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    Mosema Services

    4.9 (171 reviews)
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    100%

    Services - Mosema Services

    Rooftop solar panel cleaning

    Rooftop solar shingles cleaning

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    Helped remediate this issue in less than hour!  Cleaned the spout and fixed fitment!
    Roland R.

    Just finished fixing an issue with our detached gutter! Responsive! Still got back to me even After business hours and was quick to set an appointment the very next day. Sent a photo and he got right to work exactly at 8 as agreed! Punctual, responsive and great quality work while explaining exactly what the issue was and the steps he will take to remediate your issue. Thanks again Alejandro!

    Identified cracked joint

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    Photo of Ryan S.
    281
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    17 days ago

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    Monica D.

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    10 days ago

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    Monica D.

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    Photo of Ian S.
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    9 months ago

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    4 months ago

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    3 months ago

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    9 months ago

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    3 months ago

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    9 months ago

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    5 months ago

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    5 months ago

    Great customer service and dedicated work. Not one problem with Alejandro and team. Did what they said they were going to do on time

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    10 months ago

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    Alejandro D.

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    5 months ago

    Consciencious. Takes pride in providing good service. Cleared a very high gutter for us. will use him again.

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    Photo of Luna S.
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    7 months ago

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    2 years ago

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    Alejandro D.

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    Photo of A D.
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    9 months ago

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    9 months ago

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    3 years ago

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    Alejandro D.

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    2 years ago

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    1 year ago

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    Alejandro D.

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    3 years ago

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    4 years ago

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    Alejandro D.

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    1 year ago

    They had to come back for taller ladder to fix leaky gutter and remove a satellite dish

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    2 years ago

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    2 years ago

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    2 years ago

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    Alejandro D.

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    4 years ago

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    Alejandro D.

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    Photo of Tim H.
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    1 year ago

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    Alejandro D.

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    Photo of Joe F.
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    5 years ago

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    3 years ago

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    2 years ago

    Responsive and courteous. Competitve pricing. They did a great clean up job and I would use them again!

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    Alejandro D.

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    2 years ago

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    5 years ago

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    6 years ago

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    Alejandro D.

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    3 years ago

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    Alejandro D.

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    6 years ago

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    Alejandro D.

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    2 years ago

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    2 years ago

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    3 years ago

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    Alejandro D.

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    3 years ago

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    4 years ago

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    Alejandro D.

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    Page 1 of 5

    Ask the Community - Mosema Services

    Review Highlights - Mosema Services

    When contacted, Alejandro came out promptly to do a visual inspection and give us a firm bid on the project.

    Mentioned in 96 reviews

    Read more highlights

    Maciel Roofing Construction

    Maciel Roofing Construction

    4.8
    (124 reviews)

    We had a great experience with this roofing company. Pete, Luis and Isala were responsive…read morethroughout the process for our roof replacement and addressed our questions and concerns. The crew that was onsite was professional, punctual, and completed the job within one day. What really stood out was their attention to detail, not only in their work, but also in the cleanup process. The crew made sure everything was thoroughly cleaned up before leaving, and our property looked spotless. We truly appreciate their efficiency and professionalism and would highly recommend them to anyone in need of roofing services.

    We engaged a roofer to assess several rust-through spots occurring on five long panels. Upon…read moreinspection, the roofer immediately attributed the cause of the rust to the solar installer, effectively deflecting responsibility. However, the evidence does not support this conclusion. Our roof consists of two levels, and we observed rust on several spots across five long panels--many of which are not adjacent to the solar installation. Furthermore, the upper level of the roof, which has no solar panels whatsoever, also exhibits couple similar rust spots. These observations strongly suggest that the rust is not caused by the solar installation but rather stems from a material or manufacturing defect. Despite these panels carrying a 50-year life warranty, the roofer was quick to claim that the rust is not covered under the manufacturer's warranty. This is deeply disappointing, particularly given the clear evidence that the damage extends well beyond any area impacted by the solar work. The roofer demonstrated no willingness to help address the issue and offered no solution for the roof leak currently occurring at the lower level. The lack of accountability and absence of any proposed remediation is unacceptable given the scope of the defects observed.

