Business Details
50+ Years
experience
Your Trusted Building Materials Supplier in Sandusky
Koch Building Products has been a trusted provider of quality building materials and services since 1952. Founded by Gene Koch, our family-owned business has served residential and commercial customers for over seven decades. We specialize in windows, doors, aluminum products, and custom building solutions tailored to meet diverse project needs. Our team of experienced professionals handles installations directly, ensuring consistent quality and customer satisfaction. With a dedicated showroom in Sandusky, Ohio, we offer personalized service and competitive pricing for contractors and DIY customers alike. Our commitment to excellence remains unchanged despite evolving industry trends.We pride ourselves on maintaining strong relationships with local manufacturers like ProVia while expanding our product range to include innovative solutions such as retractable awnings and energy-efficient sunrooms. Our commercial division has supported major building projects since 1989, delivering reliable materials and expert installation services. Customer trust is built through transparent communication, precise execution, and a focus on long-term value. As a third-generation family business, we continue to uphold the standards established by our founder while adapting to modern construction demands.
Services
Residential Products
Commercial Products
Window & Door Repair
Custom Aluminum Products
Screen Rooms
Details
- Year established: 1952
Highlights and features
- 70+ years of experience in building product solutions
- Third-generation family-owned and operated business
- Free in-home estimates for residential projects
- Direct installation by trained company employees
- Dedicated showroom with product displays available
Services
Residential Products
We provide premium residential building products including custom windows, doors, aluminum railing systems, and outdoor living solutions. Our offerings feature ProVia windows and doors with extensive warranties. TEMO insulated roofs and pergolas offer durable, low-maintenance options for patios. Screen rooms and sunrooms create bug-free outdoor spaces. All products combine functionality with aesthetic appeal for homeowners seeking quality improvements.
Commercial Products
Our commercial division supplies and installs building materials for large-scale projects. We offer hollow metal doors, wood doors, bathroom partitions, and accessibility-compliant fixtures. Custom aluminum awnings and pergolas enhance commercial properties. Screenrooms and windbreaks provide functional outdoor spaces. Our installation team handles projects of all sizes with professional execution. We partner with major manufacturers to deliver reliable, code-compliant solutions for businesses and institutions.
Window & Door Repair
We offer comprehensive repair services for windows and doors including screen replacement, hardware repairs, and custom component fabrication. Our technicians handle tilt key replacements, slide bolt repairs, and screen insert creation. While we don't repair glass, we provide replacement solutions. We service both residential and commercial clients with prompt, cost-effective maintenance options to extend the lifespan of existing installations.
Custom Aluminum Products
Our custom aluminum fabrication includes made-to-order components for unique projects. We create custom brake materials, gutter systems, and trim pieces. Aluminum railing systems meet federal safety standards while offering decorative options. We produce both residential and commercial-grade products with corrosion-resistant materials. Our fabrication capabilities support both functional and aesthetic requirements for specialized construction needs.
Screen Rooms
We design and install screen rooms that transform outdoor spaces into usable areas. Our systems keep out insects while allowing airflow and natural light. Custom configurations accommodate decks, patios, and other outdoor structures. We use durable materials that withstand seasonal changes. Screen rooms provide practical solutions for homeowners seeking comfortable outdoor living spaces without seasonal limitations.
People
Jill Hartley
Vice President
Third-generation leader with extensive experience in building products and family business operations. Oversees daily operations and customer relations while maintaining quality standards established by the company's founders.
Randy Koch
Owner
Second-generation owner with decades of industry experience. Maintains the company's commitment to quality products and service while guiding business strategy and growth initiatives for residential and commercial markets.
Questions
What products do you offer for residential customers?
We offer windows, doors, aluminum railing systems, screen rooms, sunrooms, and outdoor living solutions with free in-home estimates and professional installation services.
Do you provide commercial building solutions?
Yes, we supply and install commercial products including hollow metal doors, bathroom partitions, custom awnings, and accessibility-compliant fixtures since 1989.
Are your installers company employees?
All installations are performed by our trained company employees - we do not use subcontractors for any of our residential or commercial projects.
What repair services do you offer?
We repair window screens, replace tilt keys and slide bolts, fabricate custom components, and provide gutter services. We do not repair broken glass but offer replacement solutions.
What are your business hours?
Our showroom is open Monday-Friday 7:30am-4:00pm. Appointments outside regular hours are available upon request. We are closed weekends and major holidays.
Do you have a physical location to visit?
Yes, our showroom at 1615 East Perkins Avenue in Sandusky, Ohio features product displays and allows direct consultation with our building product specialists.
Reviews (4)
Ann DePuy
Jul 25, 2021
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Completely satisfied with the beautiful new doors installed at the house. The crew did a great job from start to finish, including clean up. Will be calling again for more doors.
Robin Goretzki
Jul 05, 2021
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Stopped in to inquire about purchasing products for multiple jobs over a week ago and still no response! Have continued to do business with a competitor! If you want to get my business you need to be on top of things! Very poor customer service!
Liz Bollini
May 15, 2020
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Koch replaced/installed all the windows in our home. Our windows were old and very drafty. These new windows are amazing and look great. Love the built in screens as well! Very affordable, installed in one day and great to work with!
Brenda Kammer
Dec 31, 2017
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Not a reputable company. They repaired a window (they sold & installed 9 years earlier) by covering up this mold with new molding. Certainly not the correct repair by any means. I would suggest you find another window company.
