10 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Washington: Eco Insulation, CR Score 89/100; 5.0★ from 108 Google reviews; open Saturdays until 10 PM.
Most-reviewed: Hirschi Roofing and Insulation, 84 Google reviews at 4.2★, the most of 10 ranked after Eco Insulation; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
10 Washington insulation contractors are ranked here by CR Score, from 8 published factors. 3 open Saturdays, based on posted hours. The median Google rating is 5.0★ across 10 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Eco Insulation | 89 | 5.0★ (108) | Saint George, 5 mi away | Sat · Evenings | Overall |
| 2 | St. George Insulation | 83 | 4.9★ (18) | Saint George, 4 mi away | Sat · Evenings | — |
| 3 | Sunpro | 80 | 5.0★ (24) | Hurricane, 5 mi away | — | — |
| 4 | Streamline Energy Solutions | 79 | 5.0★ (24) | Saint George, 8 mi away | — | — |
| 5 | Sealed Home Efficiency | 79 | 5.0★ (5) | Saint George, 6 mi away | Sat | — |
| 6 | Hirschi Roofing and Insulation | 79 | 4.2★ (84) | Saint George, 7 mi away | — | Most reviews |
| 7 | USI Cardalls | 76 | 3.3★ (16) | Washington | — | — |
| 8 | Fox Insulation | 74 | 5.0★ (3) | Hurricane, 5 mi away | — | — |
| 9 | Partners Insulation of St George | 74 | 5.0★ (3) | Hurricane, 5 mi away | — | — |
| 10 | D2 Building Solutions | 71 | 4.3★ (30) | Hurricane, 6 mi away | — | — |
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.
Ranked #1 because of its Google rating and review volume: 5.0★ from 108 Google reviews, the most Google reviews on this list (108).
Based in Saint George, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based in Hurricane, 5 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint George, 8 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint George, 6 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint George, 7 mi away
Ranked #6 because of its Google rating and trade focus: 4.2★ from 84 Google reviews, listed on Google as “Insulation contractor”.
Based in Washington
Ranked #7 because of its Google rating and trade focus: 3.3★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based in Hurricane, 5 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based in Hurricane, 5 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based in Hurricane, 6 mi away
Ranked #10 because of its Google rating and review volume: 4.3★ from 30 Google reviews, 30 Google reviews.
National price ranges in USD, not adjusted for Washington. 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 Washington 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 Washington 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 |