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TRUSTED BY CASTRO VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon176
    Verified drywall insulation services reviews

Find Drywall insulation pros in Castro Valley

Bay Valley Insulation Inc
4.7(
46
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Castro Valley, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"We needed retrofit wall insulation and after checking around all the listings through AngiesList, Yelp, and others, we found that only Bay Valley and SDI does retrofit wall insulation work. We went with Bay Valley because the price was reasonable and they responded quickly and promptly (can't say this about SDI*). Joel was our estimator and he came out promptly at the time and date indicated. He was thorough and thoughtful on how he approached the job, not overselling or recommending things we didn't need. We live in an older house and he appreciated the home and looked for the most non-invasive method to take care of our un-insulated exterior walls. Bay Valley's approach is to come in from the exterior walls with the typical 2-hole process (high/low) to blow in the cellulose insulation. They sent two guys in and despite a couple snags in the job, they finished the job in one full day. Afterwards, they plugged the holes, textured and primed, and the next day came in to paint (our-supplied) paint. I was really amazed how well and seamless it all looked afterwards. They did a good job cleaning and even moved the cabinets in the garage back where they originally were. The real result? The mornings have been a little bit warmer than last week, but so far the heater has barely turned on over the past couple days. The house already feels warmed and less temperature fluctuations. We already got brand-new attic insulation last Fall, but the wall insulation really did the trick. A definite recommend to anyone who needs a good team to do insulation in their home. * dealing with SDI was a nightmare, unfortunately. With *several* calls about being in the ER, then lots of other excuses, it just didn't seem like they wanted to do the job or something. I originally made the request in August and this morning on Nov 10, I got a phone call inquiring if we still needed insulation done. sigh."
Additional Photos
Recommended by93%of homeowners
Avatar for Greenshield, Inc.
Greenshield, Inc.
4.6(
96
)
Blown-In Insulation - Install or Upgrade

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"This is an awesome company to do business with. They are honest, reliable, and do an outstanding job. My insulation was very old and my upstairs had become unlivable because it was so hot. I sought out 3 bids and I decided to use this company because of the outstanding experience I had in working with them. The person who took my call was very helpful, courteous and warm. They came out right away to inspect and give an estimate. They did not try to upsell and I felt very comfortable in what they said I needed. The installers arrived on time, got the job done, were super conscientious and efficient. I cannot say enough about what a great company this is. My house feels so much better. Do not hesitate to contact them if you need insulation and you will not be sorry."
Response time8 hrs
34 neighbors recently requested a quote
Recommended by95%of homeowners
Bay Valley Insulation, Inc.
4.6(
192
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Castro Valley, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"Had a great experience hiring Bay Valley Insulation. The quote arrived very efficiently and was the price I was looking for. The crew of Tony and Henry arrived inside the scheduled window and work was completed in a timely manner that day. The job looked great in the blown attic and final clean-up was great. Thank you."
Response time1 day
Response rate85%
70 neighbors recently requested a quote
Avatar for Attic Pros
Attic Pros
4.9(
233
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Castro Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Small jobs welcome

"Said Abdullah did a great job of finding and sealing holes that allowed critters to enter our attic. Over-all, AtticPros is doing a very thorough job of sealing our attic, removing the existing insulation and thoroughly cleaning the attic prior to installing new insulation."
Blow-In Attic Insulation
San Jose, CA Attic Insulation Installation
Danville, CA Vapor Barrier Installation
Mill Valley, CA Crawlspace Cleaning
Benicia, CA Attic Cleaning & Insulation

+3137

Response time11 hrs
Response rate94%
142 neighbors recently requested a quote
Avatar for Noble Insulation
Noble Insulation
4.6(
21
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

Noble Insulation Inc. is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 18 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! \n

Closed cell spray foam
Response time2 days
9 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Atticare Construction
Atticare Construction
4.5(
177
)
Blown-In Insulation - Install or Upgrade

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"The crew arrived on time and installed plastic on the floor and walls for protection. They did a good job removing the old insulation and installing new insulation. The crew did a great job cleaning up. Nice professional job."
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%
Recommended by93%of homeowners
Avatar for Rywen Insulation Inc
Rywen Insulation Inc
4.9(
6
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

Rywen Insulation Inc is a licensed and family-owned company proudly serving the Bay Area. We specialize in high-quality insulation services, rodent proofing, and vapor barrier services that help protect your home or business from energy loss, moisture damage, and unwanted intrusions.\n\nWith a strong focus on long-term solutions, we’re committed to improving indoor comfort, enhancing air quality, and increasing energy efficiency. Our team delivers professional results with attention to detail and care on every project.\n\nContact us today to schedule a free estimate and experience reliable service you can count on.

restoration of handrail and concrete stairs
restoration of handrail and concrete stairs
restoration of handrail and concrete stairs
restoration of handrail and concrete stairs
restoration of handrail and concrete stairs

+17

Response time2 days
8 neighbors recently requested a quote
Recommended by16%of homeowners
Avatar for AtticElite Insulation Solutions
AtticElite Insulation Solutions
4.6(
27
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Castro Valley, 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
31 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for American Attics
American Attics
5.0(
8
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Castro Valley, 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
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Additional Photos
Additional Photos
Additional Photos

+52

Response time2 days
Response rate100%
11 neighbors recently requested a quote
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Drywall Insulation questions, answered by experts

A utility knife is sharp enough to score the drywall and it may work in a pinch for outlet box holes. However, one of the best tools for drywall when you need to make exact cuts for an outlet box quickly is a drywall saw. This handheld tool has a longer blade than a utility knife, so it penetrates the thickness of the drywall easily. The design of its handle and the teeth in its blade make it easier to control while cutting quicker than you can with a utility knife.

Knowing what causes drywall damage can help stop it before it starts. Here are some of the most common causes of drywall damage: 

  • Water damage from roof leaks or leaky pipes. 

  • Small holes caused by doorknobs, minor accidents, and rodent infestations. 

  • Wall dents stemming from moving furniture and minor accidents. 

  • Wall cracks that form from a settling foundation or seismic activity. 

  • Nail pops from nails and screws in the walls. 

  • Large holes that are caused by accidents with heavy objects, children and pets, or sporting equipment.

A nail in drywall cannot hold very much—usually only a few pounds. A nail in a stud can add support and hold around 20 pounds. If you are trying to hang something heavier, get some help from drywall anchors—toggle bolts are very strong and able to withstand more weight.

To hide drywall edges, you need to properly apply drywall tape and multiple layers of joint compound. These materials hide the seams between drywall sheets and fill the holes from drywall screws, leaving behind a smooth, flat finish to paint over. Apply joint compound smoothly, and finish the job by sanding the walls to make sure you fully hide drywall edges and other imperfections.

Cracks, holes, water damage, and dents from heavy equipment often require repair.

The Castro Valley, CA homeowners’ guide to drywall insulation services

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