92/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 637 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 637 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 120 N Pacific St, San Marcos, CA 92069
Best Insulation Contractors in San Marcos, CA (2026)
49 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Marcos: EcoGuard Pest Management, CR Score 92/100; 4.9★ from 637 Google reviews; open 7 days a week.
- 3
Best for emergencies (open 24/7): Vista Insulation Inc., posts 24/7 hours; ranked #3 of 49.
- 35
Most-reviewed: Bob Jenson, 1,349 Google reviews at 4.9★, the most of 49 ranked; ranked #35.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
49 San Marcos insulation contractors are ranked here by CR Score, from 8 published factors. 7 are open 24/7, 29 open Saturdays and 24 open Sundays, based on posted hours. The median Google rating is 5.0★ across 49 rated businesses.
Top 10 insulation contractors in San Marcos at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | EcoGuard Pest Management | 92 | 4.9★ (637) | San Marcos | Sat · Sun · Evenings | Overall |
| 2 | EcoGuard Pest Management | 89 | 4.9★ (538) | Coronado, 8 mi away | Sat · Sun · Evenings | — |
| 3 | Vista Insulation Inc. | 89 | 5.0★ (31) | Vista, 3 mi away | 24/7 | Emergencies |
| 4 | Attic Projects Company | 88 | 4.9★ (888) | San Diego, 17 mi away | Sat · Sun | — |
| 5 | Attic Professional | 87 | 5.0★ (197) | Santee, 24 mi away | 24/7 | — |
| 6 | Optimal Insulation Oceanside inc. | 87 | 5.0★ (31) | Oceanside, 12 mi away | 24/7 | — |
| 7 | Attic Advisor | 86 | 4.8★ (90) | Carlsbad, 7 mi away | Sat · Sun · Evenings | — |
| 8 | All Type Insulation Services, Inc. | 86 | 4.9★ (65) | Carlsbad, 7 mi away | Sat · Sun · Evenings | — |
| 9 | Phoenix insulation inc | 86 | 5.0★ (44) | Escondido, 7 mi away | 24/7 | — |
| 10 | Miramar SD Insulation Inc. | 85 | 5.0★ (31) | San Diego, 17 mi away | 24/7 | — |
The 49 best insulation contractors in San Marcos, ranked
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.
Based in Coronado, 8 mi away
89/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 538 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 538 Google reviews
- Hours
- Mon–Sun 7 AM–9 PM
Based in Vista, 3 mi away
89/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 31 Google reviews, open 24/7.
- 5.0★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2244 S Santa Fe Ave Ste H1, Vista, CA 92084
Based in San Diego, 17 mi away
88/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 888 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 888 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 7 AM–4 PM
- Address
- 7840 Dunbrook Rd, San Diego, CA 92126
Based in Santee, 24 mi away
87/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 197 Google reviews, open 24/7.
- 5.0★ from 197 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8733 Magnolia Ave Suite 125, Santee, CA 92071
Based in Oceanside, 12 mi away
87/100CR ScoreRanked #6 because of its Google rating and availability: 5.0★ from 31 Google reviews, open 24/7.
- 5.0★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 303 Garfield St, Oceanside, CA 92054
Based in Carlsbad, 7 mi away
86/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 90 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 90 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat–Sun 9 AM–7 PM
- Address
- 1902 Wright Pl #200, Carlsbad, CA 92008
Based in Carlsbad, 7 mi away
86/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 65 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 65 Google reviews
- Hours
- Mon–Sun 9 AM–7 PM
- Address
- 1902 Wright Pl #200, Carlsbad, CA 92008
Based in Escondido, 7 mi away
86/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 44 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1971 E Washington Ave #3, Escondido, CA 92027
Based in San Diego, 17 mi away
85/100CR ScoreRanked #10 because of its Google rating and availability: 5.0★ from 31 Google reviews, open 24/7.
- 5.0★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7950 Silverton Ave Ste 110, San Diego, CA 92126
Based in San Diego, 21 mi away
84/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 126 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 5044 Ruffner St, San Diego, CA 92111
Based in San Diego, 22 mi away
84/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 144 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 144 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun 9 AM–2 PM
- Address
- 4901 Morena Blvd, San Diego, CA 92117
Based in Carlsbad, 16 mi away
83/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 235 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 235 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
Based in San Marcos
83/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 508 Glenheather Dr, San Marcos, CA 92069
#15 Attic Shield
Based in Escondido, 4 mi away
83/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 56 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 56 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat closed · Sun 9 AM–2 PM
- Address
- 632 Rock Springs Rd, Escondido, CA 92025
Based in San Diego, 21 mi away
82/100CR ScoreRanked #16 because of its Google rating and availability: 4.5★ from 31 Google reviews, open 24/7.
