Midstate Spring Tite was founded by Tom Lee who began furnishing and installing windows in the Chicago area in 1985. Two years later, Midstate Spring Tite, Inc. was formed. Tom’s son, Eric, joined the business in 2000 and they have been working together ever since to help businesses with their window and door projects, whether new, renovation, retrofit or historic.


Midstate Spring Tite is made up of a team of skilled professionals with decades of experience who share a reputation of successful window projects in the Chicago and Northern Illinois area.


Midstate Spring Tite is known for their honesty, integrity and trust. They use core values such as teamwork, safety, respect, character, customer focus, transparency, leadership, dependability and others to uphold an honest and safe work environment.


The US Energy Independence and Security Act defines a high-performance building as one that “integrates and optimizes on a life cycle basis all major high-performance attributes, including energy conservation, environment, safety, security, durability, accessibility, cost-benefit, productivity, sustainability, functionality, and operational considerations.” Midstate uses this as a basis for deriving performance attributes appropriate to the arrangement and configuration of windows and doors on a building including aesthetics, cost-benefit, economic efficiency, human comfort and health, integration with other building systems, the user interface, and maintenance and renovation requirements over the operational phase of the building lifecycle.