Mark’s Windows & Doors

Mark is amazing. Very professional, works for perfection and is very efficient.

He makes sure he leaves no mess behind and the job is always 100% complete and to our satisfaction. We will continue to use him for all windows and doors that we need installed.

He recently installed a new sliding door to replace a DIY door that was done incorrectly 20 years ago.

We had booked him in the winter, but due to Covid19 there was a delay. During the delay Mark was always in contact with us on when he could get the install done and made sure we were comfortable with the time lines.

I will continue to recommend Mark to all my friends and family who need an install for windows and doors

We found Mark on Homestars. Could not be happier with the work Mark and his team did installing 3 new windows. I highly recommend Mark if you need your windows and/or doors replaced. We will be contacting him again for our patio door in a few months

Thanks Mark !!

Mark was referred to us by a family friend (he doesn't install in winter), and we were very impressed. Got 5 windows replaced and now getting a quote for the last 4 windows.

Mark did an amazing job of replacing our entrance doors and windows. He worked with us to find options that fit our limited budget and did an excellent job of installing them in a timely manner. He is very punctual, and always accessible. You call Mark, you get Mark...not an answering machine. We are very happy with him and we have no reservations in recommending him.

Windows work well.
Nice clean installation.
Nice guy to do business with.
No issues whatsoever.
Would contact him again in a heartbeat.
Came in at price agreed on at the time agreed to.
Dennis McAughey
St Catharines

My basement was poorly renovated and not even finished before the contractor took off!! I was in a pinch. I called Mark, and he came and not just finished the job, but completely re-installed the windows to meet proper basement safety standards. Now I know our windows will hold up through the fall rains and winter snow and cold. And I'm so relieved to know it was done right now!

We had Mark quote a bay window to replace an existing flat window. His quote was reasonable and we contracted him to install our new window. His installation was smooth and went as explained. All was very well installed and well cleaned up after.We were very pleased with the job, window and result and enjoy looking out of this window now.

I met Mark while shopping for a storm door and asked his advice. Mark was very knowledgeable so I asked for his business card. After researching the comments about his company I called and set up a quote. It has been a pleasure, he was courteous easy to talk to, very knowledgeable and on time. The job he did is first rate for sure, even taking the time to repair my neighbors door ( at no charge )what a great guy recommended by me for sure. Thanks again Mark and Will

We had Mark replace our front door & all our windows in our house 2 years ago...Mark was very personable & really takes pride in his work...we were so impressed by his work ethics and attention to detail he is currently installing a new back door along with all new inner doors (frames included)..We would highly recommend Marks Windows & Doors to do your installations..you will not be disappointed in the quality of the work he does...

Contacted Mark at a home show. He came to my house and gave me a good quote for the window replacement.
He and his assistant showed up on time and completed the project quickly and cleaned up when they were finished.
Both Mark and Will answered my questions patiently.
Mark takes great pride in his work therefore his workmanship is excellent.
Would recommend him to anyone for new windows.
Did a fantastic job.
Love my new windows.
Great work. Great service. Will definitely have work done by Mark again.