LbL windows are more than just elegant designs that accent the look and feel of your home. Each frame is built using unsurpassed thermal technical knowledge. Although fashioned by hand, we use highly advanced, computer-controlled equipment for unmatched precision. Learn more about the process of building an LbL custom window or door.

Technologies & Techniques

Exceptional results stem from exceptional methods. Learn about the latest technologies and techniques that contribute to homeowner satisfaction.

Testing

LbL does not offer any product that has not undergone rigorous stress testing. LbL windows and doors withstand extreme abuse during the testing process, so we know they’ll stay looking sharp in your home.

Building Process

We have continuously refined our building process over the past 45 years into what it is today. Our proven methods of creating perfect window and door products result in the highest levels of customer satisfaction.

Lifetime Guarantee

We know exactly what goes into making LbL windows and doors—our methods enable us to guarantee them with the utmost confidence.