THEBCO Windows, Doors & Siding
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About THEBCO Windows, Doors & Siding
THEBCO Windows, Doors & Siding holds a 4.9-star rating across 704 Google reviews, making it one of the most highly reviewed window and door contractors in Madison, Wisconsin. Operating from a showroom on the city's east side, the company serves residential and commercial customers throughout the Madison metro area, including nearby communities. Founded in 1976, THEBCO has built its reputation on replacement windows, entry and patio door installation, and exterior cladding services, maintaining an A+ rating with the Better Business Bureau. The company employs in-house installation teams rather than subcontractors, and every door unit is manufactured in Wisconsin.
What distinguishes THEBCO is its focus on American-made products and a lifetime warranty on both materials and workmanship. The company installs Restorations Windows from the Sunrise Collection, which feature FiberCore frames and are designed for energy efficiency in Wisconsin's variable climate. Door products come from Waudena, a Wisconsin-based manufacturer, and siding options include Mastic vinyl and Ascend composite cladding. THEBCO offers a customer referral program that rewards clients with a $100 check for each verified recommendation that leads to a sale, reflecting the company's emphasis on repeat business and word-of-mouth growth.
Reviewers who left detailed feedback consistently mention specific team members by name. Adam Gehrke wrote that installers Jason and Kyle returned for multiple projects over two seasons, handling eight window openings and two exterior doors, and that Dave Speer helped him select awning-style windows for better scenic views. David Wilie rated his experience five stars, calling installers Eric and Jeremy "fantastic" and noting they completed the job on time despite weather delays. A single one-star review from January 2026 describes a warranty replacement delay for a cracked window, with the reviewer noting that production staff was responsive to calls but the manufacturer delay extended several months.
What Customers Say
Nearly all 704 reviews award five stars, with customers praising specific technicians Jason, Kyle, Eric, and Jeremy by name. Positive feedback consistently mentions energy-efficient windows, on-time installation, and the referral program. One recent review cites a manufacturing delay on a warranty replacement.
Working Hours
| SundayToday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Services
Window Replacement
Full-service replacement of double-hung, sliding, casement, awning, bay and bow, and picture windows with energy-efficient options.
Entry Door Installation
Professional installation of Waudena entry door systems made with American-made components and Wisconsin manufacturing.
Patio Door Installation
Installation of sliding and hinged patio doors designed for durability and aesthetic appeal.
Storm Door Installation
Addition of storm doors for extra protection and energy efficiency on exterior entry points.
Siding Installation
Installation of Mastic vinyl siding and Ascend composite cladding for low-maintenance exterior updates.
Roofing Replacement
Full roofing replacement services for residential and commercial properties in the Madison area.
Customer Referral Program
$100 reward for each verified customer referral that results in a completed purchase.
Financing Options
Flexible financing plans available to help homeowners manage replacement project costs.