The Best Window Installers in Leslie, MO

Compare the highest-rated windows professionals in Leslie, Missouri. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Thompson Creek Window Company

4.8
(1 reviews)
Verified

A leading regional window company known for high-quality, energy-efficient replacement windows. They offer a direct-to-homeowner model, professional installation crews, and strong warranties. Their reputation is built on durability and customer service.

(Corporate Office - serves Leslie from the St. Louis region) 1455 Woodstone Dr, St. Charles, MO 63304

Specialties & Features

Energy-efficient windows
Full window replacement
Custom window solutions

Business Information

Years in Business:40 years
Licensed:Yes
Insured:Yes
#2

Osborn Brothers, Inc.

4.7
(150 reviews)
Verified

A well-established, local family-owned contractor with an excellent reputation in Franklin County for high-end remodeling and window installation. They are known for their craftsmanship, attention to detail, and personalized service.

8 W Main St, Union, MO 63084 (Approx. 10 miles from Leslie)

Specialties & Features

Custom window solutions
New construction installation
Residential window replacement

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#3

The Window Man Inc.

4.6
(80 reviews)
Verified

A specialized window and door company serving the greater Franklin County area. They focus exclusively on windows and doors, providing expert consultation, a wide selection of products, and professional installation services for both repair and full replacement projects.

5 W Locust St, Union, MO 63084 (Approx. 10 miles from Leslie)

Specialties & Features

Window repair services
Residential window replacement
Storm and security windows

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes

Why These Are the Top Windows Contractors in Leslie

** The window service market for residents of Leslie, MO, is characterized by a blend of highly-regarded local contractors and larger regional companies based in the St. Louis metropolitan area. Due to Leslie's small size, there are no dedicated window providers within the village limits itself. The competition is concentrated in nearby Union, the Franklin County seat, which acts as the primary commercial hub for the area. **Quality and Competition:** The market is moderately competitive with a strong emphasis on reputation and longevity. Companies like Osborn Brothers and The Window Man have built their businesses on decades of local trust and word-of-mouth referrals. The quality of service is generally high, with providers offering a range of products from standard vinyl replacements to more premium, custom-built wood and energy-efficient models. **Typical Pricing:** Pricing is in line with regional averages. A standard full-window replacement project for a typical home can range from **$5,000 to $15,000+,** heavily dependent on the number of windows, the quality of the materials (e.g., standard double-hung vs. triple-pane, gas-filled, custom shapes), and the complexity of the installation. Homeowners in this semi-rural market tend to value durability and energy efficiency, making mid-range to premium products a common choice.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Leslie regulations and climate

Frequently Asked Questions About Windows in Leslie

Get answers to common questions about windows services in Leslie, Missouri.

1What is the typical cost range for a full-home window replacement in Leslie, MO?

For a standard-sized home in Leslie, a full window replacement typically ranges from $5,000 to $15,000, depending on the number of windows, materials (vinyl, wood, composite), and glass options. Missouri's material and labor costs are generally moderate, but prices can be influenced by specific energy-efficient features crucial for handling our local climate swings from hot, humid summers to cold winters. Always get itemized quotes from local installers to compare.

2How does the Missouri climate impact the type of windows I should choose?

Leslie experiences a full range of seasons with high humidity, summer heat, and winter cold snaps, making energy efficiency a top priority. We recommend windows with a low U-factor and Low-E glass to insulate against temperature extremes and argon gas fills to reduce heat transfer. Proper installation to prevent air and moisture infiltration is also critical to combat local humidity and prevent mold or wood rot.

3Are there specific permits or regulations for window installation in Franklin County or Leslie, MO?

In most residential cases within Leslie and Franklin County, a simple building permit is not required for window replacements that are like-for-like in size and do not alter the structural framing. However, if you are changing the window opening size or style, or if your home is in a historic district, you must check with the Franklin County Building Department. A reputable local installer will handle this research and process for you.

4What is the best time of year to schedule window installation in this area?

While installation can be done year-round, the ideal windows in the Leslie area are late spring (April-May) and early fall (September-October). These periods typically offer mild, dry weather, which is safer for installers and prevents issues like sealant not curing properly in extreme cold or heat. Scheduling during these shoulder seasons also avoids the busy summer rush and potential winter weather delays.

5How can I verify a window installation company is reputable and licensed in Missouri?

Always choose a contractor licensed in the State of Missouri; you can verify their status online through the Missouri Division of Professional Registration. For local peace of mind, seek companies with strong, verifiable references in the Franklin County area and proof of liability and workers' compensation insurance. A trustworthy Leslie-area installer will also provide a detailed, written warranty covering both the product and their labor.