Flat Roofing Services in San Jose

Flat and low-slope roofs demand precision, strong materials, and proper maintenance. When they are installed correctly, they can last for decades. When they are ignored or repaired poorly, they develop leaks, standing water, surface cracks, blistering, and early wear.

At Clean Roofing, we provide complete flat roofing services and work with every type of flat roofing system used in San Jose. If you are dealing with a leak, drainage problems, aging materials, or you need a full replacement, our team offers clear guidance and dependable solutions backed by real experience.

Your Trusted Flat Roofing Company in San Jose

Flat roofing is a unique skill. It requires an understanding of heat exposure, water flow, and membrane behavior. Our technicians bring years of hands-on experience with commercial and residential flat roofs across the Bay Area.

If you have been searching for a reliable flat roofing company or flat roof repair near me, our team can help you with fast service and quality workmanship.

Flat Roof Repair

Most flat roof issues begin with something small. A cracked membrane, loose seam, clogged drain, or minor ponding can eventually lead to major water intrusion if the problem is not handled on time. Our job is to fix the issue correctly the first time and prevent future damage.

If you need flat roof repair in San Jose or commercial flat roof repair, we provide quick inspections and accurate, long-lasting repairs.

We repair all types of flat roof systems and provide:

Leak detection and waterproof sealing

Repair of punctures and tears

Fixing loose or damaged seams

Surface and coating restoration

Solutions for ponding water and drainage issues

Flat Roof Repair Cost

The cost of flat roof repair depends on the type of damage and how widespread the issue is. Minor repairs are typically more affordable, while larger structural or drainage-related issues may cost more. We always provide a clear, written estimate before starting any work.
Pricing is usually influenced by:

Flat Roof Repair and Replacement in San Jose

If you are dealing with a leak, aged roofing material, or need a complete upgrade, we are ready to help. We handle flat roof repair, flat roof installation, and full flat roof replacement for both homes and commercial buildings. Contact us today to schedule an inspection or request a free estimate.

Flat Roof Replacement San Jose, CA

When a flat roof becomes worn out or experiences repeated leaks, a full replacement often becomes the most cost-effective solution. A new flat roof can help improve energy efficiency, reduce future repair costs, and add lasting value to your property.
We install all major flat roof materials, including:

Flat Roof Replacement Cost

The cost to replace a flat roof varies depending on several key factors:

Total roof size

Type of roofing material selected

Removal and disposal of the old roof

Existing roof condition and structural needs

Insulation and drainage requirements

Access and layout of the property

Flat Roof Installation

A high-quality installation is the foundation of a long-lasting flat roof. Our team pays close attention to slope design, membrane attachment, sealing details, and overall waterproofing to ensure strong performance.

Our installation process includes:

Correct drainage setup

Energy-saving insulation

Professional membrane installation

Reinforced edges and flashings

Flat Roof Installation Cost

The cost of flat roof installation depends on the materials used and the specific requirements of the building. Key cost factors include:

Commercial Flat Roofing Services

Commercial buildings experience heavier wear due to sun exposure, equipment weight, and foot traffic. We provide reliable commercial flat roofing services for: We offer repairs, replacements, coating systems, and ongoing maintenance that help extend the life of your roof and reduce operating costs.

Retail centers

Warehouses

Offices

Multi-unit buildings

Medical and city facilities

Why Choose Clean Roofing for your san jose home

Choosing the right contractor matters when it comes to flat roofing. We focus on workmanship, honesty, and long-term value. You can expect:

WHAT OUR CLIENTS SAY ABOUT CLEAN ROOFING

Our clients appreciate our skilled technicians, clear communication, and attention to detail, values that make us one of the top-rated roofing companies in San Jose. Whether it’s a small leak repair or a large-scale solar roofing project, we approach every job with the same professionalism and care.

