64/100CR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 151 Google reviews, the most in Marathon.
- 5.0★ from 151 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun closed
Best Window Installers in Marathon, FL (2026)
6 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Marathon: Andy's Sliding Glass Door Maintenance inc, CR Score 64/100; 5.0★ from 151 Google reviews.
- 5
Most-reviewed: Keys Window & Door Company, 66 Google reviews at 4.6★, the most of 6 ranked after Andy's Sliding Glass Door Maintenance inc; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
6 Marathon window installers are ranked here by CR Score, from ten published factors. The median Google rating is 4.5★ across 6 rated businesses.
Top 6 window installers in Marathon at a glance
| Rank | Business | CR Score | Google rating | Based in | Best for |
|---|---|---|---|---|---|
| 1 | Andy's Sliding Glass Door Maintenance inc | 64 | 5.0★ (151) | Marathon | Overall |
| 2 | All About Doors & Windows | 59 | 4.5★ (47) | Marathon | — |
| 3 | All Keys Glass Inc | 56 | 3.9★ (32) | Marathon | — |
| 4 | Florida Keys Window | 56 | 4.9★ (22) | Islamorada, 10 mi away | — |
| 5 | Keys Window & Door Company | 50 | 4.6★ (66) | Islamorada, 36 mi away | Most reviews |
| 6 | Lindholm Exteriors | 45 | 4.2★ (43) | Islamorada, 38 mi away | — |
The 6 best window installers in Marathon, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Marathon
59/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.5★ from 47 Google reviews, listed on Google as “Window installation service”.
- 4.5★ from 47 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 2797 Overseas Hwy, Marathon, FL 33050
Based in Marathon
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 3.9★ from 32 Google reviews, listed on Google as “Window installation service”.
- 3.9★ from 32 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 9121 Overseas Hwy, Marathon, FL 33050
Based in Islamorada, 10 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 22 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 22 Google reviews
- Hours
- Mon–Fri 9 AM–4 PM · Sat–Sun closed
Based in Islamorada, 36 mi away
50/100CR ScoreRanked #5 because of its Google rating and review volume: 4.6★ from 66 Google reviews.
- 4.6★ from 66 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 85998 Overseas Hwy, Islamorada, FL 33036
Based in Islamorada, 38 mi away
45/100CR ScoreRanked #6 because of its Google rating and review volume: 4.2★ from 43 Google reviews.
- 4.2★ from 43 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 87899 Overseas Hwy, Islamorada, FL 33036
How much do window installers cost in Marathon?
Typical prices in USD, adjusted for Florida with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,370 | $7,200 | $11,600 | Per project (several windows): typical range of customer-reported projects. US national range × 0.98 South Atlantic factor (2025 Cost vs. Value Report) | October 2026 |
How we ranked Marathon window installers
We scored 6 Marathon window installers on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Marathon data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Window installers in Marathon: frequently asked questions
Who is the best window installer in Marathon?
By CR Score, the highest-ranked window installer in Marathon, FL is Andy's Sliding Glass Door Maintenance inc with a CR Score of 64/100. It has 5.0★ from 151 Google reviews. All About Doors & Windows (#2) and All Keys Glass Inc (#3) follow. We ranked 6 window installers on ten factors, last updated October 22, 2026.
How many window installers are there in Marathon?
ContractorsRanked ranks 6 window installers serving Marathon, FL. 3 of them are based in Marathon; the rest serve it from nearby towns. Counts are as of October 2026.
How much does window replacement cost in Marathon?
Window replacement typically costs $3,370 to $11,600, with $7,200 typical (Per project (several windows): typical range of customer-reported projects. US national range × 0.98 South Atlantic factor (2025 Cost vs. Value Report)). The range is adjusted for Florida. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Marathon window installers have?
The median Google rating among 6 rated window installers in Marathon is 4.5★, with a median of 45 reviews. Andy's Sliding Glass Door Maintenance inc has the most, 151 reviews, and ranks #1. 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 ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do window installers outside Marathon count in this ranking?
Yes, if they are within 40 mi of the Marathon 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.
Can window installers pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Marathon
- October 2026: CR Scores recalculated for 6 window installers serving Marathon.
More window installers and Marathon pages
Window installers near Marathon
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