8 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Waverly: RetroFoam Iowa, CR Score 60/100; 4.7★ from 69 Google reviews.
Best for emergencies (open 24/7): Solar spray foam insulation inc., posts 24/7 hours; ranked #2 of 8.
Most-reviewed: DeFord Spray Foam & Concrete Lifting, 48 Google reviews at 5.0★, the most of 8 ranked after RetroFoam Iowa; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
8 Waverly insulation contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 1 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 5.0★ across 8 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | RetroFoam Iowa | 60 | 4.7★ (69) | Waterloo, 18 mi away | — | Overall |
| 2 | Solar spray foam insulation inc. | 59 | 5.0★ (6) | Elgin, 10 mi away | 24/7 | Emergencies |
| 3 | Midwest Foam and Insulation, Inc. | 58 | 5.0★ (25) | Cedar Falls, 10 mi away | — | — |
| 4 | South Construction and Insulation LLC | 54 | 5.0★ (10) | Waverly | — | — |
| 5 | DeFord Spray Foam & Concrete Lifting | 54 | 5.0★ (48) | Waterloo, 20 mi away | — | Most reviews |
| 6 | Kinzler Construction Services | 52 | 4.9★ (7) | Cedar Falls, 20 mi away | — | — |
| 7 | iFOAM Insulation | 51 | 5.0★ (4) | Cedar Falls, 16 mi away | — | — |
| 8 | Weber Urethane Insulation Inc | 49 | 5.0★ (5) | Waterloo, 19 mi away | — | — |
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 review volume: 4.7★ from 69 Google reviews, the most in Waverly.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Elgin, 10 mi away
Ranked #2 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 Cedar Falls, 10 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waverly
Ranked #4 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waterloo, 20 mi away
Ranked #5 because of its Google rating and review volume: 5.0★ from 48 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cedar Falls, 20 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cedar Falls, 16 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waterloo, 19 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Roofing contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
National price ranges in USD, not adjusted for Waverly. 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 8 Waverly 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 Waverly 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 |