Google Reviews

4.5

Based on 45 Reviews

Marcelo San Martín

4 days ago

Exceptional Quality, Professional Team, and Outstanding Results! We recently had our roof replaced by Clean Roofing, and I cannot recommend them highly enough. Our home has a complex second-story roof, but their team handled the entire project with absolute precision and professionalism from start to finish. The project was completed right on schedule, and every single promise made during the initial consultation was kept. The crew was exceptionally skilled, hard-working, and respectful of our property. The finished roof looks phenomenal and has completely transformed the look of our home. The quality of their work speaks for itself—several of our neighbors stopped by to compliment the roof and ask for their contact information, and one neighbor has already hired them for a project of their own! If you want a seamless experience and flawless workmanship, Clean Roofing is the company to call.

Max Liu

1 month ago

Clean Roofing is so efficient. I saw them work on my neighbor’s roof and asked them to replace mine. I also asked my neighbor about the experience; he highly recommends them. My roof was done in a few days, and I recommend this team as well. The workers Tony and his team, their supervisor Rodrigo, and the boss on the phone are all friendly and easy to communicate.

Baklava Tatli

2 months ago

We recently hired Clean Roofing to replace our 30-year-old roof, and we could not be happier with the results. The crew was exceptionally friendly, professional, and thorough—finishing the entire project in just 3 days, exactly as projected. Sergei was fantastic: he speaks fluent English, communicated clearly throughout every stage, and took the time to patiently explain all the work being done. A few highlights from our experience: Transparency: They found and repaired some dry rot, documenting all damaged areas with photos so we could see the issues firsthand. Gutter Work: They installed gutter screens, adjusted the slope to ensure proper drainage away from the house, and shared photos of the freshly cleaned gutters. Quality & Visuals: Sergei even provided drone photos of the completed roof, and the job passed city inspection on the very first try. A quick tip for homeowners: Do a quick walk-around of the perimeter once the crew wraps up to make sure no stray tools or materials were accidentally left behind. Overall, top-notch craftsmanship, efficient work, and outstanding communication. Highly recommended!

Michael Kao

2 months ago

I want to praise the construction team of Clean Roofing, - Rodrigo – Project Manager - Magdaleno – Foreman - Sergi – English Speaker / Roofer - Rolando – Roofer - Eric – Roofer - Jordi – Roofer They check and explain in detail all the parts that need to be repaired and maintain very good construction quality to meet the requirements of customers. During the construction period, update the progress every day and provide photos for sharing. Thanks for their professional attitude, I recommend this team to everyone.

Jillian Bobbitt

3 months ago

Had a wonderful experience with Clean Roofing. The staff was knowledgeable, they helped guide us on options. They made sure everything was WUI compliant to help with our home owners insurance. The project leader had wonderful communication, the crew was helpful. They communicated well when they found some wood damage that would require repair. They cleaned up everyday, and were very efficient getting the install done. For such a large expense, it was so nice feeling confident all the folks involved were knowledgeable and competent. I got several bids, and very carefully compared each, and while it was not the absolute lowest, it was lower than many. The quote was transparent and from the research I did the pricing was super reasonable for the work. A+ Would work with again, but I probably won't have to for at least 30 years because the roof is fantastic.

Ron S

4 months ago

I had my roof replaced in 2023 and Clean Roofing did an excellent job from sales to installation. They were very easy to work with and responsive to any questions and requests. The owner recently contacted me and asked if there were any issues or concerns, which I thought was very thoughtful. I highly recommend them.

Mark J

4 months ago

I've used Clean Roofing on several projects. Service and quality has always been top quality. The crews are good, courteous, communicate at every step of the way. Project started and wrapped up when they said it would. They are also technically knowledgeable, this was important when we were doing a solar installation, as it was not a straight forward install, their solar group (Clean Solar), knew more than any other company we spoke to. I would not hesitate to use them again on future projects.

