Windows, Doors & Siding That Make Your Home Look Beautiful and Work Better
Serving St. Catharines, Niagara Falls, Grimsby, and the Greater Niagara Region for Over 50 Years
Get Your Free Estimate
Love the Look.
Feel the Difference.
Your home should reflect your pride and personality. With a foundation built on trust and craftsmanship, we guide you through each step, helping you choose windows, siding, and doors that enhance your home’s value, style, and energy efficiency. No guesswork. No pressure. Just honest advice and results you’ll love.
“We felt like we were in good hands from day one. They truly care about doing the right thing.”
— Cathy, St. Catharines
A Beautiful Home Starts Here
We know how stressful home renovations can be: unreliable contractors, long delays, and blown budgets. That’s why, for over 50 years, homeowners across Niagara have chosen Permanent Siding & Windows. We deliver high-performance windows, energy-efficient siding, and secure doors on time and on budget, with craftsmanship that speaks for itself.
RENOVATE
MEET
ENJOY
3-Step Renovation Plan
Our Proven
You get to relax and enjoy your more beautiful, more comfortable home.
Our expert team follows your custom plan with precision, delivering your new exterior on time and within budget.
We come to your home, take precise measurements, and walk you through design and material options.
Don’t Let Old Windows Drain Your Wallet
Up to 30% of heating and cooling is lost through outdated windows. With energy costs rising, replacing your windows is one of the smartest investments you can make.
We install the latest in energy-efficient window technology, saving you money and adding major curb appeal.
Get Your Free Estimate
“They showed up on time, walked us through everything, and followed through on their promises. I’d recommend them to anyone.”
— James & Leanne, Niagara Falls
Trusted Builders
Why Permanent Siding & Windows?
50 Years of
Quality Service
Over 10,000 Windows Installed
Thousands of
Happy Customers
Real Results. Real Homes.
You’re in Good Hands
I’m Darryl Unger, owner of Permanent Siding & Windows. This business started with my dad, Bill, over 50 years ago, and I’ve proudly continued the legacy of quality, honesty, and local service. We’re here to make your home better without stress, surprises, or high pressure sales.
Book A Meeting
Darryl Unger
Owner, Permanent Siding and Windows
“After a bad experience with another company, we were nervous. Darryl took the time to explain everything and never made us feel rushed. The crew was friendly, respectful, and cleaned up every day. We’re so glad we chose them.”
— Heather, Grimsby