10 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Redding: Knauf Fiberglass, CR Score 90/100; 4.3★ from 137 Google reviews; open 24/7.
Most-reviewed: Tugwell Roofing Co. - Redding Roofing Company, 191 Google reviews at 4.8★, the most of 10 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
10 Redding insulation contractors are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 3 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.8★ across 10 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Knauf Fiberglass | 90 | 4.3★ (137) | Shasta Lake, 5 mi away | 24/7 | Overall |
| 2 | Apex Heating and Air Conditioning, Inc. | 83 | 4.9★ (169) | Anderson, 10 mi away | Sat · Sun | — |
| 3 | Art of the Craft Lath & Plstr | 82 | 4.6★ (7) | Redding | — | — |
| 4 | Cal Spray Foam Insulation | 80 | 4.6★ (9) | Redding | Sat | — |
| 5 | JNG Insulation Pros | 78 | 4.8★ (16) | Redding | — | — |
| 6 | Tugwell Roofing Co. - Redding Roofing Company | 75 | 4.8★ (191) | Anderson, 9 mi away | — | Most reviews |
| 7 | Boster Roofing - Redding Roofing & Insulation Company | 75 | 4.8★ (63) | Anderson, 9 mi away | — | — |
| 8 | Insulation Ninjas | 73 | 5.0★ (6) | Anderson, 11 mi away | — | — |
| 9 | Meek's Installed Insulation - Redding | 72 | 3.8★ (27) | Redding | — | — |
| 10 | Foam Experts Company | 68 | 5.0★ (5) | Shasta Lake, 5 mi away | — | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 4.3★ from 137 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Anderson, 10 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 169 Google reviews, 169 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Redding
Ranked #3 because of its Google rating and trade focus: 4.6★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Redding
Ranked #4 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Redding
Ranked #5 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Anderson, 9 mi away
Ranked #6 because of its Google rating and review volume: 4.8★ from 191 Google reviews, the most Google reviews on this list (191).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Anderson, 9 mi away
Ranked #7 because of its Google rating and review volume: 4.8★ from 63 Google reviews, 63 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Anderson, 11 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Redding
Ranked #9 because of its Google rating and trade focus: 3.8★ from 27 Google reviews, listed on Google as “Truss manufacturer”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Shasta Lake, 5 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
12 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.
| Business | Google rating | Distance |
|---|---|---|
| Allianz Heating & Air | 4.6★ (215) | In Redding |
| California Shingle & Shake Co | 4.7★ (45) | In Redding |
| Cronic Disaster Restoration and Construction | 4.5★ (42) | In Redding |
| DaBella | 4.8★ (575) | In Redding |
| Don's Innovative Insulation | 5.0★ (1) | 9 mi |
| Duct Boss Cleaning Service | 9 mi | |
| Energy Docs | 5.0★ (3) | In Redding |
| Hall's Heating And Air Conditioning | 4.8★ (260) | In Redding |
| Infinity Heating And Air | 5.0★ (124) | In Redding |
| Next Level Energy | 4.7★ (13) | In Redding |
| Redding Heating & AC Repair | 4.8★ (640) | In Redding |
| Top Hat Energy Inc. | 4.9★ (160) | In Redding |
National price ranges in USD, not adjusted for Redding. 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 |
We scored 10 Redding insulation contractors 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 Redding 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 |