ROOFING. SIDING. EXCELLENCE.
GAF MASTER ELITE CONTRACTOR • INC. 5000 COMPANY • ROCKFORD’S BEST ROOFER 6 YEARS RUNNING
Roofing & Siding Contractor in Janesville, WI
Martin Exteriors proudly serves Janesville, Wisconsin, one of southern Wisconsin’s largest cities. Janesville is about half an hour up I-39/90 from our Roscoe office, and we work across Rock County. Hail is a regular visitor here: NOAA storm reports show ping-pong-ball hail on the west side of Janesville on August 16, 2025, and baseball-size hail near Edgerton and Evansville on April 18, 2025, the morning NWS Milwaukee issued its first-ever “destructive” severe thunderstorm warning.
We’re licensed in Wisconsin (#1436189), fully insured, and GAF certified, so we can offer a 50-year GAF warranty with 30 years on workmanship on qualifying roofs (GAF eligibility rules apply). Janesville residents get access to the best warranties in the industry, backed by a company with a track record of excellence across the Stateline region.
Janesville Homes and Roofs
Janesville’s older neighborhoods, like Courthouse Hill and the streets around the Rock River downtown, are full of steep, cut-up roofs on houses that are a century old or more. Those roofs need careful flashing work around dormers and chimneys. The east and north sides have more mid-century ranches and newer subdivisions, where a straightforward tear-off usually takes a day.
If your older house on Courthouse Hill or near the river has a tile roof, it’s usually worth saving. We repair clay, concrete and slate tile roofs, from cracked or slipped tiles to worn flashing around chimneys and dormers and the underlayment beneath. After a hailstorm we’ll go over a tile roof piece by piece and show you photos of anything that’s broken. Learn more about our tile roof repair work in Wisconsin.
On older houses we often find more than one layer of shingles or soft decking. Your quote spells out how we handle and price that before we start.
We’re a GAF Master Elite contractor, so we can offer a 50-year GAF warranty with 30 years on workmanship on qualifying roof systems (GAF eligibility rules apply). GAF eligibility requirements, coverage, terms and restrictions apply; see GAF’s warranty details. Every roof inspection is free, and if a repair will do the job, we’ll tell you.
Permits in Janesville
A roof replacement in Janesville needs a building permit. Martin Exteriors pulls and handles all required permits, and we’re registered as a Wisconsin dwelling contractor.
Roof Repair in Janesville
Not every leak means you need a new roof. A lot of Janesville roof problems are small and fixable: a few shingles torn off in a windstorm, a cracked pipe boot, flashing pulling away from a chimney, or a leak in a valley where two roof planes meet. Freeze and thaw cycles open small gaps a little wider every winter, so it pays to catch them early.
We repair asphalt shingle roofs, flashing, vents and pipe boots, plus clay, concrete and slate tile. Every inspection is free. We get up on the roof, take photos and show you what we found. If a repair will do the job, we’ll tell you, and if the roof is near the end of its life, we’ll show you why. More on roof repair and emergency roof repair. See our full guide to roof repair in Janesville.
How a Martin Roof Job Works in Janesville, Step by Step
Here’s what happens from your first call to the final walkthrough. A straightforward tear-off on a Janesville ranch usually takes a day on site. Older, steeper houses near downtown can take longer.
- Free inspection. We check the shingles, flashing, vents and attic ventilation, look for soft decking and extra shingle layers, and take photos so you can see what we see.
- Written estimate. You get a written estimate before any work starts, with the decking and any extra layers spelled out.
- Shingles and warranty. You pick the shingle line and color, and we go over which GAF warranty your roof qualifies for, up to 50 years with 30 years on workmanship (GAF eligibility rules apply).
- Permit. We pull and handle all required permits. If your house is in the Historic Overlay District, we check on the Certificate of Appropriateness first.
- Tear-off and deck repair. We protect your landscaping, strip the old roof down to the deck and replace any damaged wood.
- Installation. Ice and water barrier along the eaves and in the valleys, underlayment, new flashing and drip edge, proper attic ventilation and your new shingles, all installed to GAF’s specifications.
