Window, Siding, & Door Installation in Janesville, WI with 40+ Years Experience
Our mission is to provide the finest products and services to our customers at fair and reasonable prices, to handle all issues that arise within a reasonable time frame and in a professional manner, and to remember that “Our Customers Come First” at all times.
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Office/Showroom
Office Hours
8:00am – 4:30pm
After Hours By Appointment
Weekends By Appointment
Our Services
We build to the highest quality standards
so you get the best performance and reliability in the business.
Window Installation & Replacement
Trust our expert installers to upgrade your home’s energy efficiency and curb appeal. We specialize in custom-fitting high-performance windows that are durable, eco-friendly, and tailored to match your home’s unique architectural style. From bay windows to sliders, we ensure a perfect fit every time.
Siding Installation & Replacement
Protect and upgrade your home with our professional siding installation. Whether you prefer the durability of steel or the versatility of vinyl, our team ensures a flawless installation that stands up to Wisconsin weather. We provide maintenance-free siding solutions that increase your home’s value and thermal performance
Entry & Patio Door Installation & Replacement
Enhance your home’s security and style with our premium door installation services. From welcoming front entry doors to functional patio sliders, we install high-quality doors designed for superior energy efficiency and long-lasting performance. Let us help you make the perfect entrance.
Truly Insulated Mainframe
Two chambers filled with the same insulation found in high-end coolers
Offers seven times better R-Values than hollow-frame vinyl windows
Insulates twice as well as competitive foam-filled frames
Aesthetic Engineering
Designed to match the beauty and elegance of wood windows
Narrowline, dedicated extrusions adds beauty without sacrificing strength
Coved, mitered interior glazing beads add styling and additional security
Climate-Specific Performance
ENERGY STAR® qualified for all climate zones
Some of the lowest U-Factor and SHGC numbers available in the market
Secure, long-lasting seal, with edge deletion, provides superior performance that’s guaranteed to last a lifetime
Secure Sash Structure
Low-profile French cam locks routed into the frame
Locks fastened through three layers of .075 iUPVC
Scores 10 out of 10 on AAMA forced entry test
Airtight Construction
Fusion-welded with no weep holes
Triple weather stripping at every point of contact
Dedicated extrusions and step jambs
One of the lowest published air leakage rates available in the marketplace
Superior Functionality
Self-tensioning block-and-tackle balance system; same system used by the higher-cost, name brands
Engineered to last four times as long as competitive systems
Locking pin and shoe ensures easy, secure tilt-ins for simple cleaning
Coordinated recessed night latches extend out from the frame to allow ventilation
Up To 27% More Viewing Area
27% Greater visible viewing area than traditional vinyl windows
Mulled with one of the narrowest systems available to maximize viewing area
Precision Frame Fabrication
Fully fusion-welded frames and sashes provide stronger, more airtight windows than mechanically fastened competitive products
Complete closed frame system keeps water from entering the mainframe, eliminating the need for unsightly weep holes
Made from iUPVC, a high-tech, synthetic polymer that offers significantly better energy efficiency than wood or metal windows
About Bob's Custom Windows & Siding
Extraordinary Craftsmanship
At Bob’s Custom Windows and Siding, quality products and workmanship does make the difference. Putting our customers first is our number one priority! Bob’s Custom Windows and Siding, Inc. is located at 1015 North Parker Drive in Janesville, Wisconsin. Our showroom features examples of our window and siding lines, so you can see and feel the quality of our products.
Bob’s Custom Windows and Siding is affiliated with Advanced Construction of Janesville LLC. While collaborating and working closely with Advanced Construction of Janesville, we can offer our customers more than just windows and siding. In other words, we can now offer both residential and commercial construction, including remodeling, roofing, excavating, egress windows, and more.
Working With Us Is Easy
Getting Your Quote - Scheduling Your Job - Relax
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OUR PARTNERS
Proudly Serving Southern WI For 40+ Years
FINANCING is Available
Looking for ways to make your home improvement project more affordable? We offer a number of financing options for qualified customers.
Offices
Head Office
Bobs Custom Windows & Siding is located in Janesville, WI where we have serviced our local communites for over 40+ years in business.
Phone: 608.756.0735
Email: bobscustom@gmail.com
Hours:
Monday-Friday, 8:30am-4:30pm
Saturday by Appointment
Free Consultation
Get A Free Quote
Office
Visit Our Showroom
Bobs Custom Windows & Siding is located in Janesville, WI, where we have serviced our local communities for 40+ years in business.
Phone: 608.756.0735
Email: bobscustom@att.net
Hours:
Monday-Friday, 8:00am-4:30pm
After hours By Appointment
Weekends By Appointment
Service Area
- Rock County
- Dane County
- Walworth County
- Green County