Janesville Superior Roofing serves Hanover, WI, a tight-knit Rock County community of 179 residents west of Janesville along the Rock River corridor. With 34 inches of annual snowfall, over 31 inches of rainfall, and freeze-thaw cycles that strain every roofing material from asphalt shingles to standing seam metal panels, this area demands contractors who understand Wisconsin weather at a structural level. Our team holds Master Elite Contractor status through GAF, carries a C-39 Roofing Contractor License, and maintains general liability insurance with over $5 million in umbrella coverage plus workers' compensation. With 28 years in the roofing business, we give Hanover property owners confidence from the first inspection through final cleanup.
We specialize in storm damage roof repair, ice dam removal, flat roof waterproofing, TPO membrane installation, residential shingle replacement, roof deck restoration, attic ventilation upgrades, hail damage assessment, agricultural and pole barn roofing, and new construction roof installation throughout Hanover and the surrounding Rock County area. Our material selections include GAF Timberline HDZ shingles, synthetic underlayment, self-adhering ice and water shield, and silicone-based coating systems proven to perform through Wisconsin's seasonal extremes. Every project is backed by workmanship standards that match the demands of this climate and the expectations of the property owners we serve.
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We deliver roof repair services that address leaks, storm damage, and structural issues without delay, handling emergency roof repair, roof leak detection, and targeted repairs for shingles, flashing, and roof penetrations. Our 28-year track record means we have seen every failure mode that Hanover's climate can produce, and we approach each job with the diagnostic discipline that Master Elite Contractor status requires. This same level of care and expertise extends to projects we do in nearby communities like Afton, WI.
A leaking roof can damage insulation, drywall, and framing within hours. We provide 24-hour emergency roof repair in Hanover, WI to stop active leaks and limit interior damage. Our crew begins with a detailed roof leak detection inspection covering shingles, underlayment, flashing, roof valleys, and attic spaces to locate the exact entry point of water. This allows precise roof leak repair instead of temporary patchwork.
We repair missing, lifted, and blown-off shingles caused by high winds, address roof punctures from fallen branches, and restore sagging or structurally compromised sections. Fast action reduces the risk of mold, rot, and costly framing repairs that multiply quickly in Wisconsin's humid summers.
Rock County averages over 45 severe weather days annually, bringing heavy rain, hail, snow, and winds that regularly exceed 50 miles per hour. We provide complete storm damage roof repair to restore roofing systems after these events. Our team repairs hail damage issues such as cracked shingles and granule loss, and performs wind damage roof repair for lifted edges, detached flashing, and exposed underlayment.
After heavy rain, we check for valley leak repair needs and hidden moisture intrusion. In winter, Hanover's temperatures routinely drop below 10 degrees
Fahrenheit, making ice dam roof repair and snow damage roof repair critical services. Freeze-thaw cycles, which Rock County experiences dozens of times each winter, can split materials and loosen fasteners. We reinforce vulnerable areas to reduce repeat problems and document all damage clearly to support insurance claims when needed.
Roof penetrations cause some of the most persistent leaks. We specialize in chimney roof leak repair, skylight roof leak repair, and flashing roof leak repair using proven installation methods. For chimneys, we replace deteriorated step flashing and counter flashing and seal masonry joints where needed. Skylight roof leak repair requires careful integration with surrounding shingles, so we inspect gaskets, curb seals, and fasteners before resealing or reflashing the unit. Each repair targets the source of the issue, not just the visible stain inside the home.
We provide clear estimates and same-day roof repair when possible for minor shingle damage, small flashing separations, and localized water damage repair. For more extensive problems such as sagging roof repair or structural damage, we outline phased solutions that match your budget and long-term goals. Our licensure and insurance coverage mean you are protected at every stage, from a quick shingle replacement to a full structural repair, with workmanship that meets Wisconsin building standards.

We deliver roof replacement services in Hanover, WI that address aging materials, storm damage, and structural wear. Our 50-year warranty on residential shingle roofs reflects both the quality of materials we install and the installation standards we hold ourselves to as a Master Elite Contractor. From full tear-off replacement to insurance claim roof replacement, we cover residential and commercial properties throughout the Hanover area.
A full roof tear-off replacement removes all existing shingles, underlayment, and compromised decking down to the roof deck. This approach works best for older homes, particularly structures built before 1990, when asphalt shingles averaged a shorter 15- to 20-year service life under Wisconsin climate conditions. We inspect the wood structure, replace any damaged sections, and install a complete roof system built to current codes.
