About Us

We have cultivated a dedicated team of highly professional individuals to work in our various departments, from sales and marketing to administration and field work.

An industry leader for the past 23 years, Duraseal has developed a high level of expertise, innovative technology and a broad list of services to address our customer needs in a consistent and professional manner, according to our company vision.

The core of our personnel has remained intact since the early 90’s.

Our excellent relationships with the engineering community, property managers and owners, manufacturers and suppliers, allow Duraseal to be a recognized leader in our field.

We take pride in our ability to collaborate with clients and partners to examine and diagnose every situation.

John Maher

Founder of Duraseal, John started his career in the sealants industry in 1976. In 1980, John started working for Guertin Bros Coatings and Sealants based in Winninpeg, Canada.

While at Guertin Bros, John received extensive training in the area of technical sales and over the next 9 years, he became the Western Canadian Territory Manager. He collaborated with OEM manufacturers, Window and Door manufacturers, Fleet companies, Architects, Engineers and the Oil and Gas industry. His territory grew to include Western Canada and the United States.

In 1989, John left Guertin Bros and started Duraseal. The nine years at Guertin Bros instilled in John a working knowledge of products and a discipline of professional business ethics that are the basis of Duraseal’s 23 years of success.

John’s current position at Duraseal is President and General Manager.


Daniel Nica

Born and raised in Europe, Daniel brings many years of experience to Duraseal.

A successful entrepreneur, Daniel has worked in various areas, from Germany’s post cold war booming construction industry, to the Northern Afghanistan oil fields.

In 1996, Daniel joined Duraseal and has been managing the Sealant and Specialty Projects ever since. Daniel became a Managing Partner in 2007.

His extensive experience is complemented by Canadian Construction Association Gold Seal Courses in Project Management and Construction Management.

Daniel’s current position at Duraseal is Vice-President and Division Manager.




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