Premium Window & Door Replacement
Enhance Your Home.
Improve Your View.
High-quality, energy-efficient windows and doors with expert installation and honest local service.
Free Estimates
Quality Products
Professional Installation
Locally Owned
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WINDOWREPLACEMENT
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ENTRYDOORS
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SLIDING PATIODOORS
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STORMDOORS
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NEW CONSTRUCTIONWINDOWS
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TRIM & FINISHWORK
Real Results
Recent Window Work
Real installation photos from Perotti Door & Window projects. Clean lines, quality products, and professional workmanship.
Why Homeowners Choose Us
Local Service. Quality Work.
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Quality Products
Dependable windows and doors selected for long-term performance.
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Expert Installation
Careful installation, clean job sites, and attention to every detail.
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Energy Efficient
Improve comfort, reduce drafts, and upgrade your home's appearance.
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Local & Trusted
Serving O'Fallon and nearby communities with honest, responsive service.
Free, No-Obligation Estimate
Tell Us About Your Project
Send a few details and photos. We'll review your project and contact you to discuss pricing and next steps.
Prefer to call?
(636) 344-0019