Kimberly French

5 months ago

We had an outstanding experience with Clean Roofing from start to finish. Roofing projects can be disruptive and messy by nature, but this team truly lives up to their name. A huge shoutout to the crew: Magdaleno, Erick, Luis, Rolando, Jordy, and Sergy, who were exceptional every step of the way. Their communication was clear, consistent, and proactive. We always knew what to expect each day, and any questions we had were answered quickly and thoughtfully. Scheduling was seamless, and they stayed true to their timeline, which we really appreciated. Even more impressive was their follow-through, every detail was handled with care, and nothing felt rushed or overlooked. What really set them apart was how clean and respectful they were of our home throughout the process. Roofing is inherently messy, but this crew went above and beyond to keep everything as tidy as possible each day. It made a huge difference for our family. If you're looking for a team that is professional, reliable, and truly takes pride in their work, Clean Roofing is the one. We couldn’t recommend them more highly.

Yelp Reviews

4.7

Based on 96 Reviews

Patrick L. 6 months ago

Clean roofing did an amazing job on our roof, and I cannot recommend them highly enough! They were quick to come out and give an estimate, available to answer questions regarding the scope of work, timelines, and negotiating price, and just as quick to start work once we were ready to go.

Jorge was our foreman, and he was great. He checked in with us in the morning, professional, and super hardworking, as was the rest of his crew, including Pablo, Jorge Jr, and Jesus. They worked hard, stayed busy, Jorge kept us updated. The whole crew was very nice (with 3 young daughters, that was an awesome little bonus). They kept the workspace contained, were mindful of our safety, and worked around our young family clutter and bustle.

Laura was our operations manager, and she kept us updated and up to speed! Rodrigo was our superintendent, and he was very easy to communicate with. He was responsive, timely, and made sure we understood the scope of the work.

That was important because our roof needed more work than the initial work order we laid out. There was a lot of rot in the wood beneath the roof. The original estimate was very reasonable, but the scope of work great 2-3x fold. With that increase in work that had to be done, the price still felt very fair. We were in good hands!

The whole experience was very relieving. We've had rain since they finished, no leaks at all! And they've checked in us to make sure everything was all good regarding no leaks. I'm so glad I found Clean Roofing and worked with them!

michael 7 months ago

Clean Roofing did a great job helping with a leak on our flat membrane roof. I called them about the issue, and they responded quickly, found the leak, and repaired it efficiently. While they were there, they also recommended some preventive cleaning and minor repairs to help avoid future problems, which I really appreciated. Their pricing felt reasonable, and the quality of their work was excellent. Great company overall -- I would happily recommend Clean Roofing and use them again.

Kristi C. 8 months ago

I cannot recommend Clean Roofing enough! Dealing with a roof leak is incredibly stressful, but this team made the entire process so much easier.

Desiree was absolutely amazing--she was always quick to respond and kept communication seamless. Micah was also a huge help, patiently answering all of our questions with a friendly and professional attitude.

When it came to the actual work, Daniel and Eduardo were fantastic. They were professional, punctual, and their quality of work was excellent. It is rare to find a team that combines such great customer service with high-quality craftsmanship. If you're looking for a reliable roofing company that truly cares about their customers, look no further

Jill B. 8 months ago

We had a good experience with the roofers who did the work on our house - Rodrigo (project manager), Jorge, Jr, Pablo, and Jesus. They were timely and polite. They worked very hard, cleaned up, and kept me in the loop.

K D. 1 year ago

Clean Roofing came out and fixed some out of warranty holes in my roof caused by some squirrels or crows. There was some initial miscommunication but it was resolved entirely satisfactorily. Even though it was out of warranty. Thank you !!

Robert C. 1 year ago

Miguel, Jose and team took the time and care with our roof to make sure it was the best looking one on the block! We're so happy with their hard work, and really appreciate the way all parts of the process were handled professionally.

Toni M. 1 year ago

Everything went very smoothly! All communication was great! The guys worked hard and the roof was done quickly. They cleaned up as if they were never there. The price was competitive, and they finished on time as promised. The roof looks great and we have already been receiving compliments. We also added insulation and they did a fabuous job- very thorough and complete.

