Window Installation & Replacement in Kitchener-Waterloo
D&D Exterior Finishing installs and replaces windows throughout Waterloo Region. Whether you're upgrading aging windows for energy efficiency, replacing a failed seal, or adding new openings, our licensed team delivers a proper, airtight installation every time.
Why New Windows Matter in Ontario
Drafty, outdated windows are one of the biggest sources of heat loss in Ontario homes. With our heating season running from October through April, inefficient windows can add hundreds of dollars to your annual energy bills. Modern high-performance windows with low-E coatings and argon gas fill dramatically reduce heat transfer — and they eliminate condensation, drafts, and UV fading of your furniture and floors.
Types of Windows We Install
Hinged on one side and opened with a crank, casement windows provide a full unobstructed view and an excellent air seal when closed. They're one of the most energy-efficient window styles available — ideal for kitchens and living rooms where maximum ventilation and a tight seal matter.
A classic choice for Ontario homes, double-hung windows feature two sashes that slide vertically. Both sashes tilt inward for easy cleaning — making them popular for upper-floor bedrooms and bathrooms. Available in a wide variety of sizes and finishes.
Bay and bow windows project outward from the home's exterior, creating a dramatic focal point and expanding interior space. They flood rooms with natural light from multiple angles and add significant curb appeal — popular for living rooms and dining rooms.
Ontario Building Code requires egress windows in all basement bedrooms — a minimum opening size that allows occupant escape in an emergency. We cut new openings, pour window wells, and install code-compliant egress windows that make your basement legal, safe, and bright.
Our Window Installation Process
- Measure & Assess — We measure every opening precisely and inspect the existing frame for rot, air leakage, and structural integrity. Custom-sized windows are ordered to ensure a perfect fit.
- Frame Preparation — Old windows are carefully removed. The rough opening is inspected and repaired as needed — any rot, damaged framing, or inadequate flashing is corrected before new windows are set.
- Window Setting & Shimming — New windows are set plumb, level, and square, shimmed to exact tolerances, and fastened to the framing per manufacturer specifications and Ontario Building Code.
- Sealing, Insulation & Capping — Foam insulation is installed around the frame, interior and exterior are caulked, and aluminum capping is applied to the exterior trim for a clean, weatherproof finish.
Why Waterloo Region Homeowners Trust Us
- ✓ Custom-Sized Orders — We measure each opening and order windows to fit — no gaps, no filler strips, no compromised performance.
- ✓ Energy Star Certified Products — We install Energy Star rated windows suited to Canada's Zone 2 climate — maximizing your energy savings and potential rebate eligibility.
- ✓ Egress Code Expertise — We know Ontario Building Code egress requirements inside and out. If you're finishing a basement, we ensure your windows meet every requirement.
- ✓ Complete Interior & Exterior Finish — Every window install is finished inside and out to a professional standard. No exposed framing or raw caulk lines.
Free estimates — licensed, insured, manufacturer-certified.
Frequently Asked Questions About Windows
How much does window replacement cost in Kitchener-Waterloo?
Window replacement costs vary by window type, size, and the number of openings. D&D Exterior Finishing provides free, detailed written estimates. Contact us for an accurate quote tailored to your home.
Is D&D Exterior Finishing licensed and insured for window installation?
Yes. We are fully licensed and insured for all window work in Ontario, WSIB compliant, and trained to Ontario Building Code standards.
Do you offer a warranty on window installations?
Yes. All window installations include our workmanship warranty plus the manufacturer's product warranty. Details are provided in writing before work begins.
How long does window replacement take?
Most window replacement projects are completed in one day. A whole-home replacement may take two days. Egress window installations involving concrete cutting typically take one to two days.
Do you serve my area for window installation?
We install windows in Kitchener, Waterloo, Cambridge, Guelph, Elmira, Ayr, New Hamburg, Baden, Woodstock, Brantford, Breslau, and surrounding communities.
What is a low-E coating and do I need it in Ontario?
Low-E (low emissivity) coatings are microscopic metallic layers applied to the glass surface that reflect infrared heat while allowing visible light through. In Ontario's cold climate, low-E glass significantly reduces heat loss in winter and solar heat gain in summer — we recommend it on every window we install.
Can I add a window to a wall that doesn't currently have one?
Yes. We can cut new window openings in most exterior walls — including the structural header work required to support the load above. We assess the wall framing during the estimate and handle all rough carpentry, window installation, and exterior finishing.
Service Areas for Window Installation
We install and replace windows throughout Waterloo Region: Kitchener, Waterloo, Cambridge, Guelph, Elmira, Fergus, Elora, Ayr, New Hamburg, Baden, Woodstock, Brantford, Breslau, St. Jacobs, and more.