61/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 44 Google reviews, the most in Norwalk.
- 4.8★ from 44 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 110 Cleveland Rd, Norwalk, OH 44857
Best Insulation Contractors in Norwalk, OH (2026)
7 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Norwalk: Revolutionary Insulation, LLC, CR Score 61/100; 4.8★ from 44 Google reviews.
- 2
Most-reviewed: Extol of Ohio, 24 Google reviews at 3.2★, the most of 7 ranked after Revolutionary Insulation, LLC; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
7 Norwalk insulation contractors are ranked here by CR Score, from ten published factors. 2 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.5★ across 7 rated businesses.
Top 7 insulation contractors in Norwalk at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Revolutionary Insulation, LLC | 61 | 4.8★ (44) | Norwalk | — | Overall |
| 2 | Extol of Ohio | 55 | 3.2★ (24) | Norwalk | — | Most reviews |
| 3 | North Central Insulation Kousma Division | 53 | 4.5★ (19) | Willard, 15 mi away | — | — |
| 4 | 5 Star Insulation, LLC | 51 | 4.9★ (16) | Lorain, 24 mi away | — | — |
| 5 | Keller Attic Insulation & Chimney Cleaning Services | 50 | 3.5★ (11) | Sandusky, 14 mi away | Sat · Sun · Evenings | — |
| 6 | Northern Spray Foam LLC | 50 | 5.0★ (4) | Bellevue, 12 mi away | — | — |
| 7 | Vermilion's Roofing Pros | 48 | 4.3★ (10) | Vermilion, 18 mi away | Sat · Sun · Evenings | — |
The 7 best insulation contractors in Norwalk, 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 Norwalk
55/100CR ScoreRanked #2 because of its Google rating and trade focus: 3.2★ from 24 Google reviews, listed on Google as “Insulation contractor”.
- 3.2★ from 24 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 208 Republic St, Norwalk, OH 44857
Based in Willard, 15 mi away
53/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.5★ from 19 Google reviews, listed on Google as “Insulation contractor”.
- 4.5★ from 19 Google reviews
- Hours
- Mon–Fri 10 AM–5 PM · Sat–Sun closed
- Address
- 3728 OH-103, Willard, OH 44890
Based in Lorain, 24 mi away
51/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 16 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 16 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 4850 W Erie Ave, Lorain, OH 44053
Based in Sandusky, 14 mi away
50/100CR ScoreRanked #5 because of its Google rating and trade focus: 3.5★ from 11 Google reviews, listed on Google as “General contractor”.
- 3.5★ from 11 Google reviews
- Hours
- Mon–Sun 7 AM–9:30 PM
- Address
- 2005 Caldwell St, Sandusky, OH 44870
Based in Bellevue, 12 mi away
50/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
Based in Vermilion, 18 mi away
48/100CR ScoreRanked #7 because of its Google rating and review volume: 4.3★ from 10 Google reviews.
- 4.3★ from 10 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 555 Main St, Vermilion, OH 44089
How much do insulation contractors cost in Norwalk?
National price ranges in USD, not adjusted for Norwalk. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Attic insulation | $1,700 | $2,100 | $2,500 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range | October 2026 |
How we ranked Norwalk insulation contractors
We scored 7 Norwalk insulation contractors 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 Norwalk 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 |
Insulation contractors in Norwalk: frequently asked questions
Who is the best insulation contractor in Norwalk?
By CR Score, the highest-ranked insulation contractor in Norwalk, OH is Revolutionary Insulation, LLC with a CR Score of 61/100. It has 4.8★ from 44 Google reviews. Extol of Ohio (#2) and North Central Insulation Kousma Division (#3) follow. We ranked 7 insulation contractors on ten factors, last updated October 22, 2026.
How many insulation contractors are there in Norwalk?
ContractorsRanked ranks 7 insulation contractors serving Norwalk, OH. 2 of them are based in Norwalk; the rest serve it from nearby towns. Counts are as of October 2026.
Which insulation contractors in Norwalk work on weekends?
2 of 7 ranked insulation contractors post Saturday hours and 2 post Sunday hours. The highest-ranked open Saturdays are Keller Attic Insulation & Chimney Cleaning Services (#5) and Vermilion's Roofing Pros (#7). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Norwalk?
Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Norwalk. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Norwalk insulation contractors have?
The median Google rating among 7 rated insulation contractors in Norwalk is 4.5★, with a median of 16 reviews. Revolutionary Insulation, LLC has the most, 44 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank insulation contractors?
Each insulation contractor 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 insulation contractors outside Norwalk count in this ranking?
Yes, if they are within 25 mi of the Norwalk city center, our service radius for insulation contractors. 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 insulation contractors 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 Norwalk
- October 2026: CR Scores recalculated for 7 insulation contractors serving Norwalk.
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