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Window Replacement in Mokena, IL

Since 1986, Mokena homeowners have trusted Legacy for vinyl replacement windows — energy-efficient, low-maintenance, and backed by a lifetime warranty.

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​One-day installation, and our shop is right here in town.

Serving Mokena Since 1986

  • Stop Drafts

  • Maintenance-Free​​

  • Low-E & Argon Gas

A two-story suburban home in the Mokena area featuring newly installed, energy-efficient replacement windows with classic grid patterns.

Window Replacement from a Mokena Shop

Our shop is on 116th Avenue.  If something needs attention after the install, we're the same drive we were during it.

  • Measured, Not Estimated

We measure every opening ourselves before anything gets ordered. No subcontracted measuring, no reorders.

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  • Warranty Service That Shows Up

A lifetime warranty only matters if someone answers. We're twelve minutes from most Mokena addresses.

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  • Forty Years in the Same Town

We've installed windows for Mokena families since 1986, and we still work here.

Questions about cost or timing?

Window replacement FAQs →​

Full-Frame or Insert Replacement?

Most Mokena homes can take either one.  Which is right depends on the condition of the frame behind the window.

  • Insert Replacement

If the existing frame is sound, the new window fits inside it. Faster, cheaper, and no disturbed trim or siding.

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  • Full-Frame Replacement

When the frame is rotted or out of square, everything comes out to the rough opening and gets rebuilt.

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  • How We Decide

We check the frame before quoting. You get told which one your house needs and why.

Why Mokena Homeowners Choose Legacy

  • 40+ YEARS IN BUSINESS

Installing windows across Mokena and Will County since 1986.

  • 5-STAR GOOGLE RATING

Mokena homeowners consistently rate our window replacement five stars.

  • LIFETIME WARRANTY

Every window we install is backed for as long as you own the home.

  • NO SUBCONTRACTORS

Our own crews handle every install, start to finish.

Mokena Window Replacement Reviews

Our Mokena Window Installation Process

Get a Free Mokena Window Quote

Hear from Mokena homeowners who chose our window replacement.

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See Mokena window reviews →

  • REQUEST AN ESTIMATE

Tell us what's failing and we'll come look at it — no charge, no pressure.

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  • CUSTOMIZED MEASURING PROCESS

We measure every opening so each window is built to fit.

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  • SAME DAY COMPLETION

Most Mokena window jobs are finished in a single day.

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  • SPOTLESS FINAL CLEANUP

We haul out the old windows and leave the space clean.

Easy Financing for Exterior Upgrades

  • Affordable Payments​

  • Zero Money Down​

  • 0% Financing

Promotional graphic advertising Zero Money Down and 0% Financing for glass block installation and home exterior window replacement projects by Legacy Glass Block & Window Co. in the Chicagoland area.
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