About Security Glass Block
For decades, Security Glass Block has helped homeowners, businesses, and contractors across the Milwaukee and Madison area with glass block solutions built for lasting performance. Today, we continue that tradition with quality products, expert installation, and service you can trust.
Who We Are
Security Glass Block serves homeowners, businesses, contractors, and builders throughout the Milwaukee and Madison area with high-quality glass block windows, walls, and shower solutions.
Today, the company is owned by Nick and Brianna Behselich, who continue to build on Security Glass Block’s longstanding reputation for quality workmanship, dependable service, and a strong commitment to customers and employees alike.
With decades of experience behind the brand, Security Glass Block combines proven craftsmanship with modern fabrication and installation methods to deliver products built for long-term performance. The company remains focused on doing things the right way, offering honest service, professional installation, and results customers can trust.
What Makes Us Different
What sets Security Glass Block apart is the way its glass block panels are fabricated and installed.
Instead of relying on traditional mortar joints, the company uses advanced fabrication technology to create panels that are stronger, cleaner, lighter weight, and better sealed against the elements. The instant glaze adhesive actually includes an antimicrobial component. This helps prevent mold and mildew from forming on the joints, which can be a common issue with traditional mortar joints in high-moisture areas.
That same commitment to quality carries through to installation. Security Glass Block does not cut corners, and its work is completed by experienced, courteous, fully insured employees, not subcontractors. Customers can feel confident they are getting a better-built product and a team that takes pride in doing the job right.
Our Process
Security Glass Block makes the process straightforward.
After the initial call or website inquiry, the Security Glass Block team gathers project details, confirms measurements, and works to provide a proposal quickly. Once the quote is approved, the next steps are simple: select your glass block style, choose an installation date, and let the team handle the rest.
From there, communication remains clear and the work stays on track. On installation day, the crew arrives ready to complete the project with professionalism, cleanliness, and attention to detail—delivering a finished result that looks great and is built to perform for years to come.
Our History
Security Glass Block was incorporated in March 1990 by Bill Wirth, who founded the company with the goal of providing Milwaukee-area homeowners and business owners the high-quality glass block products and dependable service they deserve.
Under Bill’s leadership, the company built a strong reputation by focusing on craftsmanship, customer satisfaction, and a willingness to keep improving its products and processes rather than relying on past success.
In October 2006, Jim and Lynn Coster purchased the company and continued building on that foundation. Then, on October 18, 2019, Nick and Brianna Behselich became the current owners after seeking a business that aligned with their professional goals and values. Today, they continue to lead Security Glass Block with a focus on quality products, strong service, team development, and ongoing improvement—carrying the company’s history forward while continuing to raise the standard for glass block solutions in the Milwaukee and Madison area.
“I highly recommend Security Glass Block Milwaukee as an incredible business and team. They took lots of time showing me the various custom options with superior customer service and the pricing was fair plus the service was very fast!”
Josh Matthews
Need Glass Block for Your Home or Jobsite?
We’d love to discuss your project, provide pricing, or schedule next steps.