    Roofing Solutions

    Roofing Solutions

    4.9
    (44 reviews)

    I recently hired Roofing Solutions for a full roof replacement and new gutter system, and I…read morecouldn't be happier with the experience. From the detailed proposal to the transparent contract, Danny addressed both my immediate roofing needs and long-term improvements all at a fair price. The crew arrived on time, and Ivan was onsite to ensure the project was completed as promised. The work was thoroughly documented, and any additional repairs, such as replacing rotten wood, were clearly explained with photos before any work proceeded. The project was completed on schedule using high-quality materials, and the craftsmanship is outstanding. The crew also did an excellent job cleaning up, provided extra roof tiles for future repairs at no charge, and even repaired my bird-proofing netting for free. I highly recommend Roofing Solutions to anyone considering roofing work. Danny and Ivan were professional, honest, communicative, and a pleasure to work with.

    They might be fine for new roofs but don't call them for repairs. Danny came out to inspect our…read moreroof and immediately recommended a new roof. He didn't offer an option for repair until I asked and instead went straight into discussing shingle colors and availability. Typical sales scare tactics were used like telling us a leak was from condensation due to the lack of ridge vents. We have gable vents and so does every other house on the block. By his logic, every old house without ridge vents should be leaking water. I've been in my attic, there's no condensation issue. Their price for a new roof seems fair but given our roof is 12-15 years old with two leaks, it's far from needing a full replacement. They also offered no warranty if we went with a repair. He also estimated my roof to be 25 years old when my home inspection and other roofers estimated 10-15 years old.

    Apollo Roofing Company

    Apollo Roofing Company

    4.7
    (233 reviews)

    Grateful to Shahar Barzilai project manager for his time and effort to help us complete our roofing…read moreproject. The crew did an amazing job from day one to the end of the project. Highly recommend Apollo roofing company to anyone who needs roofing work. Excellent job. Five stars for sure. Concepcion F.

    We have known we needed our roof repaired for a while, but it turned out it needed replaced! I…read morecalled 3 highly reviewed roofing companies in the Bay Area. 2 came out and gave me quotes, 1 no showed. Out of the 2 that came out, I choose to go forward with Apollo Roofing. I chose them for 2 major reasons. 1) they were going to deal with the scheduling of the removal and réinstallation of our solar panels. And 2) Shahar was so kind, informative, and honest during our consultation. He was through and kept us updated every step of the way. When our project finally started the crew were so respectful and kind! We found way more damage than we expected which resulted in our quote going up. However, due to Shahar being honest at the consultation we knew this was a possibility so it wasn't super shocking. The crew was great at cleaning up at the end of every day, which we appreciate as we have chickens, ducks, a puppy and cat as well as a child who are outside. When the project was done, there were a few concerns we had, we talk to Shahar and he quickly corrected and had the crew fix the items. Our roof is beautiful and will hopefully last many many years to come. I am thankful we went with Apollo Roofing and Happy Shahar was our project manager.

    Wonderlin Roofing Systems

    Wonderlin Roofing Systems

    4.7
    (114 reviews)

    We had two leaks and contacted several roofers and ultimately went with Wonderlin. Grover, the…read moreowner, inspected our roof himself and gave an honest assessment. He broke down what needed immediate attention, what could wait, and what wasn't worth redoing until we need a full roof replacement. Their office staff is very responsive to emails. Pricing was more reasonable and they provided a warranty for their repair work. The shingle work was straight and looks good. Chimney reflashing was a bit sloppy with the sealant. Crew was friendly and easy to work with.

