Janesville Superior Roofing: Premier Roofing Services in Janesville, WI

Janesville Superior Roofing is a licensed commercial and residential C-39 roofing contractor providing top-quality roof repair, roof replacement, and roof installation services for all kinds of roofing projects. Our skilled team completes hundreds of successful roofing jobs each year, delivering reliable protection for businesses, homes, and multi-family properties. In addition to preventative roof inspections and maintenance, we specialize in asphalt shingle roofing, durable metal roofing, clay tiles, slate, synthetic systems, and flat roof repair. For urgent needs, we offer fast and dependable emergency roof repair and storm damage restoration to keep your property safe and secure.


Why businesses and homeowners trust us for roofing in Wisconsin:


  • 28+ years of roofing experience and expertise
  • Master Elite Contractor status
  • 50-year residential shingle warranty
  • 30-year commercial flat roof warranty
  • $5M+ General Liability coverage
  • Workers’ Compensation protection
  • Service coverage throughout Janesville, WI and surrounding communities


(608) 299-4967

References of Big Commercial Roofing Projects We've Done

Why are we the best commercial roofer in Janesville, WI?

  • Certified in Title 24 cool roof and reflective roofing systems.
  • Financially stable company—projects stay on schedule with no funding delays.
  • Completed multi-million-dollar commercial roofing projects for hotels, industrial sites, apartments, and historic buildings.
  • Factory-certified by GAF, Carlisle, Firestone, Johns Manville, and CertainTeed.
  • Offers 50-year shingle warranties and 30-year commercial flat roof warranties.
  • Authorized to install TPO, PVC, EPDM, Modified Bitumen, BUR, and metal roofing systems.
  • Provides no-dollar-limit warranties with full replacement protection.
  • Frequently hired to rescue incomplete or failed roofs left by inexperienced contractors.
  • Specialists in infrared moisture scanning, leak detection, and preventive maintenance.
  • Skilled in commercial roof replacements, retrofits, coatings, and energy-efficient upgrades.
  • 28+ years as a licensed C-39 commercial roofing contractor.

200+

Commercial roofing projects completed

14 Million

Square feet of commercial roofs maintained

Over 300

Happy customers served

15

Awards won

Our Commercial Roofing Services

Commercial Flat Roof Installation

Commercial flat roof installation involves selecting the right membrane system—such as TPO, PVC, EPDM, Modified Bitumen, or BUR—based on the building’s structure and performance needs. We assess insulation, drainage, and roof slope to ensure long-term weather protection and efficient water runoff. All installations are completed to manufacturer specifications to maintain full warranty coverage. The result is a durable, low-maintenance roofing system designed to withstand commercial use and climate conditions.

Commercial Flat Roof Repair

Flat roof repair focuses on addressing leaks, seam separations, punctures, and drainage issues to restore the roof’s watertight integrity. Our technicians use moisture scanning and diagnostic methods to locate problems accurately before making repairs. We use compatible repair materials to ensure the system remains within warranty requirements. This service extends the life of the roof and helps avoid costly structural damage.

Commercial Flat Roof Replacement

When a flat roof has reached the end of its service life, we remove the failing system and replace it with a modern, energy-efficient membrane. The replacement process includes inspecting the underlying deck, improving insulation, and installing a high-performance roofing system suited to the building’s needs. We ensure the new installation meets building codes and manufacturer warranty standards. This provides a secure, long-lasting roof designed for decades of reliable protection.

Commercial Roof Maintenance Programs

Our maintenance programs are designed to extend the lifespan of commercial flat roofs and prevent unexpected failures. They include scheduled inspections, debris removal, drainage clearing, and targeted repairs. Early detection of wear, moisture intrusion, or membrane damage helps avoid costly emergency replacements. Ongoing maintenance keeps the roof performing efficiently and protects your long-term investment.

What materials do we use on our commercial roof installations?

TPO (Thermoplastic Polyolefin)

TPO is a single-ply membrane known for its energy-saving reflective surface and strong UV resistance. It is heat-welded at the seams, creating a durable, watertight bond. This material is commonly used on commercial flat roofs to help lower cooling costs and improve long-term performance.

PVC (Polyvinyl Chloride)

PVC is a single-ply roofing membrane valued for its resistance to chemicals, grease, and fire. It maintains flexibility over time, allowing it to perform well in changing temperatures. Its heat-welded seams provide strong waterproof protection ideal for commercial and industrial environments.

