Straightforward guidance from NTI Windows & Doors
Replacing windows and doors is a significant investment. At NTI Windows & Doors, we believe homeowners deserve clear explanations, realistic expectations, and honest answers — before making any decisions. This page is designed to explain the process, costs, and options in plain language, so you can move forward with confidence.
Window & Door Buying Guides
How do I choose the right windows for my home?
At NTI Windows & Doors, window selection is based on how each room functions, not a generic recommendation. Ventilation needs, natural light, privacy, exposure, and layout all play a role. During an in-home assessment, we review these factors room by room to determine what will work best for your home.
Double-pane vs triple-pane windows — is triple worth it?
In Southern Ontario, many NTI homeowners choose triple-pane windows for improved comfort, reduced drafts, and better noise control. While the upfront cost is higher, triple-pane windows are often selected for bedrooms, front-facing rooms, or homes exposed to wind and traffic.
Are vinyl windows durable in Canadian weather?
Yes. NTI installs high-quality vinyl windows engineered for Canadian conditions. Properly built and installed vinyl windows resist moisture, won’t rot or corrode, and maintain their performance over time.
What window styles work best for kitchens and bathrooms?
Kitchens and bathrooms typically benefit from windows that provide ventilation without sacrificing space. At NTI, awning and casement windows are commonly recommended because they seal tightly, operate smoothly, and perform well in high-moisture areas.
Pricing & Cost Factors
What affects the cost of window replacement?
Window replacement pricing at NTI Windows & Doors is influenced by window size, configuration, glass options, installation method, and the condition of the existing opening. Brick-to-brick installations, custom sizing, and specialty glass will affect cost more than standard retrofit installations.
Why do prices vary so much between window companies?
Pricing differences usually reflect differences in product construction, glass performance, installation standards, and warranty coverage. NTI focuses on proper installation, long-term performance, and reliable service rather than competing on lowest price alone.
What’s the difference between retrofit and brick-to-brick installation?
Retrofit installation replaces the window within the existing frame and is typically more cost-effective. Brick-to-brick installation removes the full frame down to the brick, allowing the opening to be rebuilt for improved performance, structure, and longevity.
Are energy-efficient windows worth the investment?
Most NTI homeowners prioritize comfort, consistency, and durability over short-term savings. Energy-efficient windows help reduce drafts, stabilize indoor temperatures, and improve day-to-day comfort throughout the home.
Installation Process & What to Expect
What happens on installation day?
On installation day, the NTI team protects your home, removes the existing windows or doors, installs the new units, insulates and seals each opening, and completes exterior finishing where required. Clean-up is included, and we review the completed work with you before leaving.
How long does window installation take?
Most NTI projects are completed within one to two days, depending on the number of windows and installation type. Timelines are confirmed in advance so expectations are clear.
Do I need to be home during installation?
We recommend being home at the start of the day so the plan can be reviewed and any final questions addressed. After that, many homeowners choose to come and go as needed.
Can windows be installed during winter?
Yes. NTI installs windows throughout the year, including winter months. Proper procedures are followed to protect the home and minimize heat loss during cold-weather installations.
Product Performance & Energy Efficiency
What do energy ratings actually mean?
Energy ratings reflect insulation value, air leakage, and overall window performance. NTI explains how these ratings translate to real-world comfort rather than relying on numbers alone.
How do new windows reduce drafts and cold spots?
Modern windows installed by NTI use advanced glass coatings, insulated frames, tight seals, and proper installation techniques to reduce air leakage and heat loss.
Do new windows help with outside noise?
Yes. Certain glass configurations can significantly reduce outside noise, which is especially beneficial for homes near busy streets or high-traffic areas.
Are security features built into modern windows?
NTI windows feature aNTI-Theft locking mechanisms, modern multi-point locking systems, reinforced frames, and optional Sound & Security Performance (SSP) glass to enhance security and reduce outside noise.
Warranty, Service & Long-Term Care
What does the NTI warranty cover?
NTI Windows & Doors provides comprehensive warranty coverage on both the product and installation. This ensures protection beyond installation day and supports long-term peace of mind.
Do windows require ongoing maintenance?
Vinyl windows require minimal maintenance. Occasional cleaning and basic hardware checks are generally all that’s required.
What happens if I need service years later?
NTI maintains detailed installation records so service can be handled efficiently, even years after the project is completed.
Local & Practical Information
Where does NTI provide service?
NTI Windows & Doors serves homeowners throughout Hamilton, Burlington, the Greater Toronto Area and most of Southern Ontario.
Do I need permits to replace windows?
Most standard window replacements do not require permits. If permits are necessary, guidance is provided as part of the process.
How far in advance should I book?
Booking earlier helps secure preferred installation dates, particularly during peak seasons. Realistic timelines are discussed during the consultation.
Can NTI match existing window styles?
Yes. NTI takes a detail-driven approach to matching existing window styles, proportions, and finishes so replacements integrate cleanly with your home while improving performance and comfort.
Still Have Questions?
Every home is different. If you’d like guidance specific to your space, our team is available to walk you through your options.
👉 Book a no-pressure in-home assessment with NTI Windows & Doors
Upgrading your windows and doors improves comfort, lowers energy bills, reduces outside noise, and protects your home from drafts, moisture, and air leaks. It also increases resale value and curb appeal, while making your home easier to heat, cool, and live in year-round.
You may need new windows or doors if you notice drafts, difficulty opening or closing them, condensation between panes, rotting or warping, or higher energy bills.
Replacement time varies based on how many windows and doors you’re replacing, the type, and the size of your home. Usually, it takes one to three days.
While it’s technically possible to do it yourself, unless you’re experienced and equipped, hiring a professional is the best way to ensure proper installation and avoid potential damage.
Most homeowners see meaningful reductions in heating and cooling costs because modern windows and doors dramatically reduce air leakage and heat loss — two of the biggest sources of wasted energy in a home.
For Southern Ontario, energy-efficient windows and doors with a high R-value are ideal. Popular choices include vinyl, fiberglass, and composite materials.
Windows and doors typically last between 15 to 25 years. Lifespan depends on climate, maintenance, and product quality.
Energy-efficient windows are identified by their Energy Star certification, low U-factor (heat loss), low air-leakage rating, and modern glass packages like double or triple-pane with Low-E coatings and argon gas.
Yes, we offer custom sizing and design options to fit your unique needs and preferences.
Noise control isn’t just about thicker glass — it’s about sealing, construction, and the right glazing. That’s why NTI offers STC-rated glass options designed specifically to block outside noise and improve indoor comfort.