About Mario's Windows and Doors

Mario immigrated from Austria in 1992 and in the same year started an apprenticeship as a licensed carpenter in the window/door and renovation industry. After several years as a journeyman in this field, Mario started the business in Barrie in Year 2000, approaching the business in the fashion of no compromises on quality. We believe in good-old-fashioned family values and you will find those in our working relationship as well – committed to your satisfaction. Today more than 85% of our business is repeat and referral customer (we love referrals!)

We'll Show You the Difference

  • Free in-home Estimates
  • All types of window and door replacements and renovations
  • Bay/bow Windows
  • New construction
  • Windows Entry-systems in Steel or Fiberglass or Wood
  • Patio Doors and Garden Doors
  • Customizing existing openings and creating new ones
  • Passionately driven European workmanship!​
  • Quality installed products for affordable prices


  • Fully licensed, bonded & insured
  • 20 years of window and door installation experience
  • A performance you will applaud for years to come
  • European craftsmanship​​​

We are a cut above the rest!

- Mario Lambert
Lifetime Warranty
Marios Windows and Doors Logo

Forget the Confusion, Get Expert Advice...

With our years of experience and access to a wide range of products, we’ll work with you to pick the best options for your budget, taste and house.