EPDM (Ethylene Propylene Diene Monomer)

EPDM is a rubber-based roofing material known for its longevity and weather durability. It handles expansion and contraction effectively, making it suitable for climates with temperature swings. EPDM is also cost-effective and easy to maintain or repair.

Modified Bitumen Roofing

Modified Bitumen is a layered, asphalt-based roofing system reinforced with polymers for added flexibility and strength. It can be installed using heat welding, cold adhesives, or self-adhering sheets. This system provides strong puncture resistance and consistent long-term performance.

Built-Up Roofing (BUR)

BUR is a multi-layer roofing system constructed with alternating layers of bitumen and reinforcing fabrics. The multiple layers provide excellent waterproofing and durability. It is commonly finished with gravel or reflective coatings to improve weather and UV protection.

Commercial Roofing Process

1 Comprehensive Consultation & Inspection

We begin with a thorough evaluation of your current roof and discussion of your needs and preferences to create a customized solution. Our 25-point inspection identifies all existing conditions and potential concerns, providing a complete picture of your roof's current state. We document existing conditions with detailed photos to share our findings clearly, ensuring you understand exactly what we've discovered. We identify current or potential issues that require attention, prioritizing them based on urgency to help you make informed decisions. We discuss your goals, timeline, and budget considerations to ensure our solutions align with your expectations and financial parameters.

2 Detailed Proposal & Material Selection

We provide a clear proposal outlining recommended solutions and options customized for your Janesville property. Our transparent pricing includes line-item detail so you understand exactly what you're paying for, with no hidden costs or surprises. We present multiple material and system options when appropriate, allowing you to choose based on your priorities for performance, appearance, and budget. We explain warranty coverage in detail so you understand your protection options and the long-term value of your investment. We provide a projected timeline and process overview so you know what to expect throughout the project, from material delivery to completion. We provide samples and visualization tools to help you envision the finished result on your specific property.

3 Professional Installation

Our skilled teams install your new roof using advanced techniques and quality control measures developed specifically for Wisconsin's climate challenges. We properly remove existing materials when needed, disposing of them responsibly and recycling to minimize environmental impact. We thoroughly inspect and prepare the roof deck to ensure a solid foundation for your new roof. We follow precise installation procedures according to manufacturer specifications for optimal performance and full warranty protection. We pay special attention to proper ventilation, moisture barriers, and insulation to address Wisconsin's specific climate challenges. We maintain daily cleanup and site management to minimize disruption to your property.

4 Final Inspection & Ongoing Support

We complete a thorough final inspection and provide all warranty documentation. Our multi-point quality verification ensures every aspect of the installation meets our standards and manufacturer requirements. We remove all project debris, leaving your property clean and tidy with no trace of the construction process. We perform a final magnetic sweep for nails to ensure safety around your home. We register manufacturer warranties on your behalf, ensuring all documentation is properly filed and activated for your protection. We provide detailed maintenance recommendations to help you maximize the life of your new roof through proper care and timely attention to any issues. Our relationship continues long after installation, with ongoing support and priority service.

Client Testimonials

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(608) 299-4967

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Frequently Asked Questions


  • How do I know if my roof needs replacement?

    To know if your roof needs replacement, you need to consider several indicators like age, appearance, and even actual leaks. Most asphalt shingle roofs in Wisconsin last 15-20 years because of our extreme weather. Visible signs include curling or buckling shingles that no longer lie flat. Significant granule loss visible in gutters or downspouts suggests deteriorating shingle protection, particularly concerning before Wisconsin's winter season. Missing shingles or exposed roof felt indicate compromised protection. Interior signs include water stains on ceilings or walls. They indicate leaks that may have already caused hidden structural damage requiring attention. Light visible in your attic through the roof boards shows structural issues that require immediate professional assessment.

