KPro is a Pella Certified Contractor. Awning, bay, casement, double-hung, egress, energy-efficient, sliding — the full Pella line plus alternative manufacturers.
Every window services project KPro takes on starts with a free 24-hour drone inspection. We document everything before we touch a single shingle, fastener, or membrane — and you get those photos and the written assessment whether you proceed or not.
Our St. Louis customers have been telling us the same thing for 6 years strong: the difference is in the details. Three magnet sweeps for nails. Final drone inspection before sign-off. Two rounds of rain test for any roofing work. Owner on-site for every insurance adjuster meeting.
From Manchester to Chesterfield, Wildwood to Ballwin, Kirkwood to Town & Country — KPro has installed, repaired, and maintained window services across every St. Louis suburb. Family-owned since 2020. 4.9 stars on 160+ verified reviews.
Most homeowners replace once a generation. Here's what we install across St. Louis.
Double-hung. Both sashes operate. Easy to clean. Most-requested style.
Casement. Crank-out, full opening. Great over kitchen sinks and tight spots.
Awning. Hinged at the top, opens outward. Lets you keep windows open in light rain.
Bay & bow. Architectural feature windows projecting from the home.
Sliding. Horizontal slide. Common in patios and modern designs.
Egress. Code-required for finished basements.
Energy-efficient packages. Low-E glass, argon-filled, ENERGY STAR rated.
On-site within 24 hours. Drone aerial photos, ground walkthrough, written assessment. Free even if you don't proceed.
Itemized: materials, labor, warranty terms. No surprises, no hidden fees.
Materials delivered the morning of. Crew on-site at 7am. Most residential jobs finish in one day.
Three magnet sweeps for nails, final inspection together, you sign off. Manufacturer + KPro labor warranty on file.
KPro provides window services services throughout the St. Louis metropolitan area and surrounding Missouri suburbs, plus Quincy, IL.
Common questions about window services in the St. Louis area. Don't see yours? Call (636) 386-7499.
3–5 weeks from order. Custom sizes occasionally longer.
Replacing single-pane or 30-year-old double-pane: yes, typically 10–25% on heating/cooling.
All excellent. Pella is our certified line — best service relationship and pricing. We'll install whichever you choose.
Yes — we pull permits, cut to spec, install per code, pass inspection.
KPro provides window services across the entire St. Louis metropolitan area including Manchester, Chesterfield, Wildwood, Ballwin, Kirkwood, Town & Country, Ellisville, Creve Coeur, Webster Groves, Wentzville, O'Fallon, St. Peters, Festus, and more — plus Quincy, IL on the Illinois side. Call (636) 386-7499 to confirm we serve your specific zip code.
Same-week scheduling for all standard estimates. Same-day response for active leaks or storm damage. We provide a written, itemized estimate within 24 hours of the on-site inspection.
No obligation. Real St. Louis roofers since 2020. Bilingual crew. Owner on every claim.
