Business Details
Trusted St. Louis Window & Door Replacement Experts
At Window World of St. Louis, we pride ourselves on delivering superior home improvement solutions through our high-quality replacement windows, doors, and vinyl siding. Our team of factory-trained, industry-certified technicians ensures precise installations that enhance energy efficiency, durability, and aesthetic appeal. Backed by a lifetime warranty and recognized accreditationsincluding EPA Lead-Safe certification, Energy Star certification, and the Good Housekeeping Sealwe serve Missouri and Illinois homeowners with personalized service and competitive pricing.Our commitment to excellence extends to free in-home estimates, professional installations, and a focus on customer satisfaction, making us the trusted choice for home remodeling projects in the St. Louis region.
Services
Replacement Windows
Double-Hung Windows
Sliding Windows
Casement Windows
Awning Windows
Garden Windows
Custom Windows
Entry Doors
Patio Doors
Vinyl Siding
Highlights and features
- Factory-trained technicians ensure precise, certified installations.
- Lifetime warranties cover all replacement windows and doors.
- Free in-home estimates and energy-saving consultations available.
- Energy-efficient products reduce utility bills and environmental impact.
- Serving St. Louis and surrounding areas with local expertise.
Associations and certifications
- EPA Lead-Safe
- Energy Star
- Good Housekeeping Seal
What people say
Fantastic job
Great prices
Expertly installed
Energy savings
Professional crew
Services
Replacement Windows
Our energy-efficient replacement windows exceed industry standards, offering styles like double-hung, sliding, and casement. Designed to reduce energy costs, these windows feature Low-E glass and argon gas insulation. Professional installation ensures durability and enhanced home aesthetics.
Entry Doors
Custom entry doors combine security and curb appeal with fiberglass construction and foam cores. Available in 24 colors and 20 glass styles, they include reinforced jambs and weatherstripping for energy efficiency. Backed by a lifetime warranty for long-term reliability.
Vinyl Siding
Vinyl siding options like the 6000 Series provide durability and energy savings with 1.5-inch foam insulation. Resistant to harsh weather, these products boost curb appeal while lowering utility bills. Professional installation ensures seamless protection for homes in Missouri and Illinois.
Patio Doors
Energy-efficient patio doors offer seamless indoor-outdoor living with triple-screw frames and Low-E glass. Features include adjustable wheels, steel bearings, and dual weatherstripping for smooth operation and thermal efficiency. Available in classic, contemporary, and French styles.
Custom Windows
Custom windows allow homeowners to create unique designs with geometric shapes and energy-efficient materials. Paired with professional installation, these windows enhance natural light and home character while maintaining durability against weather elements.
Questions
Are Window World windows energy-efficient?
Yes. Our windows feature Low-E glass, argon gas, and Intercept spacers to improve thermal efficiency and reduce energy bills.
How do I know if I need window replacement?
Signs include difficulty opening windows, drafts, condensation between panes, increased energy bills, and visible damage.
What financing options are available?
We offer 0% APR for up to 36 months with approved credit. Contact us for details on flexible payment plans.
Do products come with warranties?
All windows and doors include a limited lifetime warranty covering glass breakage, seal failure, and installation.
How long does installation take?
Most jobs complete in 4-8 weeks after measurements, with each window taking ~30 minutes to install.
Can I customize my windows and doors?
Yes. Choose from multiple styles, colors, and glass options to match your home's aesthetic and functional needs.
