (2) | 30 mi |
| Doug Davis Construction | 4.0★ (12) | In Decatur |
| George Adams' Remodeling | 5.0★ (1) | In Decatur |
| J J Swartz Company | 4.5★ (64) | In Decatur |
| Level 5 Exteriors Inc. | 5.0★ (2) | 18 mi |
| Milling Millwork Contracting, Inc. | 5.0★ (1) | 27 mi |
| Montag Hardwood Interiors LLC | 5.0★ (1) | 18 mi |
| Part Time Husband Home Repair | 1.0★ (1) | 38 mi |
| Poorman & Son, LLC | 5.0★ (1) | 34 mi |
| Pratt Home Improvement | 3.0★ (2) | 25 mi |
| Professional Improvements and Home Inspection Services LLC | 1.0★ (1) | 24 mi |
| RLS Construction | In Decatur | |
| Silver Exteriors | 1.0★ (1) | 17 mi |
| Skelley Construction Inc | In Decatur | |
| The Well Dressed Home | 5.0★ (1) | 18 mi |
| Trust Windows and Siding | 5.0★ (1) | 18 mi |
How much do window installers cost in Decatur?
Typical prices in USD, adjusted for Illinois with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,430 | $7,340 | $11,830 | Per project (several windows): typical range of customer-reported projects. US national range × 1.00 East North Central factor (2025 Cost vs. Value Report) | October 2026 |
How we ranked Decatur window installers
We scored 51 Decatur window installers on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Decatur data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Window installers in Decatur: frequently asked questions
Who is the best window installer in Decatur?
By CR Score, the highest-ranked window installer in Decatur, IL is DiamondShine WindowWashing with a CR Score of 84/100. It has 5.0★ from 55 Google reviews. It is open 24/7. Copper Creek Contractors (#2) and Feldco Windows, Siding, Doors & Roofing of Springfield (#3) follow. We ranked 51 window installers on 8 factors, last updated October 22, 2026.
How many window installers are there in Decatur?
ContractorsRanked ranks 51 window installers serving Decatur, IL. 7 of them are based in Decatur; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which window installers in Decatur are open 24/7?
5 ranked window installers in Decatur post 24/7 hours. The highest-ranked are DiamondShine WindowWashing (#1), Copper Creek Contractors (#2) and Rinse&Shine Window Washing (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which window installers in Decatur work on weekends?
29 of 51 ranked window installers post Saturday hours and 10 post Sunday hours. The highest-ranked open Saturdays are DiamondShine WindowWashing (#1), Copper Creek Contractors (#2) and Feldco Windows, Siding, Doors & Roofing of Springfield (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does window replacement cost in Decatur?
Window replacement typically costs $3,430 to $11,830, with $7,340 typical (Per project (several windows): typical range of customer-reported projects. US national range × 1.00 East North Central factor (2025 Cost vs. Value Report)). The range is adjusted for Illinois. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Decatur window installers have?
The median Google rating among 51 rated window installers in Decatur is 4.8★, with a median of 18 reviews. Sutton's has the most, 534 reviews, and ranks #25. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank window installers?
Each window installer gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do window installers outside Decatur count in this ranking?
Yes, if they are within 40 mi of the Decatur city center, our service radius for window installers. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for Decatur
- October 2026: CR Scores recalculated for 51 window installers serving Decatur.
More window installers and Decatur pages
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