  • What is the best time of year for roof replacement in Janesville

    Late spring through early fall is the best time for roof replacement in Wisconsin. However, we successfully complete quality installations year-round in Janesville. The May through October period offers moderate temperatures that allow optimal shingle sealing and adhesion, creating the strongest initial bond. This period also typically provides more consistent weather patterns with fewer rain delays, allowing for more predictable project scheduling. Summer's longer daylight hours enable our crews to complete projects more efficiently, often finishing residential roofs in just 1-2 days to minimize disruption. Fall installations allow new roofing to weather through milder conditions before facing the stress of Wisconsin's harsh winter, an ideal breaking-in period. However, our specialized winter installation techniques allow us to complete quality roof replacements even during colder months when necessary. We use specialized cold-weather adhesives and installation methods developed specifically for Wisconsin's climate challenges. We carefully monitor temperature forecasts to identify appropriate installation windows, even during winter months. We implement additional quality control measures during cold-weather installations to ensure proper sealing and performance. While scheduling flexibility exists year-round, we recommend booking 3-4 weeks in advance during peak season (May-September) to secure your preferred timing, as these months represent our busiest period in Janesville.

  • How much does a new roof cost in Janesville?

    Roof replacement costs in Janesville typically range from 8,000 to 20,000 for an average home. The size and complexity of your roof significantly impact cost, with larger roofs and those with multiple angles, valleys, and penetrations requiring more materials and labor. Roof pitch affects both material requirements and installation complexity, with steeper roofs requiring additional safety measures and installation time. Material choice represents a major cost variable, with basic 3-tab shingles being most economical while architectural shingles, metal roofing, and premium materials increase investment but offer enhanced durability and appearance. Removal of existing roofing layers adds to the project cost, with multiple layer removal requiring more labor and disposal fees than single-layer removal. Underlying damage repair, including deck replacement or structural repairs, may add costs that cannot be fully determined until the existing roof is removed. Ventilation improvements, while adding to initial cost, provide significant long-term benefits for roof longevity and energy efficiency in Wisconsin's extreme climate. Accessibility challenges such as difficult site access, landscape obstacles, or height considerations may require specialized equipment or approaches that affect pricing. We provide detailed, transparent estimates that itemize all costs involved, allowing you to make informed decisions about your investment. We also offer financing options with approved credit to make roof replacement more affordable for Janesville homeowners on various budgets.

  • Will my insurance cover roof replacement?

    Homeowner's insurance covers roof replacement when damage results from sudden, accidental events rather than normal wear and tear. Storm damage from wind, hail, and falling debris represents the most common covered peril for Janesville roofs. Insurance rarely covers replacement because of normal aging, gradual deterioration, or lack of maintenance. These are considered homeowner responsibilities rather than sudden events. Our team includes insurance claims specialists who can provide thorough documentation and photographs of damage to support your claim with your specific insurance provider.

  • What roofing material is best for Janesville homes?

    For most Janesville homes, architectural asphalt shingles offer the best balance of performance, appearance, and value, with expected lifespans of 25-30 years when properly installed and maintained. These premium shingles provide enhanced wind resistance (particularly important in our storm-prone region), better impact protection against hail, and improved aesthetic appeal compared to basic 3-tab options. For premium homes or those seeking maximum longevity, metal roofing systems provide exceptional durability (40+ years), superior snow-shedding capabilities (critical in Wisconsin winters), and excellent wind resistance, though at a higher initial investment. For historic homes in Janesville's older neighborhoods, specialized materials that maintain period authenticity while providing modern protection may be appropriate, including synthetic slate or cedar alternatives that offer traditional appearances with improved performance.

  • How long does a roof replacement take?

    Most residential roof replacements in Janesville are completed in 1-3 days. Average-sized, straightforward asphalt shingle roofs (under 2,500 square feet) typically require just 1-2 days for complete replacement when weather conditions cooperate. Larger roofs with multiple angles, valleys, and penetrations require more time due to their complexity and detail work needed around these features. Material choice affects timeline, with asphalt shingle installations being fastest, while metal, tile, and specialty materials may require additional days due to their specialized installation requirements. Weather conditions significantly impact scheduling in Wisconsin, as proper installation requires appropriate temperature and dry conditions for optimal results and crew safety.

  • Do you offer emergency roof repairs?

    Yes, we provide 24/7 emergency roof repair services throughout Janesville and surrounding communities to address urgent situations regardless of when they occur. Our emergency response team can install tarps or temporary patches to prevent further damage until permanent repairs can be completed, protecting your home's interior from water damage. We implement immediate solutions to stop water infiltration and minimize interior damage during active leaks, preventing secondary issues like mold growth and structural deterioration. We stabilize damaged sections to prevent additional failure that could compromise your home's structure during severe weather events. We properly document all damage for insurance, supporting your claim with professional assessment and photographic evidence.