Martin Exteriors Roofing & Siding works across Rock County every week, and Janesville is about half an hour up I-39/90 from our Roscoe office. We hold Wisconsin license #1436189. We’re family-owned, in business since 2006, a GAF Master Elite contractor and a four-time Inc. 5000 company. We have been voted What Rocks Rockford Best Siding Contractor, 2021 to 2025. Call (815) 624-6278.
Comparing siding contractors in Janesville, WI? We are a Certified James Hardie installer, we are bonded and insured, and every siding inspection is free.
Janesville Siding Cost
| Siding | Installed, per sq ft |
|---|---|
| Vinyl | $6.50 to $8.25+ |
| Insulated vinyl | $11.75 to $16.25+ |
| James Hardie fiber cement | $12.00 to $20.00+ |
Soffit, fascia and any trim a project needs are quoted separately. Vinyl doesn’t always need trim, but Hardie trim can cost as much as the siding itself. These ranges aren’t a quote. We see every job, talk it over with you and plan it, and then we quote it. Get your free inspection or call (815) 624-6278.
Janesville Siding Takes a Lot of Hail
If you’ve lived in Janesville a while, you’ve probably had your siding hit. Rock County has logged hail every year since 2010. On August 16, 2025, NOAA storm reports showed ping-pong-ball hail on the west side of Janesville. Earlier that year, on April 18, 2025, baseball-size hail fell near Edgerton and Evansville the morning NWS Milwaukee issued its first-ever “destructive” severe thunderstorm warning.
Hail that dents a car will crack vinyl, especially older vinyl that’s gotten brittle in the cold, and it leaves round dents in aluminum. That’s the main reason we spend more time talking about James Hardie with Janesville homeowners than almost anywhere else we work.
Vinyl vs James Hardie for Hail Country
James Hardie fiber cement is a dense, non-combustible board that stands up to hail and impact far better than vinyl. It has the look of painted wood and suits Janesville’s older homes. It costs more up front, and it’s backed by James Hardie’s own product warranty.
Vinyl siding from Mastic and Norandex is still a great choice for a lot of houses, and it’s the budget-friendly one. Thicker and insulated panels resist dings better than the thin stuff from decades ago, and installed right, vinyl often lasts 20 to 40 years. If a few panels do get hit, they’re quick to replace, as long as the color is still made. Martin Exteriors is VSI certified through the Vinyl Siding Institute.
That last point matters. If your current color has been discontinued, a hail repair may not match. We’ll tell you straight when that’s the case, and when the rest of a wall or the whole house makes more sense.
Courthouse Hill to the East Side
Janesville’s older neighborhoods, like Courthouse Hill and the streets near the Rock River downtown, are full of houses that are a century old or more. They’re tall, with lots of corners, porches and trim, and they often have wood siding under newer layers. Those jobs take more prep and more careful trim work, and Hardie’s wood-like profiles tend to fit them best. If your home sits in a local historic district, let us know. We’ll check what review applies before we order anything.
The east and north sides have more mid-century ranches and newer subdivisions. Those are simpler houses to side, and most siding jobs there take 1 to 2 days.
On every house, the old siding comes off first. We handle removal of any old siding, asbestos included. We repair soft sheathing, and most jobs get new house wrap. We install in winter too.
Storm Damage and Insurance
After a storm, we’ll inspect your siding and roof for free, photograph and measure the damage, and help you with your insurance claim if it’s worth filing. If it isn’t, we’ll say so. See hail damage repair.
When you file a claim, we meet your adjuster at the house, review the estimate with you line by line, and prepare and submit supplements when damage was missed, with you approving each step. You file the claim and pay your deductible, and your insurance company decides what is covered.
If hail cracked only a few panels on one side, our Janesville siding repair page explains replacing just those boards or sections.
What Customers Say
“After a recent hailstorm caused significant damage to our roof and siding, we reached out to Jeff Smith with Martin Exteriors, and we’re so glad we did. From the very first inspection to the final cleanup, Jeff and their team were incredibly professional and easy to work with. What really set Martin apart was their excellent communication. Jeff kept us informed every step of the way, clearly explaining the scope of the damage, the repair process, and working closely with our insurance.”
Jim V., Google review
“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
Janesville Siding Storms in NOAA Records
A few more dated storms from NOAA’s Storm Events Database show what Janesville walls have taken:
- May 2, 2018: wind driven hail about 1.5 inches across damaged siding in the Cedar Crest neighborhood and surrounding streets.
- June 22, 2024: the EF2 tornado that crossed the south side peeled or knocked loose siding and stripped soffit and fascia on several buildings, according to the National Weather Service survey.
- June 25, 2024: hail up to half dollar size was reported northeast of downtown.
Wind driven hail usually hits one or two walls hardest, so check the sides that faced the storm. If the roof took hits too, see Janesville roof replacement and Janesville hail damage roof repair.
Source: NOAA NCEI Storm Events Database; each date above links to its event record.
Roofing in Janesville
A hailstorm that cracks siding usually does a number on the roof too. See our Janesville roofing page, our southern Wisconsin page, and the siding installation overview.