- Cleanup and final walkthrough. We haul away the debris, run a magnetic sweep for nails, inspect the finished roof and walk through it with you. If you chose an enhanced GAF warranty, we register it for you.
GAF gives Master Elite status to fewer than 2% of roofing contractors, and Martin Exteriors is one of them. You can check it on our GAF contractor profile. Wondering what moves the price of a new roof up or down? Our roof replacement cost guide walks through it.
Recent Martin Exteriors Roofing Work
These are real photos from Martin Exteriors roofing jobs around the Stateline, not stock images.
Paying for a New Roof
A new roof doesn’t have to come out of savings all at once. Financing is available in Wisconsin too, as low as $149/month for qualified buyers. See our financing options, or ask about them during your free inspection.
Leak or storm damage in Janesville? Schedule your free inspection or call (815) 624-6278. Someone answers 24/7.
Our Commitment to Quality
Clean lines, straight shingle courses and a yard that’s cleaner when we leave than when we showed up.
Customer Service
Call (815) 624-6278 and a real person answers. We keep you posted while the crew is at your house.
Experienced Project Managers
One project manager runs your job from the first visit to the final city inspection, so you always know who to call.
SCHEDULE A FREE INSPECTION TODAY
We’ll get up on the roof, take photos and walk you through what we found. No pressure, no charge.
Our crews are trained, insured and follow the safety rules on every job, because your family and ours both matter.
Quality: We treat your project like it’s our own
OUR PROCESS
Our artistry is immaculate and our communication and follow-up are the best in the industry. Dedication to quality in all aspects of our business has always been one of our top priorities.
Honesty: We’re open communication with our clients.
OUR COMMUNICATION
You can call us anytime and you will speak to a real person, our open and friendly office staff. You can also come by our offices anytime for a conference and speak to us in person. We’re at your disposal!
Efficiency: We are not new to this business.
OUR TEAM
We treat each other, our clients, and our client’s properties with utmost respect and always maintain an open line of communication.
Why Choose Martin Exteriors?
- We never cut corners but do things the right way, every time;
- We are dedicated to providing quality roofing at fair and reasonable prices;
- We are a local family business that strives to give your family or business the best and most reliable roof;
- We are a roofing company you can trust and rely on. Come by our office and meet us in person anytime!
Justin was great. The whole process was very quick, smooth and professional. They took the time to explain the process of working with our insurance claim. The roof looks great and the cleanup crew was amazing. I will give there contact info to anyone that needs a roof done. Would give 6 stars if i could.
Chris was great walked us through the entire process. He was easy to contact, returned calls and texts. The roof looks great. We are very please.
The salesman was so knowledgeable and courteous. Their prices are competitive and I was overjoyed with the quality of work. My house looks brand new. I recommend this company to my friend that needed new siding and I’d recommend them to anyone.
Justin and Trish were awesome. They took the time to walk me through the process of getting my roof replaced and assisted with the claims process. 10/10 would recommend to anybody
Couldn’t ask for a better experience. Very professional. Never felt like they were trying to over sell us and took the time to explain everything about the roof materials and why they did things the way they do. Their clean up is excellent as well. No debris was left behind. You will definitely not be disappointed using them!!
Great company! Very professional and they truly care about you as a customer. I highly recommend them!
What a great company to work with. We tried to reach out to multiple local companies for a quote. Martin Exteriors Roofing & Siding was the only one to call us back right away. Very knowledgeable team. They kept us updated throughout the repair process. Would recommend to anyone looking for a reliable thorough contractor. 5 Stars!
Great job, great company. Quick, reliable and always professional, from the start with the inspection and estimate right up to the completion and clean up. No complaints or worries.
Our partners
Commercial Roof Contractors
From retail along Milton Avenue to the industrial parks on the south side, Janesville has plenty of flat and low-slope roofs. We inspect, repair and replace them, and work around your hours.
We also offer commercial maintenance plans, coatings and restoration, and TPO, EPDM, modified bitumen and metal roofing. See commercial roof repair and maintenance.
