Flat Roof Installation in Pasadena, CA

At Pasadena Prime Roofing, we specialize in comprehensive flat roof installation services that are expertly engineered to meet the distinctive structural requirements, performance demands, and aesthetic vision of your commercial or residential property. Flat roofing systems require exceptionally precise technical skills, specialized installation techniques, and premium-grade materials to ensure optimal water drainage, superior weather resistance, and long-lasting durability, and our seasoned team possesses the extensive expertise and proven track record to deliver exactly that level of excellence.

We provide exceptionally reliable, superior-quality flat roof installations that create an impenetrable protective barrier for your building while demonstrating remarkable resilience and longevity that truly stands the test of time and challenging weather conditions. Our dedicated team works in close collaboration with you throughout the entire process, carefully evaluating your specific needs, budget parameters, and design preferences to select the most suitable roofing materials, drainage solutions, and installation methods that perfectly align with your exact requirements and long-term performance expectations.

Flat roofing systems offer tremendous advantages including space efficiency, modern architectural appeal, potential for rooftop utilization, and cost-effective installation, but these benefits can only be fully realized when the system is installed with meticulous precision and expert craftsmanship. We comprehensively handle every aspect of your project from initial structural assessment and detailed planning to final installation and quality assurance testing, providing you with complete peace of mind and confidence throughout every phase of the process.

Our commitment to excellence ensures that your new flat roof not only meets but exceeds industry standards for performance, safety, and longevity, while enhancing your property's value, energy efficiency, and visual appeal for years to come.

Materials We Use in Flat Roof Installations

We choose materials based on durability, cost, and how well they protect your building. Each option offers unique features that affect installation, maintenance, and lifespan.

Ethylene Propylene Diene Monomer (EPDM)

EPDM is a rubber membrane known for its flexibility and weather resistance. It handles UV rays and extreme temperatures well, making it good for many climates.

We install EPDM roofs because they have a smooth surface that resists tears and punctures. This material is simple to install and repair, often using adhesive or mechanical fasteners.

Maintenance for EPDM is low, but it is important to check seams and edges regularly. EPDM can last 20 to 30 years if cared for properly, and it is cost-effective compared to some other options.

Thermoplastic Polyolefin (TPO)



TPO is a single-ply roofing material that offers excellent heat reflection and energy efficiency. It is made from a blend of polypropylene and ethylene-propylene rubber.

We use TPO for roofs that need strong resistance to chemicals, punctures, and UV light. It is heat-welded at the seams, which creates a tight, waterproof seal.

TPO roofing is lightweight and has a bright white color that helps reduce cooling costs. It typically lasts about 15 to 20 years and is easy to maintain with routine cleaning.

Modified Bitumen

Modified bitumen is an asphalt-based roofing material designed for flat or low-slope roofs. It is reinforced with polyester or fiberglass for added strength.

We apply this material using heat, cold adhesives, or self-adhesive sheets. It forms a tough, durable surface that resists water and damage from foot traffic.

This material is known for good flexibility and weather resistance but may require more maintenance than rubber or TPO options. Modified bitumen roofs usually last 10 to 20 years depending on conditions.

Our Flat Roof Installation Process

We follow a careful method to make sure your flat roof is strong, weatherproof, and lasts a long time. Our steps cover everything from inspecting your property to choosing materials and completing the job on time.

Site Assessment and Preparation

First, we inspect your roof’s current condition. We check for damage, drainage issues, and any structural problems that could affect installation. This helps us plan the job safely and correctly. Next, we clear debris and remove old roofing if needed. We pay special attention to the roof deck's condition to ensure it can support the new roofing layers. If repairs are needed, we handle those before moving forward.

Our team sets up safety measures and protects surrounding areas. Good preparation keeps the project moving smoothly and avoids delays.

Material Selection and Sourcing

We choose roofing materials based on your building’s size, climate, and your budget. Common choices include TPO, EPDM, and modified bitumen, each with different benefits like durability and energy efficiency. We work with trusted suppliers to get high-quality materials quickly. This guarantees that we use products that meet industry standards and last over time.

Our team explains the pros and cons of each option, so you can make an informed choice that fits your needs and goals.

Installation Timeline and Steps

Once materials arrive, we start with the underlayment layer to protect against moisture. Then, we install insulation to improve energy efficiency. Next, we apply the roofing membrane or covering in sections. We use precise techniques like heat welding or adhesives, depending on the material type.

The total job usually takes a few days to a week, depending on roof size and weather conditions. We keep you updated at every stage to ensure transparency.

Quality Assurance and Cleanup

After installation, we perform a full inspection of the roof’s surface, seams, and flashing to check for leaks or weaknesses. We test drainage and ensure everything meets local building codes. Any issues found are fixed right away. Finally, our crew cleans the job site thoroughly. We remove debris and leftover materials, leaving your property neat and safe.

Custom Solutions for Residential and Commercial Properties

We design flat roof installations to fit the unique needs of both homes and businesses. Our approach considers durability, style, and budget for each property type.

Residential Flat Roofs

For homes, we focus on durability and energy efficiency. We use materials like TPO and EPDM that resist weather and temperature changes.

Our team works with you to choose colors and finishes that match your home’s look. We also make sure the roof has proper drainage to avoid leaks.

Safety and insulation are key. We install layers that protect your home from water damage and help keep your energy bills low.

Commercial Projects

Commercial roofs require strong, long-lasting materials to handle heavy use and foot traffic. We frequently use built-up roofing or modified bitumen for these jobs.

Our process includes a detailed site assessment to plan for equipment like HVAC units. We make sure your roof can support this extra weight.

We also ensure quick installation to minimize disruption to your business operations. Our flat roofs are designed for easy maintenance and repairs in the future.

FAQs Flat Roof Installation

We provide clear options for roofing materials, pricing details, and timeframes for installation. Our warranty choices and eco-friendly solutions are designed to meet different needs. Scheduling an inspection is simple and straightforward.