Licensed & Insured
Flat Roofing in San Jose, CA
We've been installing and repairing flat roofs across San Jose for 16 years. From TPO and PVC to modified bitumen, our crew handles every job with precision and pride. Get a free estimate today.
What's Included
Every Flat Roof Job Comes With These
When we roll onto your San Jose property, you're getting more than a new membrane. Here's exactly what's delivered — from inspection to final sweep.
- Thorough inspection of your existing flat roof, including deck, flashing, and drainage
- Full tear-off of old material down to the deck — no layovers
- Repair or replacement of damaged plywood or metal edge flashing
- Installation of high-quality TPO, PVC, or modified bitumen membrane (your choice)
- Heat-welded seams for leak-proof performance on TPO/PVC systems
- Proper slope-to-drain reconfiguration where needed to prevent ponding
- All new roof drains, scuppers, or gutters tied into existing system
- Metal drip edge and termination bars installed to code
- Complete clean-up with magnet sweeps for nails and debris
- Walk-through inspection with you — we show every seam and detail
- 10-year workmanship warranty on all labor
- Manufacturer warranty (20–30 years depending on material)
- Free re-inspection within 30 days if any issues arise
Our Workflow
How Our Flat Roofing Process Works
From your first call to the final walkthrough, we follow a streamlined process that keeps your project on track. Here’s what you can expect when you work with us.
- Free Inspection & Estimate — We visit your property to assess the roof’s condition, take measurements, and discuss your needs. Within 24 hours, you receive a detailed, no-obligation quote.
- Material Selection & Scheduling — Choose from our factory-certified options (Malarkey, CertainTeed, GAF, Owens Corning). We coordinate a start date that works for you and secure all permits.
- Prep & Tear-Off — Our crew protects your landscaping and driveway, then removes the old roofing down to the deck. We inspect the substrate for any damage.
- Installation & Quality Checks — We install your new flat roof system, applying multiple layers of waterproofing and flashing. Our foreman performs a mid-project inspection to ensure everything meets code.
- Final Walkthrough & Cleanup — We review the finished roof with you, answer any questions, and do a thorough site cleanup—including magnet-sweeping for nails. You receive your workmanship warranty and maintenance guide.
- Follow-Up Support — We check in after 30 days to confirm everything is holding up. Our team is on call for any future service needs, from storm damage to routine maintenance.
DIY vs. the Pros
How We Stack Up: DIY, Cheap Competitor, or South Bay Roofing Co.
We've seen too many San Jose homeowners try the cheap route or go DIY on a flat roof. Here's how the options really compare—and why experience matters on every South Bay roof.
| Factor | DIY | Cheap Competitor | South Bay Roofing Co. |
|---|---|---|---|
| Materials | Big-box store stock (often low-grade) | Bargain-bin singles or low-temp modified bitumen | Factory-certified: Malarkey, CertainTeed, GAF, Owens Corning |
| Installation | YouTube how-to, no warranty | Rushed crew, no permits pulled | Licensed, bonded, insured — CA CSLB #1087234 |
| Workmanship Warranty | None | 1 year (if you can get them back) | Full workmanship guarantee + cleanup guarantee |
| Insurance Claim Help | You're on your own | They'll try, but often miss deadlines | We handle claims start to finish |
| Longevity (flat roof) | 3–5 years if lucky | 5–8 years typical | 15–20+ years with proper maintenance |
| Cost Upfront | Low (materials only) | Medium-low | Fair, transparent pricing — free estimate |
| Peace of Mind | None | Low | 16 years, 200+ 5-star reviews, BBB A+ |
Recent Flat Roof Replacement
How We Replaced a Leaking Flat Roof in Willow Glen
Last year, we tackled a tricky flat roof job on a 1950s ranch home in Willow Glen. The old built-up roof had multiple leaks and poor drainage. Here's exactly what we did.
Flat Roof FAQs
Common Questions About Flat Roofs in San Jose
We've been installing and repairing flat roofs across the South Bay since 2010. Here are answers to the questions we hear most from homeowners and commercial property owners.
How much does a flat roof cost in San Jose?
Cost depends on roof size, material (modified bitumen, TPO, or PVC), and condition of the existing deck. For a typical 1,500 sq ft home, expect $6,000–$12,000 installed. We provide free, no-obligation estimates — call (510) 327-8325.
What's the best flat roof material for San Jose's climate?
For our South Bay weather — hot summers, mild winters, occasional rain — TPO and PVC are top choices. They reflect heat, resist UV damage, and handle ponding water well. Modified bitumen is also durable and cost-effective.
How long does a flat roof last?
A properly installed flat roof lasts 20–30 years. TPO and PVC roofs often hit 25+ years with routine maintenance. We back every job with a workmanship warranty.
Can I install a flat roof myself?
We don't recommend it. Flat roofs require precise seams, proper slope for drainage, and correct flashing details. A DIY mistake can lead to leaks and water damage. We're licensed (CA CSLB #1087234), bonded, and insured — let us handle it.
Do you handle flat roof repairs for commercial buildings?
Yes, we do residential and commercial flat roofing. We've repaired roofs on retail spaces, offices, and apartment complexes in downtown San Jose and Willow Glen. We also handle insurance claims from start to finish.
Will you clean up after the job?
Absolutely. Every roof comes with a cleanup guarantee. We sweep, magnet for nails, and haul away all debris. Your property will look better than when we arrived.
How do I know if my flat roof needs replacing?
Signs include persistent leaks, blisters, cracks, or ponding water that doesn't drain. If your roof is over 20 years old, it's worth a free inspection. We'll give you an honest assessment — no pressure.
Pricing Guidance
Final pricing depends on roof size, slope, access, materials, and condition of underlying decking. Ranges below are typical for a single-family home.
| Service | Typical Range | Unit |
|---|---|---|
| Roof Replacement | $9,000–$28,000 | per single-family home |
| Roof Repair | $450–$2,800 | per repair |
| Storm Damage Repair | $800–$12,000 | per claim |
| New Roof Installation | $9,500–$30,000 | per single-family home |
| Metal Roofing | $14,000–$42,000 | per single-family home |
| Shingle Roofing | $8,500–$24,000 | per single-family home |
| Flat Roofing | $6–$14 | per square foot installed |
| Gutter Installation | $850–$3,400 | per home (includes downspouts) |
| Roof Inspection | $0–$450 | per inspection (often free with replacement) |
| Emergency Roof Repair | $600–$3,500 | per emergency call |
| Skylight Installation | $950–$3,800 | per skylight installed |
Ready for a Flat Roof That Holds Up in Every Season?
We've been installing and repairing flat roofs across San Jose for 16 years — from torch-down to TPO. Get a free, no-obligation estimate from a crew that knows South Bay weather and building codes inside out.
Licensed, bonded, and insured — CA CSLB #1087234. Call (510) 327-8325 or click to request your quote.