- 4.5★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9530 Chesapeake Dr Suite 502, San Diego, CA 92123
Based in Carlsbad, 21 mi away
81/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 35 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 35 Google reviews
- Hours
- Mon–Sun 7 AM–9 PM
#18 Attic Guard
Based in Escondido, 3 mi away
81/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 76 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 76 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun closed
- Address
- 510 Corporate Dr # F, Escondido, CA 92029
Based in San Diego, 10 mi away
80/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 10806 Willow Ct, San Diego, CA 92127
Based in San Diego, 10 mi away
80/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 16130 W Bernardo Dr, San Diego, CA 92127
Based in San Diego, 17 mi away
80/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 9 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 9389 Dowdy Dr, San Diego, CA 92126
Based in San Diego, 18 mi away
79/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 5660 Eastgate Dr, San Diego, CA 92121
#23 Alma Roofing
Based in San Diego, 24 mi away
78/100CR ScoreRanked #23 because of its Google rating and availability: 5.0★ from 71 Google reviews, open 24/7.
- 5.0★ from 71 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4538 Cass St, San Diego, CA 92109
#24 Attic Guys Inc
Based in Encinitas, 4 mi away
78/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Insulation contractor”.
- 4.5★ from 8 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 9 AM–12 PM · Sun closed
Based in Poway, 13 mi away
78/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 104 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 14781 Pomerado Rd #151, Poway, CA 92064
All 49 insulation contractors
#1 to #25 are shown in full above. Here are #26 to #49, in CR Score order; each links to its profile.
Also serving San Marcos
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 |
|---|---|---|
| A&O Insulation Inc | 5.0★ (2) | 22 mi |
| All Seasons Insulation | 2.0★ (1) | 17 mi |
| Attic Seal Insulation | 5.0★ (1) | 16 mi |
| C.R. Insulation | 4.0★ (2) | 18 mi |
| Cal Spray Foam Insulation | 5.0★ (1) | 21 mi |
| Comfort Barrier Insulation | 5.0★ (2) | 16 mi |
| Cool-Roof Systems | 4.1★ (7) | In San Marcos |
| Eco Shield Insulation | 5.0★ (1) | 14 mi |
| Insul Tech Innovations | 5.0★ (1) | 21 mi |
| Insulate Plus | 5.0★ (2) | 12 mi |
| Insulation Commandos of North San Diego | 5.0★ (1) | 9 mi |
| JC Insulation | 5.0★ (1) | 5 mi |
| JM General Contractors, INC | 5.0★ (1) | In San Marcos |
| Kenyon Plastering of Southern California, Inc. | 4.0★ (15) | In San Marcos |
| RC Solar & Roofing | 4.8★ (32) | In San Marcos |
| Service Partners | 4.9★ (9) | In San Marcos |
| Superior Insulation & Acoustics | 5.0★ (2) | 17 mi |
| The Attic Depot | 5.0★ (2) | 17 mi |
| Total Climate Control Insulation | 5.0★ (2) | 24 mi |
| Vidal Painting Corp | 5.0★ (34) | In San Marcos |
How much do insulation contractors cost in San Marcos?
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 |
How we ranked San Marcos insulation contractors
We scored 49 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 |
Insulation contractors in San Marcos: frequently asked questions
Who is the best insulation contractor in San Marcos?
By CR Score, the highest-ranked insulation contractor in San Marcos, CA is EcoGuard Pest Management with a CR Score of 92/100. It has 4.9★ from 637 Google reviews. It is open 7 days a week. EcoGuard Pest Management (#2) and Vista Insulation Inc. (#3) follow. We ranked 49 insulation contractors on 8 factors, last updated October 22, 2026.
How many insulation contractors are there in San Marcos?
ContractorsRanked ranks 49 insulation contractors serving San Marcos, CA. 3 of them are based in San Marcos; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which insulation contractors in San Marcos are open 24/7?
7 ranked insulation contractors in San Marcos post 24/7 hours. The highest-ranked are Vista Insulation Inc. (#3), Attic Professional (#5) and Optimal Insulation Oceanside inc. (#6). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in San Marcos work on weekends?
29 of 49 ranked insulation contractors post Saturday hours and 24 post Sunday hours. The highest-ranked open Saturdays are EcoGuard Pest Management (#1), EcoGuard Pest Management (#2) and Vista Insulation Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in San Marcos?
Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for San Marcos. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do San Marcos insulation contractors have?
The median Google rating among 49 rated insulation contractors in San Marcos is 5.0★, with a median of 31 reviews. Bob Jenson has the most, 1,349 reviews, and ranks #35. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank insulation contractors?
Each insulation contractor gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do insulation contractors outside San Marcos count in this ranking?
Yes, if they are within 25 mi of the San Marcos city center, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for San Marcos
- October 2026: CR Scores recalculated for 49 insulation contractors serving San Marcos.
More insulation contractors and San Marcos pages
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