Get matched with top flat, foam or single ply roofing repairers in Simi Valley, CA

Exceptional Quality. Family Values. Built to Last.\n\nWe know your roof is your home’s first line of defense. Whether you need a quick repair, a complete replacement, or a brand-new installation, we treat every property as if it were our own. Our services are fully customized to your specific needs, budget, and vision—delivering exceptional attention to detail from start to finish.\n\n\n🔨 Our Core Services\nAsphalt Shingle Roofing: Premium installation, seamless replacement, and prompt, reliable repairs.\n\nTile Asphalt Roofing: Skilled craftsmanship designed for maximum durability and standout curb appeal.\n\nFlat Roofing Systems: Dependable, weather-resistant solutions tailored to keep your building secure.\n\n⭐ Why Choose Alfa Roofing?\n20+ Years of Expertise: Industry-proven techniques and deep roofing knowledge you can rely on.\n\nFamily-Owned & Honest: No high-pressure sales—just upfront communication, integrity, and personal service.

"Eduardo was very nice, and easy to work with. He also did a great job and at a totally reasonable price, showed up on time, and finished in a totally reasonable timeframe, and stuck to what the estimate was. Highly recommend him for any roofing repairs or installs you may need."

"Confirmed Roofing did an excellent job on my roof repair!"

"Adam and his exceptional team at Reign Roofing delivered a flawless roofing job with professionalism and efficiency. They arrived on time daily, meticulously cleaned up debris, took great care with repairs, and consistently checked in to ensure my satisfaction. Adam clearly explained the best options, is fully licensed and city-certified, and carries all required insurance. They installed our new flat roof seamlessly, making the entire process smooth and stress-free. I highly recommend Reign Roofing for any roof installation or repairs!"

"Great experience from start to finish. The team was professional, showed up on time, and clearly explained the repair process. They fixed my roof quickly and did high quality work, everything looks solid and well done. Pricing was fair with no surprises, and they made sure everything was clean before leaving. I’d definitely recommend them to anyone needing reliable roofing repairs."

"I had a leak where the garage roof meets the wall and i thought it must be in wall or that flat roof. But they quickly ruled that out and found the leak was under the tiles in the sloped roof above. They proved it to me by pulling off some tiles and showing me the deteriorated paper and wet plywood. Excellent diagnosis."

"California Building Professionals really live up to their name because they are nothing less than professional. They were kind and caring and well-versed in their craft. They explained everything to me in detail and now I know more about roofs than I need to. I have a 2 story home with a flat roof which was no problem for them. The new torch-down roof is all set and the craftsmanship is perfect!"

"So happy that you recommended his services. Alejandro was amazing and just finished doing our garage roof. He worked during the heatwave and never complained and did an "amazing job" and always with a smile. Also the clean-up was done so impeccably nothing left behind; just wonderful work. Alejandro also took the time to get everything we needed to get the permit and passed without any problems. We are so happy with the end product and so happy that we hired Ongoing Roofing, Inc would highly recommend their services."

"Bill came over to my Mom's house and did a complete inspection of the roof. My Mom was concerned that she might need a new roof before the rains come.  Bill was so nice and honest with his discussion with my Mom and me.  He said that she had at least another 10 to 15 years of life left on her roof.  I asked if I could pay him for his time and he said no thanks.  
I have so much respect and appreciation for Bill and Jordan roofing, that when either I or my family needs a roof, I will use them !!
And I will recommend them to my friends !!
"

"Wow! An honest contractor who responds immediately. After looking at my concrete situation, he identified the problem and recommended a quick, inexpensive DIY solution. Great to see honest, sincere people still are out there."