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ContractorsRanked

Best Insulation Contractors in Belvidere, IL (2026)

13 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Belvidere: Comfort 1st Insulation, CR Score 63/100; 4.9★ from 271 Google reviews; open 7 days a week.

  2. 5

    Most-reviewed: Greenlink Energy Solutions, 203 Google reviews at 4.9★, the most of 13 ranked after Comfort 1st Insulation; ranked #5.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

13 Belvidere insulation contractors are ranked here by CR Score, from ten published factors. 7 open Saturdays and 5 open Sundays, based on posted hours. The median Google rating is 4.8★ across 13 rated businesses.

Top 10 insulation contractors in Belvidere at a glance

Top 10 insulation contractors in Belvidere at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Comfort 1st Insulation634.9★ (271)Rockford, 13 mi awaySat · SunOverall
2Rockford Spray Foam Insulation555.0★ (24)Loves Park, 11 mi away——
3EcoHome Expert, Inc. KANGA ROOF554.3★ (58)BelvidereSat · Sun—
4Metro Insulation544.7★ (34)Rockford, 14 mi away——
5Greenlink Energy Solutions544.9★ (203)Rockford, 9 mi away—Most reviews
6North Shore Insulation Sycamore535.0★ (17)Sycamore, 20 mi awaySat—
7Handyman Connection of Rockford524.6★ (54)Rockford, 8 mi awaySat—
8Gallagly Drywall Inc523.0★ (4)Harvard, 19 mi awaySat · Sun—
9Everest Roofing514.8★ (67)Rockford, 10 mi away——
10R&R Climate Inc505.0★ (19)Huntley, 16 mi awaySat · Sun · Evenings—

The 13 best insulation contractors in Belvidere, 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.

  1. Ranked #1 in Belvidere

    #1 Comfort 1st Insulation

    Based in Rockford, 13 mi away

    63/100CR Score

    Ranked #1 because of its Google rating and review volume: 4.9★ from 271 Google reviews, the most in Belvidere.

    • 4.9★ from 271 Google reviews
    Hours
    Mon–Fri 7:30 AM–5 PM · Sat–Sun 9 AM–5 PM
    Address
    612 Harrison Ave, Rockford, IL 61104
    View profile for Comfort 1st Insulation(833) 244-7283

  4. #4 Metro Insulation

    Based in Rockford, 14 mi away

    54/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.7★ from 34 Google reviews, listed on Google as “Insulation contractor”.

    • 4.7★ from 34 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2119 N Central Ave, Rockford, IL 61101
    View profile for Metro Insulation(815) 986-7736

  9. #9 Everest Roofing

    Based in Rockford, 10 mi away

    51/100CR Score

    Ranked #9 because of its Google rating and review volume: 4.8★ from 67 Google reviews.

    • 4.8★ from 67 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    4701 Hydraulic Rd, Rockford, IL 61108
    View profile for Everest Roofing(779) 368-0826

  11. #11 Dwyer Foam Insulation

    Based in Beloit, 24 mi away

    49/100CR Score

    Ranked #11 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Fri 7 AM–8 PM · Sat closed · Sun 7 AM–8 PM
    Address
    2600 W Creedy Rd, Beloit, WI 53511
    View profile for Dwyer Foam Insulation(608) 362-1322

Also serving Belvidere

17 more insulation contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked insulation contractors serving Belvidere
BusinessGoogle ratingDistance
Energy Smart Insulation3.0★ (1)23 mi
Genoa Insulation14 mi
Greenlink Energy Solutions18 mi
Home Guard Insulation4.0★ (2)10 mi
Insulation Service10 mi
Morfin BuildersIn Belvidere
Rockford Insulation Pros13 mi
Saunders Insulation Specialists12 mi
Schoonover Insulation Inc3.0★ (1)20 mi
Southwest Insulation, Inc.9 mi
Sprinkmann Sons Corporation13 mi
Superior Attic Fans5.0★ (2)9 mi
Superior Roofing5.0★ (1)In Belvidere
TBD Painting Inc.24 mi
TWINS CONSTRUCTION OF ROCKFORD LLC5.0★ (24)In Belvidere
Ultimate Roof Coaters11 mi
Wildlife Animal & Bee Removal Guys3.0★ (2)10 mi

How much do insulation contractors cost in Belvidere?

National price ranges in USD, not adjusted for Belvidere. Each row names its basis and the month we checked it.

How much do insulation contractors cost in Belvidere?
JobLowTypicalHighBasisChecked
Attic insulation$1,700$2,100$2,500Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national rangeOctober 2026

How we ranked Belvidere insulation contractors

We scored 13 Belvidere 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Belvidere data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Insulation contractors in Belvidere: frequently asked questions

Who is the best insulation contractor in Belvidere?

By CR Score, the highest-ranked insulation contractor in Belvidere, IL is Comfort 1st Insulation with a CR Score of 63/100. It has 4.9★ from 271 Google reviews. It is open 7 days a week. Rockford Spray Foam Insulation (#2) and EcoHome Expert, Inc. KANGA ROOF (#3) follow. We ranked 13 insulation contractors on ten factors, last updated October 22, 2026.

How many insulation contractors are there in Belvidere?

ContractorsRanked ranks 13 insulation contractors serving Belvidere, IL. 1 of them is based in Belvidere; the rest serve it from nearby towns. Another 17 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which insulation contractors in Belvidere work on weekends?

7 of 13 ranked insulation contractors post Saturday hours and 5 post Sunday hours. The highest-ranked open Saturdays are Comfort 1st Insulation (#1), EcoHome Expert, Inc. KANGA ROOF (#3) and North Shore Insulation Sycamore (#6). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Belvidere?

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 Belvidere. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Belvidere insulation contractors have?

The median Google rating among 13 rated insulation contractors in Belvidere is 4.8★, with a median of 24 reviews. Comfort 1st Insulation has the most, 271 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 Belvidere count in this ranking?

Yes, if they are within 25 mi of the Belvidere 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 Belvidere

  1. October 2026: CR Scores recalculated for 13 insulation contractors serving Belvidere.

More insulation contractors and Belvidere pages

Other trades in Belvidere