The Innisfil Windows and Doors Company You Can Depend On

Windows and doors play an important role in protecting your home from the elements. A well maintained home exterior also offers impressive curb appeal, and can play a role in increasing the value and eventual resale price of your home.


As residents of Innisfil, we know that you have a number of options when it comes to replacing your windows and doors. The task may seem daunting, but we want to let you know that we at Simpson Windows and Doors have made it our mission to make the process as easy and smooth as possible.

With more than 25 years of experience, we are your reliable source for the purchase and installation of energy efficient glass products from the most trusted and respected manufacturers in the industry.


We will work with you to choose the correct product and styles that will enhance your home, and meet your budget. Our services cover:

  • Window installations
  • Exterior door installations
  • Patio & garden doors
  • Eavestroughs & siding
  • Soffit & facia

A Look into Our Windows and Doors Process

Step 1: Evaluation of Current Windows and Doors

One of our highly-trained experts will come out to your home to help identify your needs. We will perform an inspection and discuss several options with you.

Step 2: No-Obligation Complimentary Service Quote

After inspecting your current windows and doors, we will provide you with a free service quote that outlines all of the discussed options and our recommendations for moving forward. We will work to create a quote that fits your needs and budget.

Step 3: Design and Selection Process

We work with the best manufacturers in the industry to offer you products with leading patented technology. All of our products are Energy Star rated, and we offer a number of different window and door types in many different materials, styles, and configurations. Our team is trained to assist you through the customized selection process.

Step 4: Replacing Your Windows and Doors

This is where the magic happens and we come in to perform your replacement service. Most of our projects are installed in just one day! Our crew will ensure that your installation is completed with the highest quality and safety standards.

Step 5: Removal of Garbage and Debris

Unlike other contractors that may leave behind dangerous and unwanted trash – our team is committed to leaving your home cleaner than we found it. Rest assured your property will be left clean.

Step 6: After-Service Quality Control

With 25+ years of experience, we are known for our service excellence. Our windows and doors are backed by a lifetime, non-prorated warranty– our commitment to quality and trust are second to none.

Past Projects Completed in Innisfil

Past Projects
Past Projects


Professional Job and Cleanup

"Well our job is all finished. I want to thank everyone for such a professional job and cleanup. Adam, Justin and Paul were amazing and finished the eavestroughing and window installation without a hitch. Thanks to Adam for pointing out that the colour we had chosen was not the best match. He ordered the better choice and it was here on the job before they actually needed it. Thank you for not letting me put up the WRONG colour Adam."

Brands We Carry

Dorplex Logo
Greenview Logo
Kaycan Logo

Simpson Windows and Doors has been operating in the Innisfil area for over 25 years and we’ve got you covered when it comes to your homes exterior. Speak to one of our professionals today.

Easy Payment Plan Options

Contact Us

Fill out our online form or call
today to get a quote of our services for
your next home project.