Gen819 Roofing & Solar
Company Overview
Since 2009, Gen819 Roofing & Solar has been dedicated to re-roofing structures across Southern California with skilled, trained, and experienced teams. We focus on metal roofing solutions and TPO membrane roofing for commercial projects. Our workforce is insured and adheres to all legal requirements.
Gen819 Roofing & Solar is a certified installer for major material manufacturers like GAF. We also excel in standing seam metal roofing for both residential and commercial clients.
Gen819 Roofing & Solar boasts a well-trained solar division that serves clients ranging from small residential projects to large-scale industrial solar PV installations, including carport shade structures. Marcus Maedl started his career in solar PV project development in Germany in 2003. Our clients include both institutional and private investors focused on commercial and industrial solar projects.
In 2006, Marcus Maedl took on the role of Regional Manager for Suntechnics, part of the Conergy Group.
In 2007, Marcus Maedl founded ""Applied Technologies - Energy Solutions,"" a subsidiary of Applied Technologies.
In 2009, Marcus Maedl established maedl.solar.inc and Gen819, focusing on residential services.
By 2011, Maedl Solar was rebranded as Generation819 Inc, and began installing in new home communities.
In 2012, Gen819 successfully installed solar systems in over 500 new homes across SoCal.
In 2013, Gen819 partnered with financial institutions to offer residential leases, loans, and power purchase agreements.
In 2014, Gen819 merged with SDF Roofing, broadening our scope to include residential and commercial roofing, particularly in metal and TPO roofing.
In 2015, Gen819 Roofing & Solar introduced energy storage and backup power solutions.
In 2018, we received the installer of the quarter award for CeDur synthetic shake products. Team Gen819 Roofing & Solar is licensed (B-General Contractor, C-39 Roofing & C-10 Electrical), bonded, and fully insured. Our teams operate in Southern California and the central coast. All our crews are on payroll, insured, and we provide worker's compensation.
Marcus Maedl, the founder of Gen819, brings 20 years of experience in supply chain management, silicon wafer manufacturing, solar PV, and roofing.
Gen819 Roofing & Solar stands for quality and customer satisfaction. We strive to build your trust and business by consistently offering superior products and services.
Business Services
- Roof cleaning
- Roof inspection
- New roof installation
- Roof repair
- Roof replacement
- Reroofing
- Skylight installation
- Add to existing system
- Add solar panels on roof
- Add solar shingles on roof
- Solar system installation
- Solar shingle installation
- Solar system maintenance
- Solar system repair
Business Location & Hours
Mon: | 9:00 AM - 5:30 PM |
Tue: | 9:00 AM - 5:30 PM |
Wed: | 9:00 AM - 5:30 PM |
Thu: | 9:00 AM - 5:30 PM |
Fri: | 9:00 AM - 5:30 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

Just installed solar with Marcus and his Gen819 team. Erik and Susie were always available to reach and worked with me each step of the way for approval with the city and finally Southern California Edison. A++ work and highly recommended. Will have them come back for more panels in future for sure. THE BEST.

Marcus worked with us through every step of the project directly.
He is always available for questions and answered all our concerns quickly and thoroughly.

I am very happy with my decision to go with GEN819 for my new metal roof. Beautiful, top quality work and professional service at quoted price. Quick turn around with responses. I highly recommend!

I could not have been more impressed by Gen819. They did a FANTASTIC job on our ADU! They were very reasonably priced, fast and kept our home clean during the whole process!
Marcus the owner is a great guy! I felt very taken care of all the way through the process.
HIGHLY RECOMENDED!

Gen819 gave an accurate quote and completed project on time. Professional company, good work quality. Thanks!

Great service and competitive pricing. Several companies submitted offers and I went with Gen819 for there level of dedication, personal touch and flexibility. Almost all homes in my neighborhood have solar installations and I am proud to say that mine is the prettiest. What is great curb appeal good for if your solar installer messes up the roof with bare conduits? Gen819 listened to all my concerns and personalization requests. All conduit in the roof where possible and the panel was routed exactly to where I wanted it. The very latest solar technology was used, work was meticulous and any post installation concerns were promptly addressed. I also had a flat roof repaired at the same time, Gen819 does it all in one go, no long waiting times. I am a very satisfied customer.

We were referred to Gen819 through a friend.
Marcus came out to look at our roof, which is a flat roof, and gave us a quote very quickly after his visit.
The company filed all of the necessary paperwork and permits. They even moved the panels to areas on the roof we preferred and got the permit approval for that too.
The workers installed were professional and efficient. They cleaned up everything afterwards.
While they were installing, we had a small summer rain shower and it caused some leaks into the house and our garage. They were very quick to come out and fix and paint everything so our house showed no signs of leakage.
Because we have a flat roof, we had them go over everything with a blowtorch to ensure the holes made were completely sealed. We shall see how that worked once it starts raining.

I built a small addition on my house and needed a roofer to complete the job. I sent Marcus, the owner the architectural plans to get a quote. He took the time to come over an inspect the site and gave me a verbal quote of $2000 for the entire job including materials. That was the end of my positive experience. Once the additional was ready for the roof, It was like pulling teeth to get a written quote. Once I did, the quote was $6000, 300% more then the verbal and there was no scope changes.
Obviously I did not hire him and based on my experience, I wouldn't even bother getting a quote. I have never in my life had a written quote come in at 3x the verbal.

Gen819 is a good company to hire for your roofing needs. They were recommended by a friend. They are well priced (had one other estimate) and really nice people to work with. I had an urgent repair need during the rain and Sergio (?) got out to my place the next day and got my leak repaired in one afternoon . Lots of rain but so far zero issues since. I recommend them
Thank you!

I did not end up deciding to replace my roof at this time, but these guys were very professional and I would consider hiring them again in the future when I am ready to finally replace my roof.