A-1 Glass specializes in residential glass. It’s not just windows and doors, it’s your home. Foggy or broken thermo panes reduce the energy efficiency in your home, increasing your monthly heating or cooling costs. A-1 Glass can also repair those broken single glazed windows and storms. We can also replace torn and faded screen’s keeping the outdoors where it belongs.

We will come to your home and measure the glass to match the existing undamaged glass in your home, getting you back to the way the windows are designed to perform. We will only replace glass in conformance with both the federal, state and local building code.

Estimates are always free.

A-1 Glass is proud to be partnered with Security Boss™ in providing and installing their in the glass Pet Doors. These doors feature a unique spacer/adapter that allows for installation into glass, such as sliding glass doors as well as permanent glass variations. The In-the-Glass MaxSeal® features the same industry leading characteristics as found in the door and wall model versions. We will help you determine what size door is needed for your pet and provide you with a Free estimate.We can also provide and install the screen door version.

Please click the picture on the left to get more information on the doors as well as watch a video of the installation.


A-1 Glass takes pride in their commercial glass services, from new construction to retrofit applications. We have the experience to meet your needs.

We offer the following services:

*Picture shown of store front A-1 Glass did for Hom Furniture in Onalaska, WI.

*Picture shown of store front A-1 Glass did for Hom Furniture in Onalaska, WI.

  • Storefront fabrication and installation
  • Commercial windows
  • Aluminum door replacement
  • Aluminum door repair and hardware
  • Security framing and Glass
  • Security screens
  • All Glass Entrances
  • Glass replacement
  • Fire/safety glass
  • Tormax Automatic door operators
  • Partition framing and glass
  • Service windows

A-1 Glass adheres to all federal, state and local building codes and is fully licensed and insured.