Roof Replacement Contractors
Sometimes patching just buys you another leak. When it’s time for a new roof, we tear off down to the deck, replace any bad wood and install the full system the way the manufacturer specifies. You’ll get a written price before we start. See our roof replacement page for how it works. For Janesville homes, see our page on roof replacement in Janesville.
Siding Company
Hail that dents siding usually cracks vinyl too, especially on the west wall. We’ll check whether a matching repair is possible or if a full side or whole house makes more sense, and we’ll tell you straight if your old color is discontinued. See our Janesville siding page for hail-ready options. For broken, loose or rotted boards, see siding repair in Janesville.
Storm Damage Repair
Rock County has logged hail in every year since 2010. After a storm, call us. We’ll check the roof and siding, take photos and help with your insurance claim. If it’s not worth a claim, we’ll say so. Read more about our storm damage repair. See our guide to hail damage roof repair in Janesville.
CONTACT US
From the established neighborhoods near Courthouse Hill to the growing communities along Highway 14, we serve all of Janesville and surrounding Rock County. We serve homeowners and businesses in Janesville and nearby Beloit, Clinton, Roscoe and South Beloit. You can also see everywhere we work across southern Wisconsin. Contact us for a free consultation and roof estimate.
Martin Exteriors Roofing & Siding: Roscoe Office
11704 Main St, Roscoe, IL 61073
(815) 624-6278
What Homeowners Say About Martin Exteriors
“Had shingles blown off by high winds, called Martin Exteriors and talked to Nick, he came out and assessed the damage and within the week quotes were done and roof repaired. Excellent work, great communication and very friendly. Would highly recommend to others. Thank you.”
Google review
“Martin Exteriors was one of a few companies I had bidding on my roof replacement. I worked with Nick, who answered all my questions, especially in areas of upgrades. Even with those upgrades, the price was fair and in between other bids.”
Joe K., Google review
“Highly recommended Martin Exteriors. Jeff walked us through the entire process at our pace. Never pressured any points. Was always available. Work was done on time, on budget. Just a great experience overall. No surprises!”
Thomas G., Google review
Roofing Near Janesville and Across Southern Wisconsin
Martin Exteriors has been family-owned since 2006. Our Janesville jobs are run out of our Roscoe office at 11704 Main St, Roscoe, IL 61073, about half an hour down I-39/90. Close by, we also work in Beloit, Clinton, Delavan, Elkhorn and Lake Geneva, and just over the state line in South Beloit, Roscoe and Rockton. See everywhere we work on our southern Wisconsin page.
Start with a roof inspection if you’re not sure what your roof needs. After a storm, our hail damage repair and wind damage repair pages explain what to look for. We install asphalt shingle roofs and metal roofing, handle commercial roof repair and maintenance, and as a Certified James Hardie Installer we can do your siding in Janesville at the same time as the roof.
Call (815) 624-6278 to schedule a free inspection. Someone answers 24/7.
Roofing in Janesville: Local Details
Janesville Homes and Roof Age
Census estimates put the median Janesville home at 1972. About 30% of homes in the city were built before 1960 and another 33% between 1960 and 1979, so a big share of Janesville houses are on their second or third roof. About two thirds are owner-occupied. On the older homes we often find more than one layer of shingles and board decking, and on the 1960s and 1970s ranches the attic ventilation usually needs an upgrade when the roof is replaced.
Storms in Janesville
Janesville has a long storm record in NOAA’s Storm Events Database. On June 18, 2010, thunderstorm winds estimated at 80 mph uprooted at least 50 large trees in the city, ripped the metal roof off a business and blew the roof off a carriage house. On August 2, 2011, hail 2.25 inches across fell as a storm moved along Highway 11 from downtown. On May 2, 2018, wind-driven hail about 1.5 inches across damaged siding in the Cedar Crest neighborhood and the streets around it. More recently, 1.5-inch hail was reported in Janesville on April 2 and April 17, 2026.
From 2010 through 2025, NOAA counts 81 hail reports in Rock County, 62 of them an inch or larger, along with 124 severe thunderstorm wind reports. If a storm comes through, call (815) 624-6278 and we’ll inspect the roof and siding for free.
