Bob's Custom Windows & Siding
“They were so courteous, they cleaned up after each day, they did great work and worked well together.”
Best Siding Contractors in Janesville, WI
15 companies listed · 9 in Janesville · 2 open 24/7 · 7 open weekends · 14 rated 4.5+
Data verified October 20, 2026
Wisco Roofing and Windows
“Not only that but the customer service and the communication throughout the entire process was one of the smoothest and easiest experiences I've had with window replacements.”
ABC Seamless
“From our salesman Roger to installers Darius and Bill, we were very impressed with not only the quality of the front door with sidelights, but the service, their personalities and installation was amazing!”
Distinct Exteriors & Roofer in Janesville
“John was very personable, knowledgeable, and took care of a lot of the little things as well as most importantly doing a great job on the roof.”
DMR Exteriors
“Install crew exceeding expectations and left everything clean and completed within the expected timeframe.”
Budget Home Improvement Inc.
“Budget construction installed all our windows we were very pleased with the work done.”
Listed for homeowners in and around Janesville, WI, these 15 companies work on exterior walls. Details about materials, color ranges and fade cover are drawn from each company's own site, and the review quotes underneath are public reviews.
Area overview: Janesville, WI
Of the 15 companies we list here, 9 are in Janesville itself and 6 come from Beloit (4, 10 mi) and Edgerton (1, 9 mi). The companies on this page are rated from 4.3 to 5.0 across 462 reviews; 2 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (84%) and responsiveness (80%). The topics that come up most in reviews of the companies on this page are "communication", "estimates" and "price". 2 are open around the clock; 7 are open on Saturdays and 4 on Sundays. The services the companies on this page list most often on their websites are gutters (2), roofing (2) and siding (2). 5 show a license on their websites; 1 lists staff certifications (GAF) and 4 have a BBB rating of A or A+. 9 have ten or more years of experience, the longest 44 years. 2 offer emergency call-outs; 4 offer financing or payment plans; 9 give free estimates; 1 is family- or locally-owned and 2 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
How many of these companies publish a website?
Websites are listed for all 15 companies on this page. For wall work the site is worth opening, because photographs of finished houses in the same climate tell you more than any description. Look for jobs with the same material you are considering, and for pictures taken from close up rather than across the street.
Hulick Windows & Siding
All Exteriors Plus
Total Exteriors LLC
“Jason and the team provided a timely, temporary fix for a leak to protect from all the spring storm weather until we could get the fix scheduled.”
Aurum Contracting
“Triston Shea was our project manager for which he helped my husband and I through all the difficult decisions of choosing the roof that met our needs and expectations.”
Above the Peak Construction LLC
“Dave and his crew are real go getters and we will be having them come to build our new shop as we expand.”
H&H Exteriors LLC
“The roof looks amazing your crew was very professional cleaned up all debris that was left over your prices are amazing would definitely recommend you to anyone I know.”
Tabco Roofing & Siding
“Tabco did such a great job with the flat roof I hired them to fix that I hired them to replace my entire roof.”
S & S Roofing Co
“They stand behind their work throughout the entire process & even afterwards.”
Guardian Home Improvement
“New roof went on fast and did a great job cleaning up”
Why these companies made our list
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