Roof Waterproofing & Drainage Repair Experts in Southern California

Professional Roof Waterproofing & Waterway Repair for Southern California Homes & Businesses

Why Waterproofing Matters

Water damage is one of the most expensive and avoidable problems for property owners. Whether you’re managing an older home or a commercial flat roof, poor drainage and failing sealants can lead to rot, mold, structural issues, and costly repairs.

At Bonded Roofing, we specialize in identifying and resolving water intrusion risks before they turn into expensive headaches.

Get Your Free Roofing Estimate Today

Fast, free, and no obligation. Licensed & insured for 50+ years.

Our Waterproofing & Drainage Services

We help prevent leaks and extend the life of your roof through a combination of expert inspections, sealing, and drainage repair.

Who We Work With

Our waterproofing services are ideal for:

  • Flat and low-slope commercial roofs
  • Apartment buildings and HOA complexes
  • Older homes with aging sealants
  • New homeowners wanting preventative protection

Roof waterproofing membranes
Flashing & joint sealing
Roof coating systems
Gutter, scupper, and downspout repair
Waterway inspections and cleaning
Ponding water remediation

What We Protect Against

We protect your roof—and everything under it—by sealing up vulnerabilities and ensuring water is safely diverted off your structure. These services are essential for flat roofs, older properties, and buildings with poor drainage or prior leak history.

Standing or Ponding Water
Clogged Drains or Scuppers
Poor Runoff or Drainage Flow
Cracked or Open Flashing
Roof Coating Deterioration
Leak-Prone Flat Roofs

Why Bonded Roofing?

For over 50 years, Bonded Roofing has helped Southern California property owners avoid expensive water damage with proactive solutions and trusted expertise. Our team knows what to look for and how to fix it fast—without the upsell.

50+ Years of Waterproofing Experience
Licensed & Insured (C39-1083049)
Honest, Pressure-Free Inspections
Residential & Commercial Capable
Warranty-Backed Workmanship
How do I know if my roof has waterway issues?
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Signs include standing water, overflow during rain, visible mold, or past leaks. If you’re unsure, schedule a drainage inspection.

Is this just for flat roofs?
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No—while flat roofs are most at risk, sloped roofs with valleys, drainage systems, or complex designs can also benefit.

What’s the difference between waterproofing and a full roof replacement?
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Waterproofing is a preventative measure or minor restoration—it costs far less and extends your roof’s life.

Do you provide waterproofing for commercial properties?
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Absolutely. We work with HOAs, property managers, and business owners across Greater LA and Orange County.

Don’t Let Water Win

Protect your property today with expert waterproofing and drainage solutions from Bonded Roofing.