services
serving Durham, Ontario Region
Need to replace your doors or windows?
Expert installation and replacement services
At Dowling & Sons Windows & Doors, we offer premium window and door solutions for homeowners, contractors, and businesses across the Durham Region and beyond. We specialize in high-quality installation, custom designs, and energy-efficient upgrades that enhance the value, security, and beauty of your property.
Window & Door Installation and Sales
Lower your heating and cooling costs by up to 10% with energy-efficient window and door replacements. Dowling & Sons provides expert window installation, door installation, and sales of top-quality products. Our services include installing new frames for a snug fit and maximum energy efficiency.
Custom Aluminum Work
We specialize in custom aluminum fabrication for garage doors, windows, enclosures, and more. Our aluminum products are tailored to your project needs, ensuring the perfect fit and long-lasting durability.
Shutters and Storefront Shutters
We offer a wide range of custom shutters in vinyl and aluminum options. From residential window shutters to storefront shutters designed for businesses, we can help you select the right style for your property.
Glass Repair – Broken or Cracked Windowpanes
We offer professional glass repair services for broken or cracked windowpanes in both residential and commercial properties. Whether it’s a single-pane or insulated glass unit, our team can quickly replace damaged glass to restore visibility, improve energy efficiency, and keep your space safe and secure.
Door Repair — Residential & Commercial
We specialize in professional door repair services, including fixing sagging doors, misaligned frames, and worn hardware. Our team restores smooth operation, security, and appearance, extending the life of your existing doors. Let us help you avoid the cost of full replacement with expert door repairs you can trust.
Weather Stripping for Windows and Doors
We provide professional weather stripping services to improve the energy efficiency of your windows and doors. Our expert installation helps seal gaps, reduce drafts, and lower heating and cooling costs while enhancing comfort and performance year-round.
Siliconing Services — Residential & Commercial
Our team provides professional siliconing services for residential and commercial windows and doors. We carefully color-match sealants and use only high-quality products for a clean, long-lasting finish.
Patio Doors
We supply and install patio doors in custom sizes, including options like Imperial Patio Doors with mini blinds built-in. Our patio doors are designed for style, security, and energy efficiency.
Storm Doors
We offer professional storm door installation to enhance the protection, energy efficiency, and curb appeal of your entryways. Our expertly fitted storm doors help shield your home from harsh weather, reduce drafts, and improve insulation—providing added security and comfort throughout the year.
Garden Doors
Our garden door systems are available in various styles, including center swing, double operator, and three-panel systems. We help you select garden doors that blend beautifully with your home’s architecture while improving access and light.
Windows — Custom Styles & Finishes
Choose from a wide range of custom window styles, including fixed, casement, single or double slider, side sliders, single or double hung, bay, and bow windows. We offer many custom glass textures, privacy options, and color finishes to match your design needs.
Doors — Custom Entry Systems
We provide high-quality entry doors in a variety of styles and finishes to enhance curb appeal and security. While we carry fiberglass doors in stock, we do not install them — contact us for details on options and brochures.
repairing sagged, doors
Repair services for sagging doors to restore proper alignment, smooth operation, and secure closure. Whether your door is dragging, sticking, or misaligned, our team will adjust, reinforce, and repair it to improve function, extend its lifespan, and enhance your home’s overall comfort and security.
Contact us
Need Windows or Doors?
Call To Ask Any Question
1-289-988-1635