33 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in San Marcos: Koala Insulation of Texas Hill Country, CR Score 90/100; 5.0★ from 241 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Jon Wayne Service Company, posts 24/7 hours; ranked #2 of 33.
Most-reviewed: Jon Wayne Service Company, 1,741 Google reviews at 4.9★, the most of 33 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
33 San Marcos insulation contractors are ranked here by CR Score, from 8 published factors. 9 are open 24/7, 24 open Saturdays and 14 open Sundays, based on posted hours. The median Google rating is 4.9★ across 33 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Koala Insulation of Texas Hill Country | 90 | 5.0★ (241) | San Marcos | Sat · Sun · Evenings | Overall |
| 2 | Jon Wayne Service Company | 88 | 4.9★ (1,741) | New Braunfels, 8 mi away | 24/7 | Emergencies, Most reviews |
| 3 | NAJ Spray Foam | 84 | 5.0★ (43) | Austin, 21 mi away | 24/7 | — |
| 4 | Del's Heating & Air Conditioning | 84 | 4.9★ (569) | Buda, 16 mi away | 24/7 | — |
| 5 | Apex Insulation | 83 | 5.0★ (44) | San Marcos | Sat · Evenings | — |
| 6 | Quality HVAC & Refrigeration | 82 | 4.8★ (272) | San Marcos | Sat · Sun · Evenings | — |
| 7 | Roof Repair and Leak Experts | 81 | 4.7★ (231) | New Braunfels, 12 mi away | 24/7 | — |
| 8 | Absolute Pest Management | 81 | 4.9★ (607) | Austin, 22 mi away | Sat | — |
| 9 | Anytime Attic & Home Insulation Service - Seguin Tx | 81 | 4.6★ (11) | Seguin, 21 mi away | 24/7 | — |
| 10 | Joe Cools A/C & Heating | 81 | 4.9★ (367) | Seguin, 21 mi away | Sat | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 241 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Braunfels, 8 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 1,741 Google reviews, the most Google reviews on this list (1,741).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Austin, 21 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 43 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buda, 16 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 569 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Marcos
Ranked #5 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Marcos
Ranked #6 because of its Google rating and review volume: 4.8★ from 272 Google reviews, 272 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Braunfels, 12 mi away
Ranked #7 because of its Google rating and availability: 4.7★ from 231 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Austin, 22 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 607 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Seguin, 21 mi away
Ranked #9 because of its Google rating and availability: 4.6★ from 11 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Seguin, 21 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 367 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Canyon Lake, 12 mi away
Ranked #11 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Austin, 24 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 97 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Austin, 19 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 28 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Braunfels, 18 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Austin, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 102 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kyle, 11 mi away
Ranked #16 because of its Google rating and availability: 5.0★ from 16 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Canyon Lake, 13 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Canyon Lake, 13 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in New Braunfels, 17 mi away
Ranked #19 because of its Google rating and trade focus: 4.5★ from 40 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buda, 13 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 404 Google reviews, 404 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Georgetown, 12 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Austin, 24 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 248 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kyle, 21 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Marcos
Ranked #24 because of its Google rating and trade focus: 4.4★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Austin, 23 mi away
Ranked #25 because of its Google rating and trade focus: 4.6★ from 67 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #33, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Greg's Heating and Air | 75 | 4.9★ (206) | 16 mi |
| 27 | Sunshine | 75 | 3.9★ (11) | 16 mi |
| 28 | Klaus Roofing Systems of Texas Hill Country | 74 | 5.0★ (55) | 14 mi |
| 29 | Beicker Insulation | 70 | 5.0★ (4) | 19 mi |
| 30 | Patriot | 69 | 5.0★ (3) | 14 mi |
| 31 | Wolfpack Roofing | 68 | 4.9★ (79) | 21 mi |
| 32 | Elevation | 65 | 3.8★ (65) | 23 mi |
| 33 | All Tech Foundation Repair | 65 | 4.3★ (6) | 8 mi |
18 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 |
|---|---|---|
| Advanced Industrial Coatings | 10 mi | |
| Air Care Today | 4.3★ (73) | In San Marcos |
| ARP Roofing & Remodeling | In San Marcos | |
| Attic Wrangler LLC | 22 mi | |
| ATX Radiant Barrier & Insulation | 5.0★ (1) | 23 mi |
| Austin Insulation Specialists - HCS | 5.0★ (1) | 14 mi |
| Bay Insulation Contracting Inc | In San Marcos | |
| Beicker Insealation | 1.0★ (1) | 22 mi |
| Diversified Thermal & Moisture Protection | 5.0★ (1) | 21 mi |
| G&M Insulation | 19 mi | |
| Graduate Roofing Contactors of San Marcos | 5.0★ (23) | In San Marcos |
| Rise Foam Solutions | 5.0★ (1) | 14 mi |
| Super Sonic Painting & Spray Foam Insulation | 22 mi | |
| SVB Conglomerate, INC. | 5.0★ (1) | 13 mi |
| Synergy Insulation | 23 mi | |
| Texas Radiant Barrier | 22 mi | |
| Thomas Family Roofing & Construction | 4.8★ (72) | In San Marcos |
| Victor's Attic Solutions | 24 mi |
National price ranges in USD, not adjusted for San Marcos. 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 33 San Marcos 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 San Marcos 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 |