In 1962 Hermano Pereira immigrated from his native Portugal and found a job in a local wood window manufacturing plant. His passion for the window and door industry was born. After a long successful carrer with one of Canada’s leading window manufacturers Hermano opened Dundas Woodwindows in 1985. Since that time our family business has been proudly serving the GTA with a blend of knowledge, expertise and industry leading products.

“Build every window and door like you’re building it for yourself.”

~ Nelson Pereira

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Hermano Pereira


Semi-retired, you will find Herman in the shop most mornings. His current hobbies include fishing, spending time with the grand kids and he is always up for a good game of dominoes.

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Nelson Pereira

Vice President

Raised in the family business, Nelson has been in the Window and Door Industry since 1985. What started out as a part time job after school and on weekends has grown into a lifetime career and a solid reputation in the industry. Fluent in all aspects of the residential window and door market with a specialty in the historical/heritage wood window and door segment.


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Karen Raposo

Office Manager

Every business has that one person that “holds down the fort”… in here it’s Karen. In charge of many aspects of the business including scheduling she is the go to person for daily operations.


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Janet DeNobrega

Inside Sales

With a warm and friendly smile Janet will be sure to make your window and door purchase a pleasant and comfortable one. Her 20 plus years of experience allows her to smoothly guide you through the broad array of products we offer making sure your final decision is the right one.


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Anthony Duarte

Architectural Sales Representative


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Nigel Lobo

Architectural Sales Representative

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Stacie Berry

Service Manager