Roof Installation and Replacement

Our team specializes in installing high-quality modified bitumen roofing systems designed for flat and low-slope commercial buildings. We use premium materials that combine asphalt with polymers and reinforced fiberglass, creating a tough, waterproof membrane resistant to cracking and weathering.



When replacement is necessary, we carefully assess the roof's condition and recommend the most cost-effective option. Our installation process minimizes seams to reduce leak risks, ensuring long-term durability. We conform to industry standards and local codes, balancing performance with your operational needs.

Professional Roof Repair

Prompt and precise repairs are critical to extending your roof’s service life. We address common issues such as seam failures, punctures, and membrane blisters. Our repair techniques include patching, recoating, and sealing to restore integrity without a full roof replacement.



Our repair services focus on stopping leaks quickly to prevent interior damage and maintain energy efficiency. We use compatible materials that blend seamlessly with your existing mod bit roofing system, preserving its weather resistance and flexibility.

Routine Roof Maintenance and Inspections

Regular maintenance is essential for maximizing the lifespan of a modified bitumen roof. Our inspection services identify potential problems early, including membrane wear, flashing damage, and drainage issues.



We offer scheduled maintenance plans that include cleaning, minor repairs, and surface evaluations. This proactive approach helps avoid costly emergency repairs and supports your facility’s operational stability.

Protective Coatings & Energy Efficient Upgrades

Applying reflective coatings improves the roof’s resistance to UV rays and reduces heat absorption, contributing to lower energy costs and enhanced indoor comfort. Our coatings are compatible with modified bitumen membranes and are designed to extend roof lifespan.



We also evaluate and install energy-efficient upgrades that meet your building’s performance goals. These enhancements can include heat-reflective granules or specialized membranes to improve insulation and reduce thermal cycling stresses on your roof.

APP membranes are plasticized and tend to be stiffer. They excel in hot, sunny environments due to their excellent UV resistance. APP is commonly torch-applied and is well-suited for roofs needing long-term durability against sun exposure.

SBS membranes are rubbery and flexible, providing better performance in colder temperatures. They handle thermal movement and roof flashing details well. SBS materials are often self-adhered or heat-welded, offering safer installation options compared to torching.

Key considerations for each membrane:

• APP:
• Best for hot climates
• Superior UV resistance
• Typically torch-applied
• Stiffer, with good aging properties

• SBS:
  
• Ideal for cold climates
• Flexible for roof movement
• Self-adhered or heat-welded installation
• Enhanced resistance to cracking in low temperatures

Both types can include various reinforcements such as polyester or fiberglass mats for added strength. We evaluate your roof's environment, usage, and climate before recommending the best membrane to optimize lifespan and performance.

Why Choose Joliet Superior Commercial Flat Roofing for Modified Bitumen Roofing Services

Certified Roofing Experts in Joliet, IL

With 28 years in the roofing business, we hold Master Elite Contractor status and a C‑39 Roofing Contractor License. This means our team meets strict industry standards and maintains up-to-date knowledge on commercial flat roofing systems, especially modified bitumen roofing. Our certifications also back a 30-year warranty on flat roofs, demonstrating confidence in our workmanship. 

Commitment to Quality Materials 

We use only durable, proven materials for modified bitumen roofing systems, combining asphalt and flexible rubber to withstand Joliet’s variable weather. This roofing type resists cracking and handles foot traffic effectively, making it suitable for commercial properties. Our installation process focuses on thorough surface preparation and precise sealing to maximize watertight performance. 

Transparent Assessments

We provide clear, straightforward roof inspections and estimates without upselling or hidden fees. Our quotes cover labor, materials, and timelines honestly. This transparency builds trust and helps you make informed decisions on modified bitumen roofing projects. Being local to Joliet allows us to respond quickly to repairs or maintenance needs after storms or wear.