Jack M. 1 year ago

We had these guys install a Tesla solar roof for us. Very responsive, professional and helpful. I'd definitely recommend.

FREQUENTLY ASKED QUESTIONS

Are flat or low-slope roofs better than gable roofs?

Both systems have strengths, but the right choice depends on the type of building. Flat and low-slope roofs are common on commercial buildings because they allow easy installation of HVAC units, solar panels, and drainage systems. They also cost less to install on large surface areas. Gable roofs are more common on residential homes because they handle rainwater quickly and offer attic space. For commercial properties in San Jose, flat roofs are usually more practical and cost-effective.

How long does a flat roof last?

A flat roof can last anywhere from 15 to 30 years depending on the material used, the quality of installation, and how well the roof is maintained. TPO and PVC typically last 20 to 30 years, EPDM can reach 25 years or more, and modified bitumen usually lasts 15 to 25 years. Regular inspections and proper drainage can extend the lifespan of any flat roofing system.

How do you repair a flat roof?

Repairing a flat roof begins with a full inspection to locate the exact source of the leak or surface damage. The common steps include sealing cracks, patching punctures, repairing seams, clearing drains, and applying high-quality waterproof coatings. For commercial buildings, repairs may also involve reinforcing weak areas or restoring protective layers. The key is to fix the specific problem and prevent water from entering the membrane again.

What is the best material for a flat roof?

The best material depends on your building’s needs and long-term goals. TPO is popular for its energy efficiency and durability. PVC offers strong chemical resistance and long-term performance for commercial buildings. EPDM rubber is a flexible and affordable choice with a long service life. Modified bitumen is a reliable option for smaller roofs, and silicone coatings work well when restoring older roofs. A professional inspection helps determine the ideal system for your property.

When ventilating flat roofs, what are the most common openings?

The most common ventilation openings for flat roofs include roof vents, edge vents, soffit vents, and mechanical ventilation units. These openings allow heat and moisture to escape, which prevents condensation, mold growth, and premature roofing damage. Proper ventilation improves energy efficiency and helps extend the lifespan of the flat roofing system.

Why do commercial buildings have flat roofs?

Commercial buildings use flat roofs because they are cost-effective to install and maintain over large areas. They also provide a stable surface for equipment like air conditioners, skylights, solar panels, and drainage systems. Flat roofs make commercial construction easier and more affordable, which is why most business properties in San Jose rely on them.

How do you repair a commercial flat roof?

Repairing a commercial flat roof involves identifying the root cause of the issue, which may include membrane damage, standing water, cracks, or worn-out coatings. Repairs often include patching, resealing seams, replacing flashing, improving drainage, or applying a new coating layer. Commercial repairs need careful attention because larger roofs are more prone to hidden leaks and structural wear.

How do snow and ice impact flat commercial roofs?

Snow and ice can create additional weight on a flat roof and may lead to ponding water when melting begins. Repeated freeze and thaw cycles can cause small cracks in the membrane and stress the seams. Proper drainage, insulation, and winter maintenance help prevent damage and extend the life of the roofing system. In San Jose, roof stress from snow is far less common, but cold weather can still affect older roofs.

How long should a flat roof last?

A well-installed flat roof should last 20 to 30 years with proper maintenance. Material type, climate conditions, and drainage design all play a major role. Roofs with poor slope or clogged drains tend to wear out earlier. With routine inspections and timely repairs, many flat roofs outperform their expected lifespan.

What causes flat roofs to leak most often?

Flat roofs usually leak when water cannot drain properly or when the roofing membrane becomes damaged over time. Common causes include clogged drains, aging materials, loose seams, punctures from foot traffic, standing water, and worn flashing around edges or roof penetrations. Regular inspections and timely maintenance are the best ways to prevent leaks and protect the roof structure.

Flat Roofing Services​ in San Jose