Promax has completed thousands of contracts with home and business owners in the central Illinois area. Promax Construction is an independent and family owned company founded in 2000 by John Schilawski. While the company is evolved over the years, John Schilawski continues to run the company with his wife Sharon.

Promax Construction's home base is in Decatur, IL, but we provide services to the greater central Illinois community including Springfield, Champaign, Bloomington, IL and any location within a 65 mile radius of Decatur, IL.

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About

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Promax Construction serves the central Illinois area and beyond. Zion, Mattoon, and more! We combine quality workmanship, superior knowledge and low prices to provide you with service unmatched by our competitors. Work with us involve a carefully planned series of steps, centered around a schedule we stick to and daily communication.

Windows

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We have a full line of windows. If you have a particular window in mind, call Promax to measure, order and install the window. A window installed by Promax usually qualifies for a lifetime manufacture warranty. We do custom replacement windows. There are tons of options when it comes to windows. We offer free consultations at your location.

Kitchen & Bath Remodel

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Whether your looking to upgrade your kitchen/bathroom or restore a rental house, Promax Construction has specialists ready to tackle any project. Most interior projects require coordinating expensive carpenters, plumber, and electricians. Promax Construction is a general contractor with licensed professionals on staff.

Roofing

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Roofing is the flagship service of Promax Construction. Our company operates several experienced roofing crews with the sole focus on roofing. Our experienced applicators have seen it all and have the experience to tackle the toughest roofing projects. Promax Construction is a Certainteed Select Shingle Master which means our customers receive extended manufacturer warranties with Certainteed shingles.

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