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Find Insulation pros in Glendora

Avatar for Everguard Home Insulation Inc.
Everguard Home Insulation Inc.
4.8(
199
)

Serving Glendora, CA and surrounding areas

Approved

In business since 1959

Free estimates

Emergency services offered

"Everguard Home Insulation was excellent from start to finish. They provided a competitive quote and followed through with timely, efficient, quality work installing attic insulation. Highly recommend for your next home improvement project"
Additional Photos
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+7

Response time2 days
9 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Insulation Labs
Insulation Labs
4.9(
519
)

Serving Glendora, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Warranties offered

"Hired Insulation Labs in August 2020 after speaking with Oliver and getting his Proposal and photos which were very professional. Insulation Labs removed and replaced the insulation in my crawl space after we were flooded due to neighborâ s sprinklers. Insulation Labs did an excellent job. Oliver and his staff were all extremely efficient. I am impressed by Insulation Labs qualifications, experience and expertise. I highly recommend Insulation Labs for all Insulations jobs. They go above and beyond for their customers."
Fresh Insulation & New Ducts
Completed installation of solar panels
Roofing Projects
Spray foam insulation Projects
Old Insulation & Debris

+121

Response time11 hrs
Response rate89%
28 neighbors recently requested a quote
Avatar for Marathon Insulation
Marathon Insulation
5.0(
16
)

Serving Glendora, CA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Got our attic insulated and immediately felt the difference. The service was great and calling them back in the near future to get my walls insulated as well. Thanks a lot marathon insulation for the job well done!"
Exterior wall drill fill
Newly constructed pool house ready for insulation
Exterior wall drill fill
Pool house insulated with brand new batt insulation
Exterior wall drill fill

+23

Response time6 hrs
11 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Pro Insulation, Inc.
Pro Insulation, Inc.
4.6(
118
)

Serving Glendora, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"I love the insulation. My room has no insulation at all. Every time I entered the room after coming from work, it was like walking in an oven. With the insulation, my room now is cool in the afternoon. The price Pro Insulation, Inc. charged is reasonable. I just love it. It is a good investment."
Wall Insulation job in progress
Completed wall insulation
Response time2 days
50 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Alpha Insulation
Alpha Insulation
4.6(
15
)

Serving Glendora, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Miguel, with Alpha Insulation, was fantastic to work with. Excellent communication, quality work, and fair prices! Would definitely recommend. If you have any insulation needs, Alpha Insulation is the company to call!"
Blow In
Insulation Removal and Air Seal
Insulation Removal
Air Seal
Air Seal

+46

Response time3 days
21 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Insulation Commandos of Southern California
Insulation Commandos of Southern California
4.2(
415
)

Serving Glendora, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"After having a new air conditioning system installed, to replace an old inefficient one, we decided to make sure our attic had the correct insulation as well as the appropriate R-value. Since our home was built in the 1950's, the insulation throughout the attic was minimal. We hired Insulation Commandos to survey and provide us with the appropriate solution. The solution involved removal of the old insulation, cleaning the area, and installing the correct insulation based on our homes location. We now believe we can keep our energy costs down and provide less strain on our AC system. Great job team!"
before and aftert insulation install
insulation remocal service
about us
Wrapped trucks
424 neighbors recently requested a quote
Recommended by87%of homeowners
Hawx Insulation-Los Angeles
4.1(
361
)

Serving Glendora, CA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

At Hawx Pest Control, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. Hawx Premium Pest Control will treat your pests, mosquitos, and more- then keep them away for good. If pests come back between treatments so will we, at no additional cost to you. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote. \n

Recommended by75%of homeowners
All Type Insulation Services, Inc
New to Angi

Serving Glendora, CA and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

All Type Insulation Services, Inc. is an experienced insulation company specializing in residential and commercial properties throughout Southern California. Our corporate structure consists of various departments that contribute to the overall company's mission and goals, ensuring you will receive the knowledge needed to ask the right questions during your project.

13 neighbors recently requested a quote
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Showing 1-10 of 126

FAQs for insulation service projects in Glendora, 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.

The Glendora, CA homeowners’ guide to insulation services

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

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