Trusted Commercial Roofing in Diamond Bar!
We are Titans of the roofing industry. Our purpose is to Protect your home and Repair your roof.



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Discover unparalleled commercial roofing solutions in Diamond Bar, California, with Roof Titan. For over three decades, this family-owned enterprise has been the trusted choice for businesses seeking top-tier roofing services.
Specializing in TPO, built-up, modified bitumen, metal, and silicone roofing, Roof Titan ensures your commercial property is protected with precision and care.
From the initial expert assessment to providing tailored quotes, our dedicated team guarantees a seamless experience. Our efficient installation process is backed by robust warranties extending up to 30 years, offering you peace of mind and long-lasting security.
In need of urgent assistance? Rest easy, as our 24/7 emergency response team is always ready to address your immediate roofing concerns.
Join the growing number of local businesses that trust Roof Titan for their roofing needs. Book your appointment online today and experience the reliability and expertise that sets us apart in Diamond Bar.
Let us be your partner in safeguarding your commercial property with quality and excellence.
Discover RoofTitan
Why Choose RoofTitan?
Counties We Service
Our Roofing Services
California Roofing Experts:
Repairs, Replacements, Commercial
TPO Membrane Installation
Built-Up Roof Systems
Modified Bitumen Systems
Metal Roof Installation
Silicone Roof Coating Systems
Green Roof Installation

About Us
Roof Titan Commercial Roofing Process
01 Expert Needs Assessment
Roof Titan ensures precise commercial roofing evaluations, addressing leaks, structural integrity, and environmental factors, with tailored solutions aligning with business needs and budget, ensuring transparency and effective communication.
02 Customized Quote Development
Roof Titan’s estimators provide free, detailed quotes, considering local conditions and client needs, ensuring roofing solutions meet budgetary and project goals with advanced technology and expert consultations.
03 Efficient Installation Process
Roof Titan ensures efficient commercial roofing with systematic inspections, detailed timelines, premium materials, and quality checks, minimizing disruptions and enhancing durability for lasting performance.
04 Comprehensive Warranty Protection
Roof Titan offers up to 30-year warranty coverage for workmanship and material defects, with maintenance programs to ensure longevity and full liability insurance for added protection.

We are RoofTitan
Roof Titan Commercial Roofing Homeowners Challenges
Leaking During Storm Season
Aging HVAC Deck Damage
Solar Panel Integration Issues
Energy Efficiency Issues

Step by Step Roof Repair Process
We do all the heavy lifting
Expert Needs Assessment
Customized Quote Development
Efficient Installation Process
Comprehensive Warranty Protection
Why Choose Us
Roof Repair by RoofTitan Why Choose Us?
Highest Protection & Best Quality
We are a proud California family-owned and run business
We are Fully Insured
We care about every job as if it was our own property
We Service all of California
Frequently Asked Questions
ALL THE A'S TO YOUR Q'S
How Long Does a Commercial Roof Replacement Typically Take?
Commercial roof replacements typically take 1-3 weeks, depending on roof size, weather conditions, and complexity. Roof Titan prioritizes efficiency while ensuring maximum roof durability through quality materials and expert installation techniques.
What Financing Options Does Roof Titan Offer for Commercial Projects?
Roof Titan offers flexible financing solutions for commercial projects, including payment plans, financing partnerships, and specialized options tailored to business budgets. Their team works with clients to find the most suitable financial arrangement for every roofing investment.
Can Roof Titan Work Around My Business Hours During Repairs?
Roof Titan offers Flexible Scheduling that accommodates business operations during repairs. Their teams work around clients’ hours to minimize disruption, conducting services during off-hours, weekends, or lower-traffic periods when necessary.
How Often Should Commercial Roofs in Diamond Bar Be Inspected?
Commercial roofs should be inspected biannually, typically in spring and fall. Roof Titan recommends this inspection frequency to identify potential issues before they escalate, especially in Diamond Bar’s climate conditions. Call (626) 594-6858 for scheduling.
Association andCertification




Testimonial
This is What Our Wonderful Clients Are Saying

