View Profile
Wonderlin Roofing Systems
- Team
- Understanding
“Not to mention the roof and gutters look fantastic - the company even got kudos from the painter who came and gave an estimate, and another from the county inspector.”
Best Insulation Contractors near Castro Valley, CA
1 of these contractors is based in Castro Valley; the others serve Castro Valley from towns including Oakland (10 mi), Hayward (5 mi) and Moraga (8 mi).
1 open 24/7 · 10 open weekends · 22 rated 4.5+ · 11 show a license
Data verified October 18, 2026
View Profile
Attic Pros
- Warranty
- Work
- Infestation
“It's a noisy procedure, so I left home to do some shopping, and I felt 100% comfortable that they knew what they were doing and would in no way take advantage of my absence.”
View Profile
Century Roof and Solar
- Inspection
- Project
- Tile
“When I shop my solar project, I was suggested to put the solar panels on ground racks instead of roof, or change the roof area under the solar panels from tile to shingles because my roof is light weight tile (some people call it Spanish roof).”
View Profile
Element Home Solutions
- Work
- Attic
- Hvac System
“Eduardo and his team arrived early on the installation date and completed the entire installation in one day, including final integration of s smart thermostat into our home control system.”
View Profile
Marco Roofing
- Responsive
- Work
- Leaking
“Chad was timely with providing us with an estimate, roofing samples, coordinating the roofing permit, completing the job with optimal weather conditions and easy billing.”
View Profile
Alley Cat
- Traps
- Crawl Space
- Disinfecting
“They have promised to come back in several weeks to check the traps and crawl space for signs of anymore infestation, and to continue to come back until there are no rats caught in the traps.”
The 24 contractors listed for Castro Valley, CA insulate attics, walls, crawl spaces and rim joists. Details under each one about materials, hours and the services advertised are copied from the company's own site; star ratings and comments come from public reviews.
Area overview: Castro Valley, CA
The 24 contractors on this page are rated from 4.2 to 5.0 across 2,758 reviews; 6 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise quality (89%), professionalism (83%) and responsiveness (83%). The topics that come up most in reviews of the contractors on this page are "price", "estimates" and "cleanliness". 1 is open around the clock; 9 are open on Saturdays and 6 on Sundays. The services the contractors on this page list most often on their websites are attic insulation (4), rodent proofing (3), attic cleaning (2), attic cleanup (2) and crawl space clean up (2). 11 show a license on their websites; 1 lists staff certifications (GAF) and 13 have a BBB rating of A or A+. Domain records put 14 websites of the contractors on this page at ten or more years old; the oldest dates from 1996. 1 offers emergency call-outs; 1 offers financing or payment plans; 15 give free estimates; 11 are family- or locally-owned and 2 list coupons or special offers. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
How many listings here have a website?
A website is on file for all 24 contractors here. Use it to see which materials they actually install, since a firm that only sprays foam will recommend foam. A contractor with no site is not automatically worse, but you will have to ask on the phone what the site would have told you.
View Profile
American Attic
- Inspection
- Job
- Plastic
“We had a very messy attic With live rodents and they took care of cleaning out old materials, sanitizing the attic come installing new insulation and ceiling all openings.”
View Profile
Master Roofing Company
- Team
- Efficient
- Attention
“The Kwon's both Sunny and Danny made my experience with all the work our facility needed stress free, and that's something that is so needed today when dealing with businesses.”
View Profile
Manada Roofing
- Standing Seam
- Attention
- Gutters
“I got about 5 or 6 quotes and Manada roofing gave me one of the best quotes in term of price and the people seemed nice and not snobby like some contractors are.”
View Profile
Central Bay Roofing & Restoration
- Needs
- Quality
- Team
“I'm an Oakland homeowner and used Central Bay Roofing twice in the past year, once for a complete roof shingle replacement, and once to re-roof the flat top separate building that was pooling water on the property.”
View Profile
Attic Renew 360
- Crawl Space
- Air Ducts
- Money
“They did a great job, Attic deep cleaning, Rodent proofing, they air sealed holes and cracks around my attic and re-insulate with eco friendly insulation”
View Profile
Berkeley Roof Services
“Leo was site supervisor keep things on time working the crew who all did a great job.”
View Profile
Apollo Roofing Company
- Questions
- Rain
- Presentation
“Only fault I can think of is that they didn't identify that my underlying plywood was too thin at the edges for the nails so I had a $1200 add-on when I opted for thicker felt.”
View Profile
Pro Attic Restoration
- Attic Fan
- Crawlspace
- Ladder
“They removed all the old ductwork in my crawlspace as well as the attic, replaced it with new alumaflex ducting, rodent proofed the house, and put down some additional insulation.”
View Profile
Vincent Roofing Co. Inc.
- Desire
“When I initially called I talked to Desire and she guided me through the options that best fit my budget and scenario.”
View Profile
Roof Right Roofing
- Shingles
- Skylights
- Price
“Steve brought out sample of the shingles and other materials (such as flashing, ridge vents, barrier fabric, etc) and went into detail about their roofing process.”
View Profile
Attic Solutions
- Foam
- Crawl Space
- Plan
“Joshua's team arrived a few days later for the job and they removed and replaced the insulation, as well as sealed the attic so no more rats could enter”
View Profile
Magnum Drywall
“Best Drywall company, the best tapers!”
View Profile
Bigham Taylor Roofing
“Great customer service”
View Profile
Johnson's Insulation
- Clean
- Crawl Space
- Fair
“Fast forward to Tuesday haven't heard anything back generally if a contractor of any sort says they will do something and don't you can bet your pants that's how they will operate on the job”
View Profile
General Roofing Co.
- Scope of Work
- Estimate
- Communication
“Due to some of the intricacies of the job, 3 layers of past roofing materials, an attic with blown insulation, landscaping that needed to be protected, and the unknowns of a house built over 100 years ago, we were cautious about who we would hire.”
View Profile
Beck Roofing Company
- Estimate
- Price
“Given that I did not climb up onto the roof myself either before or after, I can't say for sure that they did what they said, but I can say that after two months of a lot of heavy winter rain, we have no sign of any leaks.”
View Profile
All Bay Area Dustless Blasting Sandblasting Contractor
- Coated
- Prices
- Beautiful
“I just came across 7 old frames that had been powder coated and I needed them sandblasted and cleaned up to have them professionally painted to restore their beauty.”
View Profile
Timberline Roofing Solutions
“These are my “go - to” guys for roof inspections.”
Insulation Services in Castro Valley, CA Cost Estimates
Minimum cost
$518
Maximum cost
$3787
National Average
$1775
Avg Per Hour Rates
$71
$1114
$2562
Typical price range is based on 401 cost profiles
Why these companies made our list
Is this page useful? Yes
No
Is there anything wrong with this page?