Permit Details
Martin Exteriors pulls and handles all required permits for your Janesville roof. If your house is in the Historic Overlay District, any exterior work, roof replacement included, needs a Certificate of Appropriateness before the building permit is issued. We take care of that for you before we schedule the job.
Where We Work in Janesville
We work all over Janesville, from the streets near downtown like Court Street and Racine Street, to the neighborhoods off Randall Avenue, Mineral Point Avenue, Ruger Avenue and Wright Road, and out along Milton Avenue. Nearby, we also serve Beloit, Clinton, Milton and Roscoe.
We’re a certified dwelling contractor in Wisconsin, and for siding we’re a Certified James Hardie Installer. See James Hardie siding, siding in Janesville and roof replacement.
Janesville Roofing FAQ
Do you work in Janesville?
Yes. We work across Janesville and Rock County from our office at 11704 Main St, Roscoe, IL 61073. Call (815) 624-6278. Someone answers 24/7.
Who handles roof permits in Janesville?
Martin Exteriors does. We pull and handle all required permits, and if your home is in the Historic Overlay District, we also take care of the Certificate of Appropriateness that exterior work like a roof replacement needs. You have nothing to file yourself.
How bad is hail in Janesville?
Bad enough to plan for. NOAA lists 81 hail reports in Rock County from 2010 through 2025, 62 of them an inch or larger. Hail 2.25 inches across fell near downtown Janesville on August 2, 2011.
How old are most Janesville homes?
Census estimates put the median Janesville home at 1972, and about 63% were built before 1980. Many of those houses are on their second or third roof, so we check for extra shingle layers and soft decking.
Are you licensed in Wisconsin?
Yes. We’re a certified dwelling contractor in Wisconsin (#1436189), and we’re licensed in Illinois as a roofing contractor (104.017824).
Do you offer financing?
Yes, with payments as low as $149/month for qualified buyers.
Do you do roof repair in Janesville, WI?
Yes. We repair leaks, blown-off shingles, flashing, vents and pipe boots, plus clay, concrete and slate tile roofs, all over Janesville and Rock County. Every inspection is free, and if a repair will do the job, we’ll tell you.
Repair or replace: how do you decide?
We look at the roof’s age, how widespread the wear is, the decking, and whether problems keep coming back. One problem spot on a younger roof usually means a repair. Widespread wear on a roof around 20 years old or more usually means it’s time to replace. We’ll show you photos either way.
Are you a GAF Master Elite contractor?
Yes. GAF gives Master Elite status to fewer than 2% of roofing contractors, and only Master Elite contractors can offer a 50-year GAF warranty with 30 years on workmanship (GAF eligibility rules apply). We can offer it in Janesville on qualifying roof systems, and you can look us up in GAF’s contractor directory.
How long does a roof replacement take in Janesville?
A straightforward tear-off on a ranch or newer home usually takes a day on site. Older houses with steep, cut-up roofs near downtown and Courthouse Hill can take longer, and weather can move the schedule.
Where is your nearest office to Janesville?
Our Roscoe office at 11704 Main St, Roscoe, IL 61073, about half an hour down I-39/90. Call (815) 624-6278. Someone answers 24/7.
Do you offer free roof inspections in Janesville?
Yes. Roof inspections are free, with no obligation. We take photos and walk you through what we found.
Before You Hire a Roofer in Janesville
Ask any roofer for proof of license and insurance, a written scope with the decking price spelled out, and who your contact will be during the job. We hand all of that over at the first visit. Financing is available, with payments as low as $149/month for qualified buyers; see our financing options.
Martin Exteriors Roofing & Siding, our family serving your family since 2006, is a Wisconsin dwelling contractor and a licensed Illinois roofing contractor (license 104.017824), a GAF Master Elite and President’s Club contractor, and a four-time Inc. 5000 company (2021 to 2024). We were voted What Rocks Rockford Best Roofer, 6 years running (2020 to 2025), and What Rocks Rockford Best Siding, 2021 to 2025.
