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Windows & Doors in St. Thomas, ON

St. Thomas is a historic railway city in Elgin County, known for its iconic Jumbo the Elephant monument and rich railroad heritage. The city features beautiful Victorian architecture along Talbot Street, established residential neighbourhoods from the railway boom era, and affordable housing that attracts families from the London region.

St. Thomas's Victorian-era railway homes and early 20th-century residential areas have many properties with original or early-generation windows. The city's exposed ridge-top location amplifies cold winter conditions, making energy-efficient triple-pane replacements particularly impactful for reducing heating costs and improving comfort.

Why Choose Panes for Your St. Thomas Home?

  • Factory-direct pricing — save 20-30% by buying directly from the manufacturer with no middleman markups.
  • 14-day production — custom windows and doors built to your exact specifications and delivered fast.
  • 25+ year warranty — industry-leading coverage on materials, glass, and craftsmanship for lasting peace of mind.
  • Free in-home estimates — a Panes specialist will measure, consult, and quote your project at no cost or obligation.

Window & Door Services in St. Thomas

Panes Windows & Doors provides a full range of window and door services to homeowners and builders in St. Thomas and the surrounding Greater Toronto Area area. We offer new construction windows for builders working on custom homes, townhomes, and multi-family developments. Homeowners looking to upgrade can choose from our premium replacement windows designed for quick, clean installation with minimal disruption. In addition to windows, we supply fiberglass and steel entry doors to boost curb appeal and security, as well as sliding and multi-track patio doors that bring natural light into your living spaces. All products are available supply-only for contractors or with full professional installation by our experienced crews.

Energy Efficiency for ON Climate

St. Thomas sits on a ridge above the Kettle Creek valley in Elgin County, where cold winter winds sweep across the flat southwestern Ontario landscape with temperatures often dropping below -20C. Our triple-pane and double-pane vinyl windows feature Low-E glass coatings, argon gas fills, and multi-chamber frames engineered to minimize heat transfer. This helps keep your St. Thomas home comfortable year-round while reducing heating and cooling costs. Energy-efficient windows can also qualify for local utility rebates and federal tax credits, putting money back in your pocket.

Contact Panes Windows & Doors at 905-267-1240 for a free, no-obligation quote in St. Thomas.

Our Products

  • Vinyl Windows
  • Entry Doors
  • Patio Doors

Window Types

  • Casement Windows
  • Double-Hung Windows
  • Single-Hung Windows
  • Bay Windows
  • Bow Windows
  • Picture Windows
  • High-Fix Windows
  • Single Slider Windows
  • Double Slider Windows
  • Awning Windows
  • Shaped Windows
  • Window Comparison Guide

Education Guides

  • Window Performance Lab
  • Window Type Matchmaker
  • Glass & Coatings Explorer
  • Door Security & Materials Guide
  • Smart Buyer's Pricing Guide
  • Window Condensation Guide

Nearby Service Areas

  • London, ON
  • Aylmer, ON
  • Tillsonburg, ON
  • Strathroy, ON

View All Service Areas

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