Wonderlin Roofing Systems Inc.
Company Overview
Focused on Quality Craftsmanship and Customer Happiness
Wonderlin Roofing Systems, Inc. is a long-standing family-operated firm located in Castro Valley/East Bay Area, established in 1992.
Started by Grover and Larae Wonderlin, our firm was founded on the commitment to offer remarkable quality and superior customer support.
Throughout the years, our skilled team of roofers has consistently achieved and surpassed this goal, reflected in our A+ rating from the Better Business Bureau.
In 2024, we had the honor of being showcased on “Viewpoint With Dennis Quaid,” a documentary series that highlights groundbreaking organizations and people worldwide.
The segment was filmed right here in Castro Valley, California, and aired nationally on CNN, Fox Business, Fox News Channel, CNBC, MSNBC, and HLN.
Business Services
- Gutter addition
- Gutter installation
- Gutter replacement
- Roof cleaning
- Roof inspection
- New roof installation
- Roof repair
- Roof replacement
- Reroofing
- Skylight repair
Business Location & Hours
Mon: | 9:00 AM - 5:00 PM |
Tue: | 9:00 AM - 5:00 PM |
Wed: | 9:00 AM - 5:00 PM |
Thu: | 9:00 AM - 5:00 PM |
Fri: | 9:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

This is a top of the line roofing company! They have been in the roofing business for many years. We had a problem after the roof was installed and it was quickly fixed! Dependable, professional with lots of experience. What more could a local ask for?

I have never been more dissatisfied with a firm in my 40 years as a homeowner. We have called Mr. W back maybe 6 times for him to complete the job -- which in fact was never actually completed by him or his crew. It has been approximately a year and after it rains my ceilings look like they have been sprayed with a fire hose, condensation falls onto the hardwood floors. My house has a flat roof which is clearly a very poor design, but we were so frustrated with every interaction with Wonderlin that we are now paying another roofing company to install a brand new roof rather than attempting to deal with Wonderlin again.

We can't say enough good things about this company. From the estimate to the final install we felt like we were dealing with friends. Everyone was friendly and very professional. In addition, they were prompt in answering our questions and working with the solar company to coordinate the timelines of install. I will absolutely be recommending Wonderlin Roofing to anyone needing a roofing contractor! Thanks Wonderlin, job well done!

Wish I did not have to do this, but after taking off work and rushing home to meet the roofer I get a call while waiting he was not coming. Now they did call to say they were not coming (only after I had been waiting already 45 min).
So in my book of life just showing up on time is most of the battle to getting life right, and if your hiring someone to do work ( because you work to pay them to work) your time is worth money also.
I will say that the person on the phone is very nice, but since they can't make the first call on time for a 6000sf roof ($$) I will take the business to people who know to be onetime, as the first step of doing business.

I recently bought a home (whoo-hoo!), and the inspector said that the front of the roof covering had come loose, creating a potentially leaky situation. He said that it might cost between $600-1,000 to repair, which is a lot, but it seemed important to have it fixed, and in home purchasing, money just flies through the air... So I got in touch immediately with the people who had put on the roof, namely Wonderlin Roofing. They agreed to send someone out promptly, which was much appreciated. Grover Wonderlin came and looked at the roof, saw the part that needed to be repaired (it was less serious than the inspector thought), fixed it in about no time flat, and then charged me nothing. You read that right: $0. He said that the roof was in good shape and that I probably wouldn't need to call for another seven years. Wow. Really impressive. When it comes time to call, I will definitely call them, and you should, too. Outstanding service.

After an inspection for solar panels showed we needed a new roof, we went with Wonderlin Roofing on the recommendations of two friends. The people are fast, professional, and willing to work with you at every juncture. Case in point: I wound up not being able to pay them on-time due to do some incompetence on the part of my refinance broker. (I had the funds, but couldn't tap them: suffice to say, it was complicated and extremely frustrating.) For the next two months, I did what I could to pay Wonderlin in the bits I could grab. They worked with me all through this time, and were incredibly patient. I would definitely recommend them.

They installed roof on our house six yrs ago. We just moved in and had them do an inspection. They were super accommodating and helpful --- and for no charge : )

Ryan and his team at Wonderlin Roofing are top notch! We've used them for various projects over the years including patch work on a rental property we own as well as a completely new roof on our primary residence. The quality of their work is world-class and they go beyond the call of duty to make sure their customers are happy.
In a world where contractors are hit and miss at best, Wonderlin has always delivered great results for us. Add this to the fact that they are a friendly, family-owned local business and it's a pleasure for my wife and I to recommend them unconditionally for anyone looking for roof/gutter service in the Bay Area.

Wonderlin did a great job replacing my house and barn roofs. They were careful, courteous, and professional in every aspect. Without question I would hire them again for any roofing job. They are great people to work with.

Several years ago we had a leaking roof during a rainy season. I contacted several roofing companies. Some never returned the call, some offered temporary fixing. Fortunately, I called Wonderlin Roofing Systems. Mr. Wonderlin came over and found the problem quickly. The price quote was reasonable. I am very grateful that they fixed the leak between showers on the same day. Afterwards, Catherine mailed the warranty letter and invoice to me. I am very impressed with the high quality work they did. Usually it's hard to find roofing companies to give written warranties for repair work. Thank you Mr. Wonderlin, Ryan, and Catherine.