Our system includes ice and water shield in vulnerable areas, synthetic underlayment for moisture protection, proper flashing at chimneys and valleys, and ridge and intake ventilation upgrades using GAF components that align with our Master Elite Contractor certification. That certification is awarded to fewer than 2% of roofing contractors in North America and requires demonstrated installation quality, ongoing training, and adherence to manufacturer specifications. We often recommend roof replacement with upgraded ventilation because Hanover's attic temperatures can exceed 140 degrees Fahrenheit in summer, accelerating shingle degradation from below.
Rock County has recorded hail events in roughly 60% of storm seasons over the past decade. We handle roof replacement after hail storms and guide homeowners through the insurance claim process from start to finish. We photograph impact marks, creased shingles, lifted flashing, and granule loss, then provide a written report that supports your claim. We meet with adjusters when requested, review scope and pricing for accuracy, and explain coverage details in plain terms. Once approved, we schedule replacement promptly to prevent further water intrusion.
We complete roof replacement for residential and commercial properties throughout the Hanover area. For homes, we often perform roof replacement before listing or for real estate sale. A new roof with a transferable 50-year warranty improves buyer confidence and reduces inspection objections. For commercial buildings, we evaluate flat or low-slope membrane systems, drainage design, insulation thickness, and energy performance requirements, coordinating with property managers to minimize disruption to tenants or operations.
Garage roof replacement and porch roof replacement often get delayed until leaks appear. Detached garages frequently show early shingle failure due to limited ventilation, a problem amplified in Hanover's climate where temperature swings between seasons exceed 100 degrees Fahrenheit. We replace roofs on sheds, pole barns, covered patios, and accessory dwelling units, correcting airflow issues during replacement and matching shingles and colors to the main house for a consistent appearance.

Janesville Superior Roofing handles commercial roof repair, replacement, and installation for offices, retail buildings, warehouses, and multi-unit properties in Hanover, WI. Our 30-year warranty on flat roofs signals the long-term commitment we make to every commercial property owner we serve.
We provide prompt commercial roof repair for leaks, punctures, membrane separation, flashing failure, and storm damage. Our technicians perform targeted commercial flat roof repair on thermoplastic polyolefin (TPO), ethylene propylene diene monomer (EPDM), and modified bitumen systems. We locate moisture intrusion using moisture scans, then repair seams, replace damaged sections, and reseal penetrations. Ongoing commercial roof maintenance plans provide scheduled inspections, debris removal, and minor repairs that extend roof life and reduce emergency service calls, a practical investment given the repair costs that unchecked moisture intrusion generates in Wisconsin's freeze-thaw climate.
When repairs no longer provide value, we guide you through commercial roof replacement with clear cost comparisons and system options. We evaluate insulation condition, decking integrity, and drainage performance before recommending a solution, then follow manufacturer specifications and local building codes throughout installation. We install TPO and EPDM single-ply membranes, modified bitumen, and metal roofing systems, improving slope and upgrading insulation to meet current energy codes. This is a meaningful improvement given that Wisconsin energy costs average 10 to 15% higher in winter months than the national baseline. Our 30-year flat roof warranty covers the completed system, giving property owners confidence in long-term performance.
We specialize in commercial flat roofing solutions built for Wisconsin weather, paying close attention to drainage, seam integrity, flashing details, and rooftop equipment curbs. For aging but structurally stable roofs, we apply silicone and acrylic commercial roof coating systems that seal minor cracks, improve ultraviolet (UV) resistance, and extend service life without a full tear-off. We assess each roof's condition before recommending coatings, and if trapped moisture or structural damage exists, we address those issues first.
We protect Hanover properties with structured annual roof inspections covering shingles, flashing, vents, skylights, gutters, and attic ventilation. Each inspection includes photo documentation, assessment of structural decking, evaluation of previous repairs, and written recommendations with priority levels. Seasonal maintenance prepares roofing systems for Rock County's more than 50 freeze-thaw cycles per season. Spring and fall visits focus on debris removal, gutter testing, sealant inspection, and storm damage assessment, while winter preparation confirms attic insulation and ventilation performance to reduce ice dam risk.
When a roof shows surface wear but remains structurally stable, our roof restoration services restore flexibility and performance at a fraction of replacement cost. We apply silicone roof coating on flat and low-slope roofs that experience ponding water, elastomeric roof coating on metal and modified bitumen systems where seasonal movement occurs, and reflective roof coating systems that reduce rooftop surface temperatures during Hanover's July highs near 83 degrees Fahrenheit. Proper preparation, including seam reinforcement and flashing repairs, ensures durable protection without unnecessary disruption to building operations. Whether the goal is a targeted repair, a full replacement backed by industry-leading warranties, or a structured maintenance program, Janesville Superior Roofing delivers roofing solutions built for the demands of Hanover's climate and the standards its property owners deserve.