Windows & Doors Installation & Service in Oshawa, Ontario

"I wanted to replace my front doors as it was getting old and the door jamb was kind of broken. I already worked with..."

"New look Windows and door installed exterior door on upper floor that exits to a deck. Price reasonable and time..."

"FRENCH DOORS French Doors for back deck: All went well from start to finish. Price very reasonable Doors arrived..."

"I was not sure who I should hire, and one of my friends suggested Optima, as they worked at his home. As he said they..."

"We're thrilled with our new bathroom and were very pleased with the whole reno process. We opted to purchase our own..."

"Barry and his team are AMAZING! This is the second time Ive used What a Pane and as always their products and..."

"Quality doExcellent service, prompt installation, and a high-quality door. Very satisfied with the entire..."

"We had a great experience with Dmitry and Ross! The windows went in on time- they were helpful and we were happy with..."

"Patio doors- From Mitch our sales rep, to Hope our contact to the two gentlemen who came to do the follow-up with..."

"Earlier this year in Feb we had all our 13 windows and a patio door replaced by WindowTech. The job done by them is..."