Window Replacement & Exterior Services in Lemont, IL
Lemont is older than the towns around it.
The village grew up around the I&M Canal in the 1830s and the limestone quarries that followed. A lot of that housing stock is still standing, and a lot of it is on its second or third set of windows.
What We Install

Why Lemont Homes Need Different Attention
A small part of Lemont sits inside the Village's historic district, where exterior work needs Commission approval. We don't take that work, and we'll tell you on the phone if your address falls inside it.
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Walls That Aren't Square
Older wood-frame houses settle. Openings go out of plumb, and siding courses that were level in 1920 aren't level now. A crew that only works on newer subdivisions runs into this and improvises.
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Second-Generation Replacements
Many Lemont homes already had windows swapped once, often in the 1980s or 90s. What's failing now isn't the original wood — it's the replacement that went in over it. How that first job was done changes what we can do on the second.
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Masonry and Stone
Limestone was Lemont's industry, and it shows up in foundations and facades. Masonry openings get treated differently from wood-frame ones, and we confirm which we're dealing with when we measure.
Most Lemont Homes Need More Than One Thing
Older houses rarely fail one system at a time. When there's a budget and a sequence to figure out, here's how we usually approach it.
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Windows Before Siding
If both are on the list, windows go first. New siding gets cut and fitted around whatever's in the openings, so replacing windows afterward means disturbing work you just paid for. Doing it in that order also means the trim gets wrapped once, not twice.
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Siding and Trim as One Job
Soffit and fascia usually fail on the same timeline as the siding, because the same weather got to all of it. Pulling old siding exposes what's underneath, and that's the point where hidden problems show up. Handling it in one pass costs less than coming back.
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Doors and Basement Openings Last
Entry doors and basement glass block are self-contained — neither depends on what happens to the rest of the exterior. If the budget only stretches so far this year, these are the pieces that wait comfortably without creating a problem.
Why Homeowners Choose Legacy for Siding
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40+ YEARS IN BUSINESS
Family-owned and installing siding across Will, Cook, and DuPage counties since 1986.
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5-STAR GOOGLE RATING
Lemont homeowners consistently rate our work five stars.
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LIFETIME WARRANTY
Every installation is backed for as long as you own the home.
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NO SUBCONTRACTORS
Our own crews handle every install, start to finish.
Our Lemont Reviews
Our Lemont Installation Process
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REQUEST A QUOTE
We walk the house, measure the wall area, and give you a written range.
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ON-SITE MEASUREMENTS
Wall area, openings, and trim all get measured. That's what drives the number.
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INSTALLATION
Old siding comes off, the sheathing gets checked, new panels go on. Our own crews.
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FINAL WALKTHROUGH
We haul the debris away and walk the job with you before we leave.
Get a Free Quote in Lemont
We'll walk the house, measure every elevation, and give you a written range. No pressure, no obligation.
Or send us the details and we will get back to you.
Easy Financing for Exterior Upgrades
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Affordable Payments
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Zero Money Down
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No-Interest Financing Available
READY TO UPGRADE YOUR LEMONT EXTERIOR?