    Our family needed a roofing company we could trust to replace our parents Castro Valley home's…read moreroof. Nothing is standard about this home including a massive one-of-a-kind full custom multi-level roof that included: mounted electrical solar panels, and separate roof mounted pool solar collector panels, 2 chimneys, a flattop roof section with adjustable skylights that need to be replaced. We also needed an outbuilding's flattop roof and skylights replaced. We chose Wonderlin Roofing Systems for the following reasons * Extensive expertise * Long history in the Castro Valley area * Excellent references * Willing to work with clients Grover Wonderlin and his office Manager Marianne worked with us throughout the entire process and were always polite, knowledgeable, answering our questions, provided excellent advice. Before starting the tear-off, they covered the pool with the largest tarp I have ever seen. I was impressed with their clean-up, walking around the home twice checking for nails and anything that might have been missed. The crew inspected the exposed roof structure, repairing water damage, and recommended adding a chimney cricket to reduce the potential for water damage in the future. The crew was on site the day the roofing materials were delivered, to setup and ensure the roof was protected in case of rain. I was impressed with the quality of their work and how quickly they completed the job in just a few days. Each day the crew cleaned up, and on the final day thoroughly checked the entire property for nails or anything that might have been missed. Grover's knowledge and advice for the vendor reinstalling the electrical solar panels was invaluable and greatly appreciated. I enthusiastically recommend Wonderlin Roofing Systems Sincerely, Dave Burton

    ELM Roofing Contractors

    ELM Roofing Contractors

    4.9
    (148 reviews)

    We had a highly positive experience with ELM while replacing our Eichler roof and about 70 linear…read morefeet of siding. Full credit to Rodrigo and Lincon, who were on top of things throughout the project. First, they patiently explained the full roofing process to me in detail when I was getting estimates. This was not my experience with some of the other roofing companies who felt rushed or were asking me to cut corners. In contrast, ELM gave me several alternatives before we zeroed on to a torchdown roof. Next, Rodrigo and Lincon were very communicative on our group chat and kept me apprised of the progress throughout, including tons of photos. Rodrigo was also very proactive in dealing with the city for permits as well as clarifications etc, which happened several times since our city is one of the stricter ones. During all this, we had a running clock since we were in contract to sell the house, but Rodrigo and company kept things in motion, sometimes working late hours to ensure completion on time, which we did with several days to spare. It was also very nice of them to talk to my buyers to tell them about the new roof in detail. I was also pleasantly surprised with their integrity. For example, the roofing torch is huge and heavy and accidentally did some minor damage to the house. They fixed it without questions in a very timely manner. They also provided us with a courtesy cleanup inside the house to cleanup roofing debris after demolition. So yeah, thanks to Rodrigo, Lincon, and their crew, we have a brand new roof and siding. They are polite, professional, reasonably priced, great at communication, and clean up well after themselves. Would recommend them 100/100.

    My partner and I happened to get a leak in our roof in basically the luckiest possible place, so we…read moresaw it as soon as it started and it wasn't serious yet, but obviously we still needed it fixed. So we got in touch with ELM Roofing and had them come out to do an inspection. Lucas was great. He identified the issue quickly, stepped us through what our options were, and kept us in the loop the entire time. He checked the roof out with a drone, since it was too high to run a single ladder up, and we got to watch the neighbor's resident hummingbirds go nuts trying to threaten it away. Evidently hummingbirds hate drones! We had our entire roof and the garage roof replaced, because the builder had cheaped out on underlayment materials and is a pain to get to fix anything under warranty. So, y'know, forget him, but this isn't a review about him. We've got a much tougher underlayment now, all the chipped tiles we had have been replaced, and it is quite honestly better than new now. They did clean work, too. Didn't mess up the yard at all, they were fastidious about noise levels and allowed work times, everything you'd hope a certified contractor would do (but do they? Well...many don't, believe me). Quick and thorough, and when the project got interrupted by rain, they kept us informed about that, too. They came out on a Saturday to get ahead of the weather and even let us know exactly what the local weekend construction ordinances were ahead of time so we'd know what to expect. I think that's what I'd say about them the most: No surprises. They don't do anything unexpected with the final invoice, they don't jerk you around, they don't treat you like you won't understand what they're doing. You're fully in the loop at all times and you're treated as a partner in the project. You get exactly the work and quality promised. And it's good work, with a 20 year guarantee. I'd highly recommend them.

    Mosema Services - solarpanelcleaning - Updated August 2026

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