34 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Lake Purdy: Vault Spray Foam, CR Score 58/100; 5.0★ from 103 Google reviews; open Saturdays until 7 PM.
Best for emergencies (open 24/7): Comfort Dynamics Cooling, Heating, Plumbing & Electrical, posts 24/7 hours; ranked #4 of 34.
Most-reviewed: OnTime Service, 8,308 Google reviews at 4.9★, the most of 34 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
34 Lake Purdy insulation contractors are ranked here by CR Score, from ten published factors. 4 are open 24/7, 14 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 4.9★ across 34 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Vault Spray Foam | 58 | 5.0★ (103) | Hoover, 6 mi away | Sat · Evenings | Overall |
| 2 | OnTime Service | 58 | 4.9★ (8,308) | Hoover, 5 mi away | Sat · Evenings | Most reviews |
| 3 | Eco Three | 56 | 4.9★ (218) | Vestavia Hills, 6 mi away | — | — |
| 4 | Comfort Dynamics Cooling, Heating, Plumbing & Electrical | 56 | 4.7★ (2,254) | Birmingham, 10 mi away | 24/7 | Emergencies |
| 5 | Koala Insulation of Birmingham | 56 | 5.0★ (165) | Birmingham, 9 mi away | — | — |
| 6 | Alabama Spray Foam Insulation | 56 | 5.0★ (50) | Birmingham, 9 mi away | Sat | — |
| 7 | Southern Industries Home Improvements | 54 | 4.6★ (367) | Birmingham, 7 mi away | 24/7 | — |
| 8 | Hoover Spray Foam Insulation | 54 | 5.0★ (31) | Hoover, 13 mi away | Sat | — |
| 9 | Alabama Roofing Professionals | 54 | 4.9★ (376) | Birmingham, 16 mi away | 24/7 | — |
| 10 | iFoam | 53 | 5.0★ (3) | Birmingham, 4 mi away | Sat · Evenings | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hoover, 5 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 8,308 Google reviews, the most in Lake Purdy.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vestavia Hills, 6 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 218 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 10 mi away
Ranked #4 because of its Google rating and review volume: 4.7★ from 2,254 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 9 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 165 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 9 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 50 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 7 mi away
Ranked #7 because of its Google rating and review volume: 4.6★ from 367 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hoover, 13 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 16 mi away
Ranked #9 because of its Google rating and review volume: 4.9★ from 376 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 4 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Tuscaloosa, 10 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 9 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 40 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Irondale, 8 mi away
Ranked #13 because of its Google rating and review volume: 4.9★ from 452 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 9 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 11 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 9 mi away
Ranked #16 because of its Google rating and trade focus: 3.7★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Attalla, 19 mi away
Ranked #17 because of its Google rating and review volume: 5.0★ from 149 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 15 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 14 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 3 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 303 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bessemer, 12 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alabaster, 7 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alabaster, 10 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Birmingham, 9 mi away
Ranked #24 because of its Google rating and trade focus: 4.3★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hueytown, 23 mi away
Ranked #25 because of its Google rating and trade focus: 4.5★ from 30 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Lake Purdy. 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 34 Lake Purdy 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 Lake Purdy 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 |