Serving La Salle, Peru and the entire Illinois valley area

300 2nd Street La Salle, IL

Koolmaster Co Inc | Il
Three season room Three season room

We've been serving the area since 1954. Trust our years of experience when you choose us for your next project.

Enjoyable Screen and Three Season Rooms

Make the most of your outdoor living space with a screen room or a three season room from Koolmaster Co Inc. Whether you're looking for an entirely new addition to be built over your existing deck or patio, or looking to enclose your deck or patio, we can enhance your outdoor space just as you always wanted it to be.


If you're looking for something more elaborate than a screened-in room, we can also work with you to build a stylish and functional three season room, complete with sliding windows, door, insulated wall, and ceiling. We use reliable products from Mason Corp. for maximum quality and economy for your budget.

When you deal with Koolmaster Co Inc, you deal directly with our owners. We take pride in offering you top-quality products and unbeatable customer service to ensure your total satisfaction.


In addition to applicable manufacturer warranties on the products we offer, we also give you our own warranty on our craftsmanship and workmanship.

Give us a call today for a FREE estimate.



Quality service for your project