Window Force has manufactured custom vinyl windows at its Concord, Ontario facility since 2007 — over 18 years of production experience in an 80,000 sq ft plant built specifically for custom uPVC fabrication.
With a deeper 4-9/16″ frame and a slimmer 2-7/8″ visible profile, the UltraSlim Series with hidden gasket delivers a sleek, modern look while maximizing glass area. It is designed for seamless integration into new construction and larger openings.
Explore the Ultraslim Series
A proven 3-1/4″ frame depth with a standard profile, the Classic Series is ideal for retrofit and replacement projects. It delivers excellent thermal performance, a familiar aesthetic, and reliable compatibility with a wide variety of installation conditions.
Explore the Classic SeriesThank you to Sergey, Anthony, and Jonathan — I know I can always rely on you.
Everything you need to know about the product and billing.
Yes. Every window produced at the Concord facility is built to the exact rough-opening dimensions submitted with the order. Window Force does not manufacture stock sizes or pre-built inventory for retail distribution. Each unit is cut, welded, and glazed to specification before shipment.
Yes. While Window Force operates primarily as a B2B manufacturer serving builders, dealers, and contractors, the company also accepts direct orders from homeowners. Contact the team for product selection, sizing guidance, and pricing. For projects that require installation, Window Force can connect buyers with authorized installation partners.
Frames and sashes are manufactured from lead-free uPVC (unplasticized polyvinyl chloride). All corners are fusion-welded for structural integrity and long-term weatherproofing. The spacer system is a dual-seal, metal-free warm-edge design that minimizes heat transfer at the glass perimeter and reduces the likelihood of edge condensation.
Standard windows are produced in fixed sizes and stocked by retailers for general use. Custom windows are manufactured to the exact dimensions of a specific opening, which eliminates shimming, adapted frames, and the performance gaps that come with approximate sizing. For replacement projects with non-standard openings, or new construction where design calls for specific proportions, custom manufacturing is the correct approach.
Pricing depends on size, profile series, glass configuration, colour selection, and order volume. Window Force supplies both individual homeowner orders and large builder volumes, with pricing structured to each project type. Contact the team directly for a project-specific quote.
Yes. Window Force holds ENERGY STAR Partner status and manufactures windows to meet the requirements of the Canadian ENERGY STAR program, which sets performance thresholds across climate zones. All windows also carry CSA certification and are rated to NAFS-11 structural and performance standards. For specific ER ratings, U-factor, and SHGC values, refer to the Ultraslim Series or Classic Series pages, or contact the team for specification sheets.
Yes. Windows are manufactured at the Concord, Ontario production facility and supplied to builders, dealers, and project sites across Canada. For projects outside Ontario, buyers work through the regional dealer and freight network. Regional contact information is listed on the provincial pages.
Window Force provides a 25-year transferable warranty. Coverage runs in three tiers: full 100% manufacturer coverage for years 1-25, 80% manufacturer coverage (20% customer responsibility) for years 25-30, and 25% manufacturer coverage (75% customer responsibility) after 30 years. The insulated glass unit carries a separate 10-year non-prorated sub-warranty. The warranty transfers to subsequent owners when the property is sold.






