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Top-Rated Spray foam insulation pros in San Martin - Updated Nov 2026

Avatar for Nor-Cal Insulation, Inc.
Nor-Cal Insulation, Inc.
4.5(
15
)

Serving San Martin, CA and surrounding areas

Approved

In business since 2009

Free estimates

Small jobs welcome

"Needed to insulate my house before closing escrow, called for a quote on a Monday and they were insulating the very next day. The owner Luis Knows his stuff, very knowledgeable. Would recommend. 👍🏼👍🏼"
Insulation / Spray Foam
Mineral Wool Insulation
Attic Fiberglass Batts
Subfloor Fiberglass Batts W/ Netting
Open Cell Spray Foam / Fiberglass Batts

+5

Response time1 day
Response rate93%
15 neighbors recently requested a quote
Avatar for Attic Pros
Attic Pros
4.6(
102
)
Insulation - Install or Upgrade

Serving San Martin, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"We realized over the weekend that we had a serious problem that needed to be addressed immediately after hearing some tapping/biting sounds around a ceiling speaker in the master bedroom during the weekend of January 20. I found the Attic Pros ad on Sunday night and called to schedule an inspection appointment on Monday, 1/22, and was able get one for 11am - 1pm on Tuesday, 1/23. Asad (Asaullah) called at 11:10am and left me a voicemail saying that he would be to my house in ~25 minutes. He arrived at ~11:30am ready and prepared to do the inspection after asking some questions and I showed him the access doors to the roof and side attic spaces that needed to be looked at. He completed the inspections, showed me some pictures of what he had found, and let me know what options we had to address the rodent problem. One was the lower cost option which included cleaning up the droppings, setting traps, cleaning up as much as possible, but would have us keeping the existing blown foam insulation and trying to find as many potential entry points as possible to patch up. I decided on the second, higher priced option, which removed all of the original blown foam, a thorough clean up and disinfecting of the areas, wire mesh blocking of all potential entry points, traps to catch any remaining live rodents, and installation of new rolled fiberglass insulation. We set up the the two appointment dates for Thursday, 1/25, and Monday, 2/5. The teams arrived on time both days, put down floor covering from the front door to the attic entry closet and isolating plastic sheets in the master bedroom going out to the second floor deck. They ran the big suction hose off the deck, and were able to keep the front door closed as much as possible, as I had asked them because of the current neighborhood rodent problem caused by the new housing development construction going on down the hill from my house. The teams worked both of the two originally scheduled days and got the jobs completed between 4:30pm and 6pm, so that it was not necessary to come back the next day to finish. I paid half of the original cost estimate following both days of work as agreed. Overall, the entire process was great, beginning from the easy and quick scheduling of the initial inspection by Asad, and getting work started two days later. Everyone was very professional, and I believe did a great job. I would definitely recommend Attic Pros to all of my neighbors that I am sure are experiencing similar problems."
Fortify your home’s attic with high-quality insulation and strategic rodent-proofing.
Lock in warmth and lock out pests with expert attic insulation and rodent-proofing.
Transform your attic into a pristine, energy-efficient area with our insulation and sanitation services.
Maximize your attic’s efficiency and hygiene with expert insulation installation and sanitation services.
Create a healthier living space with expert attic insulation installation and deep sanitation.

+3895

Response time9 hrs
Response rate100%
15 neighbors recently requested a quote
Avatar for Atticare Construction
Atticare Construction
4.5(
177
)

Serving San Martin, CA and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"The technician explained every step by step and the company used very good quality materials they give me a one year warranty for rodents and very good warranty for the insulation l think is a very good company l really recomended"
Before Atticare Services
After Properly Sealing the Access
After Insulation Installation
Clean and ready for Insulation Installation
After Insulation Installation

+26

Response time2 hrs
Response rate91%
28 neighbors recently requested a quote
Avatar for AtticElite Insulation Solutions
AtticElite Insulation Solutions
4.6(
27
)

Serving San Martin, CA and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"I actually had both my attic and walls insulated. Great price, on-time, efficient, clean-up and communication. Unusual from most contractors today. I would highly recommend these guys. Milo was our contact."
Get $500 Off Rodent Proofing
Get $500 off crawl space cleanup.
Get $500 off rodent proofing.
Spray Foam Insulation
Before Attic Clean Up

+77

Response time2 days
10 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for American Attics
American Attics
5.0(
8
)
Insulation - Install or Upgrade

Serving San Martin, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"American Attic was everything they promised. Met with the owner , Sam, within a day to get a quote for removal of old insulation, rodent control and install of new insulation. He was professional and explained everything in detail of what was work was going to be done and how long it would take. We scheduled within a week at a reasonable price. His crew were neat, organized and finished on time! We were notified of some extra things that were found while they were on the job but were not pressured to have those things done. We recommend American Attic to friends or family and would definitely use them again."
Additional Photos
Additional Photos
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Additional Photos

+52

Response time2 days
Response rate100%
9 neighbors recently requested a quote
Avatar for Air Sharks
Air Sharks
5.0(
12
)

Serving San Martin, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

Air Sharks delivers expert HVAC services to homeowners across the South Bay, including installation, repair, and maintenance of top brands like Daikin and Lennox. We also specialize in improving indoor air quality with professional ductwork inspection and cleaning.\n\nOwner Khaled Alsaka built Air Sharks on a passion for transforming the HVAC experience through education, collaboration, and top-tier products. We provide personalized consultations and tailored heating and cooling solutions, taking pride in our craftsmanship, attention to detail, and commitment to five-star service.

Daikin Heat Pump Install
Daikin Heat pump Install and Duct Work
Before picture.
BEFORE
Daikin Heat Pump Install

+22

Response time1 day
Response rate100%
21 neighbors recently requested a quote
Avatar for Attic Masters insulation Services
Attic Masters insulation Services
4.8(
111
)

Serving San Martin, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"i can only say good things about working with Attic masters. Great communication, They came on time, protected our floors and hallway from insulation dust, took pictures of the before and after for us so we can get the rebate. overall, very easy and stress free company to work with. I would definitely use again, it was a pleasure to work with true professionals."
HVAC Duct Replacement
Insulation Installation & Attic Cleaning
Air Sealing & Rodent Proofing
New Construction
Vapor Barrier Install

+204

Recommended by94%of homeowners
Avatar for Attic Masters
Attic Masters
4.7(
33
)
Insulation - Install or Upgrade

Serving San Martin, CA and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"Attic master worked at our house to clean, replace insulation with new one and to purify it at the same work.
It took them 2 days to complete this job and it was all being done by a team of 3 people. The old attic was covered with insulation that was removed by a vacuum that is connected to their car. The workers brought a big hose into the attic and worked like this.
After this was done, they spray a special chemical that helped to remove things from the attic (according to them) and then they spry the new insulation.
The house didn't get any dirty and we liked that too.


"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

Recommended by95%of homeowners
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FAQs for spray foam insulation projects in San Martin, CA

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.