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:

Size of the repair area
Type of roofing material
Severity of the leak or membrane damage
Accessibility of the roof
Required waterproofing or coating
Labor and safety requirements

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

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:

Choice of roofing system
Roof size and layout
Insulation type and thickness
Installation complexity
Ventilation and drainage design
Warranty level and manufacturer specifications

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

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.

J Ku

15:55 07 Oct 25

Roof was done reasonably efficiently given inspection delays from the city. PJ was very knowledgeable and helpful with the scoping. Rodrigo was a good project manager that communicated frequently. Silvano, Luis, and Jose did good work, and left the area clean.

ulysse manceron

23:04 25 Sep 25

The team did a great job installing a metal roof, and they spend some time to clean things up at the end of each days.

Benjamin Hashiba

18:47 28 Aug 25

Clean Roofing, led by Jose and his crew, and project lead Miguel, did an excellent job installing a new roof, gutters and gutter covers, and roof jack. The work was professional, on time, and I would highly recommend Clean Roofing for any roofing project. They kept me fully informed, were tidy and cleaned up, and the entire roof appearance is beautiful. Thank you very much Clean Roofing.

JCAY Ventures

16:26 15 Aug 25

I was researching solar and reroofing options and even though I did not choose to work with this company in the end, I felt I had to give them good reviews for their help along the process. I had to get many quotes to understand the market and my options so I had to turn down all but 1 company in the end. But I do appreciate the information provided by Art Balaoro. Email communication is quick, clear, and informative. Answered my questions on roofing to work with a solar system for me and was very professional and patient. I think they would've been a solid choice too. I decided to work with a local family-owned roofer whose owner is the roofer and came in person.

Jack Menzel

22:32 22 Jul 25

We had clean roofing put a Tesla roof on our new house. If you want to get a Tesla roof these are one of the few guys in town that can make it happen for you. When it comes to the service they are good communicators and are very helpful and responsive.

Darren Son

21:22 21 Jul 25

We had Clean Roofing on as the company to do a major roof project for an expected future solar installation. Miguel Huerta and his crew did an excellent job on the project. We needed the whole roof replaced with new plywood, shingles and gutters and their team worked fast. It took a week for everything to be complete and they didn't leave a mess at all. Any complications that came up, they communicated it with us and resolved it in a timely manner. The quality of the roof overall is great and looks beautiful.

Timothy Hui

18:50 21 Jul 25

I chose Clean Roofing for a full roof replacement going from wooden shaker panels to composite asphalt. Clean Roofing also has a sister company called Clean Solar, and my initial contact was with Art (sales) who mostly answered my solar questions but was more than well versed in answering general questions on roofing as well. He was professional and didn't try to cross sell services, nor was he pushy when I was hesitating on such a costly expense. Ultimately, choose Clean Roofing over other companies because of the professionalism working with Art, the follow-ups, and the detailed quote provided. Their quote came in right in the middle of all the bids, and they have their master installer warranties to put the cherry on top.

Service:
I landed Rodrigo as the foreman and Miguel as my project manager. Both were communicative, and informed me of any issues as the project went along. I always have a healthy bit of skepticism when contractors leave the door open for "unforeseeable issues", but I felt they were very honest in terms of what absolutely needed to be repaired vs what could've waited. My project was close to 40k, but we only saw about a 1k over-run due to dry-rot. They took plenty of pictures of the problem areas, and gave me the option if I wanted to replace.

Miguel followed up daily to ensure I didn't have any questions, and Rodrigo led his crew with a professionalism that inspired confidence in his craftsmanship. He was also very joyful, and that's awesome to see someone that loves their job so much.

Cleanliness:
Re-roofing is a loud and messy job, but everyday I came home to a clean worksite. The floors were all blown clean, and they neatly made a pile of their tools in a corner of the driveway for use the next day. I have an exposed garage, and the team offered to tarp my belongings before the project started, and tried their best to clean the garage of all the debris that fell by the end of the project.

There was a bit of an obstruction that found it's way into my bathroom exhaust vent, but Rodrigo took care of it right away when he was back on site the next day by blowing it out.

Quality:
From what I could tell, the roof looks clean. It passed inspection on first try, and all flashings look properly cut. I guess I'll only truly know when it's rainy season again, but we love how clean the roof looks for now!

Would highly recommend Clean Roofing, their service was top notch and I feel confident in their work.

Rakshith k

20:15 08 Jul 25

[UPDATED REVIEW]
Following the initial unfortunate incident, the company's president Micah personally reached out and assured that he would oversee the roof replacement process. Although their bid was not the most economical, I chose this company over several others due to positive reviews highlighting exceptional service.

The day of the teardown proceeded seamlessly. The team arrived promptly in the morning and removed the old roof within approximately three hours. Later that afternoon, new materials were transported onto the roof in preparation for an early start the next day. Anticipating potential rain, the crew covered the roof with felt paper to prevent any water leakage into the home.The re-roofing was efficiently completed within two days, and the team executed an outstanding job.

They undoubtedly went above and beyond, even touching up paint on trim and fascia boards, as well as patching small areas of stucco to ensure the roof's optimal appearance. Throughout the process, I experienced excellent communication, decision-making autonomy, outstanding customer service, and superior workmanship quality.

I would highly recommend Clean Roofing!

[PREVIOUS REVIEW]
I wanted to replace my roof and asked for a quote, The estimator visited the property and did an review and told me that i had 2 layers of roof and he would send an updated quote in next couple of hours. I was in a hurry to get the process started so i followed up the next day when the quote was not sent. They replied back with the updated quote.

I noticed that quote still mentioned 1 layer of roof removal. I asked for the correction on thursday and followed up again on monday when i didn't get a response on Friday.

i got a response but the price changed again, i was under the impression the initial updated quote was including the price of two roof layers. I expressed my displeasure at the of me having to follow up a lot and how this process has not been good so far.

But that's when i call back and had person yell at me, accusing me that i called off work hours and was expecting a response over the weekend. I never called that company or any person in that company but only have incoming calls. But the experience of person from a company yell at you because i expressed that i was having a bad experience in communication is a first me. All this before signing a contract, think of what you can expect after signing the contract. This should tell you of what kinds customer service you can expect from this company.

They are arrogant, non responsive and really difficult to work with. From my experience I would not work with this company, and advice other to do the same.

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

Your Trusted Flat Roofing Company in San Jose