Thermoplast has been making vinyl extrusions for Canadian window and door companies since 1966. So the company is full of people the industry knows well, perhaps none so well as Jean Marois, the vice-president of sales and engineering, who has been a fixture on technical committees and association boards for many years. Marois and the Thermoplast team started a new chapter this year when they bought the Laval, Que., plant from its previous owner, Energi, when Energi’s private equity owner divested its window manufacturing businesses. Now, Marois, together with his partners Michael McCullough and Martin Boulanger, are charting their own course. Marois joined the Conversation to tell us the story of how it started, how it’s going and where things are going to go from here.