5 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Alexandria: Deloach Spray Foam Insulation, CR Score 85/100; 5.0★ from 26 Google reviews.
Best for emergencies (open 24/7): Forward Air Heating and Cooling, posts 24/7 hours; ranked #3 of 5.
Most-reviewed: Next Generation Spray Foam and Insulation, 7 Google reviews at 4.4★, the most of 5 ranked after Deloach Spray Foam Insulation; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
5 Alexandria insulation contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 1 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 5.0★ across 5 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Deloach Spray Foam Insulation | 85 | 5.0★ (26) | Pineville, 3 mi away | — | Overall |
| 2 | Next Generation Spray Foam and Insulation | 80 | 4.4★ (7) | Alexandria | Evenings | Most reviews |
| 3 | Forward Air Heating and Cooling | 80 | 5.0★ (3) | Alexandria | 24/7 | Emergencies |
| 4 | Frankie's Air Conditioning & Heating | 76 | 5.0★ (7) | Alexandria | 24/7 | — |
| 5 | Seal Tite Foam Insulation | 74 | 2.3★ (3) | Alexandria | — | — |
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 26 Google reviews, the most Google reviews on this list (26).
Based in Alexandria
Ranked #2 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in Alexandria
Ranked #3 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based in Alexandria
Ranked #4 because of its Google rating and review volume: 5.0★ from 7 Google reviews, 7 Google reviews.
Based in Alexandria
Ranked #5 because of its Google rating and trade focus: 2.3★ from 3 Google reviews, listed on Google as “Insulation contractor”.
National price ranges in USD, not adjusted for Alexandria. 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 5 Alexandria 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 Alexandria 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 |