Janesville Homes by Decade
Census estimates (ACS 2020 to 2024) count about 29,300 homes in Janesville, with a median build year of 1972. About a third went up in the 1960s and 1970s, about 14% were built before 1940, and about 22% were built in the 1990s and 2000s. Roughly two thirds of occupied homes are owner occupied.
Houses from the 1960s and 1970s often still have aluminum or early vinyl, the kind of siding that hail dents and cracks most easily. The 1990s and 2000s homes are a different case: their builder vinyl is now about 17 to 36 years old, and fading on the south and west walls is usually the first sign it is wearing out.
Repair or replace? A few cracked panels on one side, in a color that is still made, can usually be fixed, and our Janesville siding repair page explains how. When most walls are faded, dented or loose, or the color has been discontinued, a full re-side to thicker vinyl or James Hardie usually makes more sense than repairing one storm at a time.
Siding Replacement in Janesville, WI
Hail is the big worry for siding in Janesville. When older vinyl has turned brittle and split, or aluminum is pocked with round dents on more than one side of the house, fixing single panels stops adding up. Replacing all of it lets us check the sheathing underneath and pick a new color or profile, in vinyl or James Hardie fiber cement, that suits an older home near downtown or on Courthouse Hill.
For a Janesville re-side we can quote Norandex or Mastic vinyl next to James Hardie and walk through the tradeoffs on your walls. Installed price ranges for each are in the Siding Prices section below. Your own number comes from a free inspection and a written estimate. Call (815) 624-6278.
Siding Prices in Janesville
Because hail is the big worry in Janesville, the choice between vinyl and James Hardie is usually the biggest factor in the price. Here are typical installed price ranges.
- Vinyl siding: about $6.50 to $8.25+ per square foot installed
- Insulated vinyl: about $11.75 to $16.25+ per square foot installed
- James Hardie fiber cement: about $12.00 to $20.00+ per square foot installed
Soffit, fascia and any trim a project needs are quoted separately. Vinyl doesn’t always need trim. With Hardie, trim work can cost as much as the siding itself, so every project has to be seen, discussed and planned before we can quote it.
For a side by side look at each material, see our siding installation page.
Free Siding Estimate in Janesville
We’ll come out, look over every wall, and bring vinyl and Hardie samples so you can compare them on your house. Financing is available, with payments as low as $149/month for qualified buyers (see financing).
Schedule your free inspection or call (815) 624-6278.
Recent Siding and Roof Job in Janesville, WI
On a full exterior refresh in Janesville, old siding came off and Norandex Cedar Knolls vinyl siding in the color Deep Water went on, paired with GAF Timberline HDZ shingles in the color Birchwood. See the Janesville roof and siding before and after.
Another Janesville home, on Laurel Ave, got new Mastic vinyl siding in the color Rock Harbor. See the Laurel Ave siding before and after.
Janesville Siding FAQ
What siding holds up best to hail in Janesville?
James Hardie fiber cement handles hail and impact much better than vinyl. Thicker or insulated vinyl from Mastic or Norandex is a good lower-cost option and is quick to repair if a few panels get hit.
Hail cracked my siding. Can you match it?
If your color and profile are still made, usually yes. If they’ve been discontinued, we’ll tell you honestly and explain your options.
Do you work on older homes on Courthouse Hill?
Yes. Older Janesville homes take more prep and trim work, and we often find wood siding under newer layers. If your home is in a historic district, we’ll check what review applies before ordering materials.
How long does a siding job take in Janesville?
Most siding jobs take 1 to 2 days. Large or older homes can take longer, and we’ll tell you up front.
Are you licensed in Wisconsin?
Yes. Our Wisconsin license number is #1436189.
Do you install siding in the winter?
Yes. We install year-round, winter included.
What does new siding cost in Janesville?
Typical installed prices are about $6.50 to $8.25+ per square foot for vinyl, about $11.75 to $16.25+ for insulated vinyl and about $12.00 to $20.00+ for James Hardie fiber cement. In Janesville, the choice between vinyl and James Hardie usually moves the price the most. Your free inspection comes with a written price.
How do I know if my Janesville siding needs a repair or a full replacement?
Look at how much of the house is affected. A few cracked or dented panels on one wall, in a color that’s still made, can usually be replaced. Fading, cracks or loose panels on most walls, or a discontinued color, usually point to a full re-side. We’ll walk the house with you at a free inspection and tell you which one fits.
Can you re-side a Janesville duplex or townhome?
Yes. We re-side duplexes and townhomes as well as single family houses, with one color and profile across the building. If an association has rules for exterior materials or colors, bring them to the estimate so the siding we propose fits them.
Will insurance pay to replace hail damaged siding in Janesville?
It depends on your policy and what your insurer finds. We meet your adjuster at the house, review the estimate with you line by line, and prepare and submit supplements when damage was missed, with you approving each step. You file the claim and pay your deductible, and your insurance company decides what is covered.
Has hail damaged siding in Janesville before?
Yes. NOAA’s Storm Events Database records wind driven hail on May 2, 2018 that damaged siding in the Cedar Crest neighborhood, and the June 22, 2024 tornado on the south side left peeled siding and stripped soffit and fascia along its path.
