10 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Sun Valley: Spray Foam Giants, CR Score 86/100; 5.0★ from 26 Google reviews; open Saturdays until 6 PM.
Most-reviewed: Gale Building Products, 39 Google reviews at 3.8★, 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 Sun Valley insulation contractors are ranked here by CR Score, from 8 published factors. 4 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 | Spray Foam Giants | 86 | 5.0★ (26) | Sparks, 5 mi away | Sat | Overall |
| 2 | Silver State Firestop & Insulation LLC | 86 | 4.6★ (11) | Sparks, 4 mi away | Sat · Sun | — |
| 3 | ALCAL Specialty Contracting Reno - Home Service Division | 85 | 4.6★ (9) | Sparks, 6 mi away | Sat · Sun · Evenings | — |
| 4 | Havelock Wool | 79 | 4.5★ (22) | Reno, 6 mi away | — | — |
| 5 | Extreme Spray Foam of Reno | 79 | 4.8★ (11) | Sun Valley | — | — |
| 6 | Gale Building Products | 79 | 3.8★ (39) | Sparks, 6 mi away | — | Most reviews |
| 7 | Foam King Inc | 76 | 4.8★ (23) | Truckee, 25 mi away | — | — |
| 8 | Jakes Roofing & Coatings | 75 | 5.0★ (6) | Sun Valley | Sat | — |
| 9 | Western Partitions | 72 | 5.0★ (13) | Sparks, 6 mi away | — | — |
| 10 | Go Green Roofing & Insulation | 71 | 4.8★ (6) | Spanish Springs, 13 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 trade focus: 5.0★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based in Sparks, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Sparks, 6 mi away
Ranked #3 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based in Reno, 6 mi away
Ranked #4 because of its Google rating and trade focus: 4.5★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based in Sun Valley
Ranked #5 because of its Google rating and trade focus: 4.8★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Sparks, 6 mi away
Ranked #6 because of its Google rating and review volume: 3.8★ from 39 Google reviews, the most Google reviews on this list (39).
Based in Truckee, 25 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based in Sun Valley
Ranked #8 because of its Google rating and review volume: 5.0★ from 6 Google reviews, 6 Google reviews.
Based in Sparks, 6 mi away
Ranked #9 because of its Google rating and review volume: 5.0★ from 13 Google reviews, 13 Google reviews.
Based in Spanish Springs, 13 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 6 Google reviews, listed on Google as “Roofing contractor”.
20 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 |
|---|---|---|
| Ace Insulation Inc. | 5.0★ (2) | 5 mi |
| American Acoustics INC | In Sun Valley | |
| Anthony's Home Services, LLC | 4 mi | |
| Apple Valley Insulation | 5.0★ (1) | 4 mi |
| Applied Energy Solutions | 3.0★ (1) | 12 mi |
| Bally Refrigerated Boxes Inc | 2.0★ (1) | In Sun Valley |
| Comfortable Attic Services Pros | 3 mi | |
| D&C Maintenance | In Sun Valley | |
| energy masters | 5.0★ (2) | 5 mi |
| Farwest Insulation Contracting | 5 mi | |
| G 2 Group Concepts | 5 mi | |
| Guzman & Son Drywall and Painting | 5.0★ (3) | In Sun Valley |
| JR INSULATION | In Sun Valley | |
| JT Thorpe | 5.0★ (2) | 10 mi |
| Mountain Foam & Coating Co | 5.0★ (2) | 22 mi |
| New Era Roofing, Inc. | 5.0★ (3) | In Sun Valley |
| Sierra Water & Mold Recovery | 5.0★ (78) | In Sun Valley |
| Thermold Insulation LLC | 5.0★ (1) | 21 mi |
| West Coat Drywall LLC | 4.9★ (11) | In Sun Valley |
| West's Mechanical Insulation Specialists | 4 mi |
National price ranges in USD, not adjusted for Sun Valley. 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 Sun Valley 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 Sun Valley 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 |