Replacement Exterior Doors

Enhance your curb appeal and add value and comfort to your home with a custom designed entrance door system manufactured using insulated steel or wood grained fibreglass panels. French design swinging or sliding patio doors in two, three and four panels enhancing your view, enjoying the outdoors in complete comfort.

Founded in 1976, QSI is one of the Golden Horseshoe’s most reputable Exterior Door companies, with sales and installation teams working year round – remarkable given the harsh Southern Ontario winter weather.

QSI’s newly renovated 6,000 sq ft head office and showroom facility in Hamilton offers fully operational, full size exterior door displays. Customers are invited to experience the quality that is synonymous with our high performance product, installation and people.

All QSI exterior doors are ENERGY STAR approved, constructed with a performance package that is unrivaled in the industry! Contact QSI for all exterior door installtions, replacements and repairs in Burlington, Oakville, Hamilton, Grimsby and all surrounding areas.

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First impressions combining style and performance in both steel and fibreglass insulated entry systems.

French Swing Patio

Update or create your backyard entrance with a classic French Door look. Enhance your view with style and comfort.

French Sliding Patio

Sliding patio doors with a waider sash combines the look of a French style door with the space saving design of a sliding door.