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TRUSTED BY SUNNYVALE, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon258
    Verified drywall insulation services reviews

Find Drywall insulation pros in Sunnyvale

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

Serving Sunnyvale, 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 I originally made the request in August and this morning on Nov 10, I got a phone call inquiring if we still needed insulation done.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
Bay Valley Insulation, Inc.
4.6(
192
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"I hired Bay Valley to clean out one attic and blow in insulation to the two attics in my home. Joel came out and did a thorough inspection, explaining everything as he went along. the quote was reasonable and fair. Unfortunately, on the scheduled day the team was overbooked and although I had taken the day off, by the afternoon it was clear they would not have time to do my job. Knowing I was disappointed , they agreed to come the next day, which was Saturday even though they don't work Saturdays. Tony and Henry arrived in the afternoon and worked literally non-stop for hours until they got the job done. They were as clean as such a job allows for and when they left the debris was gone. I would recommend Bay Valley Insulation to anyone but I would also be sure everyone was in sync on the schedule."
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 Sunnyvale, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Small jobs welcome

"I was looking online for insulation contractors, and found Attic Pros, Chris and his team arrived on time installed brand new attic insulation, cleaned our Crawl space and installed insulation, they took photos before and after. I am very happy with the work was completed defiantly recommend these guys."
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%
146 neighbors recently requested a quote
Avatar for Atticare Construction
Atticare Construction
4.5(
177
)
Blown-In Insulation - Install or Upgrade

Serving Sunnyvale, 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 AtticElite Insulation Solutions
AtticElite Insulation Solutions
4.6(
27
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Sunnyvale, 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
35 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 Sunnyvale, 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
Additional Photos
Additional Photos
Additional Photos

+52

Response time2 days
Response rate100%
10 neighbors recently requested a quote
Avatar for Ideal Attic Insulation, Inc.
Ideal Attic Insulation, Inc.
4.8(
6
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"I received several estimates from people but I chose Ideal Attic was my choice for cost and time of day when they could begin working on it which was the very next day. They explained to me what they were going to do and told me when they should be finished. I recommend them to anyone needing heating and insulation work."
Response time3 days
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for USAttic Insulation
USAttic Insulation
5.0(
2
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"wilson and his team arrived at 9am the early side of the window provided. He quickly started his set up began what would turn out to be a long day for his team. Provide clean out of old existing insulation, sanitized attic and sealed and prepped for attic fan and new insulation. Wilson and his team took pictures of all stages of work. Cleaned left area as if they never had been there."
Blown-In Insulation
Cleaning Air sealing
Blown-In Insulation
Blown-In Insulation
Cleaning

+3

3 neighbors recently requested a quote
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Drywall Insulation questions, answered by experts

Drying alone can take 1 to 4 hours to dry to the touch per plaster layer, but some types of plaster take several hours longer to dry. However, this doesn’t mean the job is done because plaster doesn’t fully harden until it cures, which can take a few days to a couple of weeks. It may take even longer if you’re building a new, pretty thick plaster wall. Allow the plaster to cure before painting it.

Plaster that sags or bulges, shows extensive deep cracks, or is crumbling from water damage or simply time may need replacement. Plaster walls can look a little “worn” for a long time before they need replacing. The only real way to know if it needs a replacement is to hire a professional to assess the condition of the plaster.

While not always necessary, you can glue a drywall ceiling in addition to using screws or nails. Drywall is typically secured to ceiling joists with fasteners, which is often sufficient. However, adding construction adhesive can offer benefits like preventing sagging, bridging gaps, and reducing air leaks for better energy efficiency. It may also be used for specific acoustic or insulation needs. On the other hand, many professionals advise against it because properly placed screws make the drywall structural, glue doesn't add strength, and it makes future repairs or replacements significantly more difficult. Ultimately, it's best to follow local building codes and project-specific requirements to decide if adhesive is right for your ceiling.

To maintain plaster walls, inspect them regularly for cracks and seal them early. Clean the walls by dusting regularly or using a gentle, damp cloth. It's also important to avoid moisture exposure. Repainting as needed will help maintain the wall's appearance and longevity.

When used correctly, drywall patch kits can work well. However, there are limitations. Specifically, these kits can only cover holes up to 5 inches in diameter. For anything larger than that, you’ll need to cut out the affected section of drywall and replace it with a new piece. That’s a far more complicated process that involves buying the right type of drywall, finding the wall studs, cutting into your wall, and screwing the replacement drywall in place.

The Sunnyvale, CA homeowners’ guide to drywall insulation services

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