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TRUSTED BY SAN MARCOS, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon330
    Verified drywall insulation services reviews

Top-Rated Drywall insulation pros in San Marcos - Updated Nov 2026

Avatar for Insulation Commandos of Temecula Valley and North San Diego
Insulation Commandos of Temecula Valley and North San Diego
5.0(
14
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving San Marcos, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"The owner of the company Jason Taylor spent time in my attic before we contracted with them so he could give me good and correct information. He also participated in the work of shooting in the insulation. He was very hands-on. Donâ t usually expect this attention from the owner/boss Was very pleased."
Blow In Fiberglass
Attic Cleaning
Before
Insulation Commandos
On Jobsite

+3

Response time11 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for ACH Insulation
ACH Insulation
4.6(
47
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving San Marcos, CA and surrounding areas

Approved

In business since 1991

Free estimates

Warranties offered

"Great company to work with. Very professional and courteous. They did a great job insulating my home and you canâ t tell where the work was done. They weâ re respectful of my property, worked fast & efficiently and cleaned everything up when completed. I highly recommend this company!"
Stage 1
Stage 2
Stage 3
Stage 4
Stage 5

+15

Response time11 hrs
8 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Ecotech Pro Inc
Ecotech Pro Inc
5.0(
17
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving San Marcos, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Yes. Billy said everyone was great on install date. Omar was helpful and communicated effectively. Team worked well together and were efficient. Team was respectful of our property and cleaned up after work done. All of the team members being available was excellent to get install in one day. We hopefully will enjoy the benefits of the insulation and all went as anticipated with install. Very glad we had it done. Leo was excellent with pre install quote and arranging for install. We got a few quotes . We paid highest quote to have the work done quickly which met our needs. Thank you for the excellent service"
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
New Attic blow-in insulation.
Heating and Air Conditioning Project

+55

Response time1 day
Response rate100%
27 neighbors recently requested a quote
Attic Advisor
4.9(
14
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving San Marcos, CA and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Rafael and his company are great people to work with. Their in-depth estimate and assessment of the attic is unparalleled, not to mention competitive. They were very flexible with accommodating our needs on our schedule. Very responsive Manager too, would reply to my calls and text almost immediately. I really appreciate how hard working and efficient these guys are. I had other workers doing work on our house at the same time and they were also impressed at how clean they left the attic before installing the new insulation. Rafael values your business and his work and attitude definitely demonstrate it. Call them you won't regret it."
Insulation clean up
Insulation clean up
Response time1 day
Response rate88%
25 neighbors recently requested a quote
Avatar for California Attic & Build Corp.
California Attic & Build Corp.
4.6(
19
)
Blown-In Insulation - Install or Upgrade

Serving San Marcos, CA and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"I spent thousands of dollars on a popular pest control company and three months later the problem was worse! I canceled the year long contract they put me on and contacted California Attic and build. Ben and Dan came out and professionally assessed my situation and guaranteed the work they would do. Within a few days the problem was solved. I can finally sleep at night!"
My jobs
My jobs
My jobs
My jobs
Response time1 day
Response rate96%
133 neighbors recently requested a quote
Avatar for Guardian Insulation, Inc.
Guardian Insulation, Inc.
4.7(
63
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving San Marcos, CA and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"Love this company! Only good things to say. Price was very competitive or better. Showed up on time. Took care of attic insulation and wall insulation. I am going to hire them again and happy to recommend to anyone."
Blown Cellulose
Installing Cellulsoe Insulation
Air Sealing Attic Penetrations
Exterior Wall Insulation
Exterior Wall Insulation Patching

+1

Response time1 day
Response rate93%
Recommended by96%of homeowners
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Drywall Insulation FAQs, answered by experts

You can technically just paint over hairline cracks in plaster since these cracks are often harmless, but this will mostly be a waste of paint. Paint will only hide the hairline crack for a few months before it shows up again. The best solution is to repair the crack with flexible filler or joint compound before repainting.

If you already have plaster walls and ceilings, adding new plaster costs $2 to $10 per square foot. For an average-sized room, that would come out to $1,200 to $10,000. However, the cost to replace plaster with drywall is higher—running between $720 and $1,250 for a 10-by-8-foot wall or ceiling (not including drywall finishing).

Costs range from $500 to $5,000, depending on damage size, labor, and finishing requirements.

Whether you can reuse a drywall anchor depends on its type, material, and how it is removed. Plastic anchors, such as expansion or self-drilling types, are generally considered single-use because they are designed to expand and are likely to break or become deformed upon removal. Metal anchors, like toggle bolts, are more durable and can often be reused if they are not damaged during extraction. However, with toggle bolts, the toggle mechanism can fall inside the wall when the bolt is removed, making it difficult to retrieve. If an anchor is damaged or must be cut for removal, it cannot be reused regardless of its material.

The person’s skill will affect how many drywall sheets they can hang in one day. Some people can hang 10 or more sheets in a day, while others may only hang six or seven sheets. It also depends on the framing complexity since custom cutting and fitting the drywall can prolong the process.

The San Marcos, CA homeowners’ guide to drywall insulation services

From average costs to expert advice, get all the answers you need to get your job done.