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The Glass Guru

Window Installers in O'Fallon, Missouri
Ranked #2 in O'Fallon | Grade A-
4.90 (196 reviews)

The Glass Guru

Local window and door glass services for homes and small businesses, including broken pane replacement, fogged insulated glass solutions, and sliding door glass work. Scheduling and installation are arranged once measurements and materials are confirmed Serving homeowners across O'Fallon, Missouri.

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Why Homeowners Choose This Business

Customers cite responsive communication, courteous technicians, and efficient scheduling from assessment to completion. Projects are typically coordinated with clear time estimates and minimal disruption Local experience that helps homeowners across O'Fallon, Missouri compare a more region-aware provider.

Service Area

O'Fallon, Missouri, Wentzville, and nearby St. Charles County communities.

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Listing details

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  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Maintains a competitive standing in this market.
  • Performs at or above the local average rating.
  • Has more review volume than many local competitors.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Renovation Services
  Installations
  Window Glass Replacement
  Insulated Glass Units
  Repairs
  Fogged Window Repair
  Broken Window Pane Repair
  Sliding Patio Door Glass
  Residential Window Repair
  Commercial Glass Replacement
  Window moisture removal
  Glass Measurement And Installation
  Bay and atrium window glass

Services commonly requested include insulated glass replacement for windows, repair of cracked or broken panes, sliding glass door glass replacement, and assessment of moisture/fogging issues in double-pane windows.

Reviews

Customer Reviews

al sedlacek
They were prompt and were able to fix our sliding glass door first time around. Went out of their way to get us on the schedule. They were all very courteous. Highly recommend them.
DeeAnn Burwitz
Prompt response and service from initial assessment of repairs needed (2 cracked/broken window panes), scheduling to completion of project, everyone was polite and professional. Great experience with excellent customer service and work. V…
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Prompt response and service from initial assessment of repairs needed (2 cracked/broken window panes), scheduling to completion of project, everyone was polite and professional. Great experience with excellent customer service and work. Very pleased and grateful for The Glass Guru’s service! Would definitely recommend them and wouldn’t hesitate to call on them again if the need occurs. Thank you!
Donald Hackmann (Don)
We had a broken window replaced in our dining room area and were very pleased with the Glass Guru's service. Greg gave us a quick quote and immediately ordered the replacement, stating it would take 4-6 weeks for it to arrive. When it came…
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We had a broken window replaced in our dining room area and were very pleased with the Glass Guru's service. Greg gave us a quick quote and immediately ordered the replacement, stating it would take 4-6 weeks for it to arrive. When it came in, Kevin contacted us and scheduled the repair for the next afternoon. The repair took less than a half-hour, and Kevin was helpful and professional throughout. We intend to use the Glass Guru for all of our future glass needs!
Michael Dannemann
They are very responsive, and very quick on delivery. Will use them every-time I have a need.
Karen Mead
The Glass Guru replaced the glass in our atrium and bedroom bay windows. They were professional, knowledgeable, trustworthy and did an amazing job at an honest cost. Would definitely recommend!!

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Special Offers

Free Estimate

This business may offer free estimates for some services.

Frequently Asked Questions

Most calls involve replacing cracked or broken panes and swapping out failed insulated glass units that appear foggy. The team also helps with glass in sliding patio doors and select specialty window configurations. They assess whether the full window needs replacement or if glass-only replacement is appropriate. Recommendations are provided after an on-site evaluation.

Lead times vary by size and glass type, but reviewers commonly report an initial assessment, followed by an order period, then quick scheduling once glass arrives. The installation itself is often completed in a single visit. Your estimator will outline the expected timing for your specific window.

In many cases, yes. If the window frame is in good condition, replacing only the insulated glass unit or pane can restore clarity and function. The technician will check frame condition, measurements, and any hardware concerns to confirm if glass-only replacement is suitable. You’ll receive options before work proceeds.

Yes, glass replacement for sliding patio doors is a common request noted in local feedback. The team assesses the door, confirms measurements, and orders the appropriate glass. Scheduling is coordinated once materials arrive, and installers aim to minimize downtime.

Call the office or submit a request through the location’s webpage to schedule an assessment. A technician will review the issue, take measurements, and provide a written estimate. If you choose to proceed, they will order materials and contact you to set the installation date.
 Verified Listing

Opening Hours

  • Monday 8:00 AM – 4:00 PM
  • Tuesday 8:00 AM – 4:00 PM
  • Wednesday 8:00 AM – 4:00 PM
  • Thursday 8:00 AM – 4:00 PM
  • Friday 8:00 AM – 4:00 PM
  • Saturday Closed
  • Sunday Closed

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Business Details

Business Rating
4.90 (196 reviews) Featured BusinessPro Listing
Address
2182 E Pitman Ave, Wentzville, MO 63385
Business Type
Window Installation Service
Website
https://www.theglassguru.com/locations/ofallon-mo/
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Window Installers in O'Fallon, Missouri

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