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.

5.0 ★★★★★ | Facebook Reviews 4.9 ★★★★ | Google Reviews 5.0 ★★★★★ | Online Reviews

Fast & Easy Quote

Get Your Free Quote Today!


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.


Sunrise Windows

Sunrise Windows are energy-efficient windows that are known for their durability, customization options, and eco-friendliness. They offer a variety of styles, materials, and colors to suit different architectural styles of homes.

emco siding services

Emco Siding

Emco siding is a type of Steel Siding produced by the company Emco Building Products. It is known for its low maintenance and durability and is available in a variety of colors and styles to suit different architectural styles.

Provia door

Provia Doors

ProVia doors are a line of high-quality residential and commercial doors produced by ProVia, They offer a range of styles and materials, including fiberglass and steel, and are known for their durability, energy efficiency, and customizability.

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

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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

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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

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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

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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

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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

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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

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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

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About Bobs 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, 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

Get Your Free Estimate Today


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.


Head Office

Bobs Custom Windows & Siding is located in Janesville, WI where we have serviced our local communites for over 40+ years in business.

1015 N. Parker Drive, Janesville, WI 53545

Phone: 608.756.0735

Monday-Friday, 8:30am-4:30pm
Saturday by Appointment

Free Consultation

Get A Free Quote


Visit Our Showroom

Bobs Custom Windows & Siding is located in Janesville, WI, where we have serviced our local communities for 40+ years in business.

1015 N. Parker Drive, Janesville, WI 53545

Phone: 608.756.0735

Monday-Friday, 8:00am-4:30pm
After hours By Appointment 
Weekends By Appointment

Service Area

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