CSN Collision Continues Network Expansion With L’Atelier St-Ambroise

Collision announces the addition of L’Atelier St-Ambroise to its network, effective January 1, 2026. Owner Stéphane Dumas has recently launched this new business dedicated to collision repair and high-quality customer service.

Stéphane Dumas is driven by a passion for a trade that is constantly evolving. “Collision repair is a field where you never stop learning, and that’s what makes the work so stimulating,” he explains.

The decision to join the CSN Collision network was guided by a desire for flexibility and collaboration. “CSN demonstrates a strong openness toward its network, and that approach aligns with the vision I have for my shop,” says Mr. Dumas.

From the outset, the shop has placed strong emphasis on repair quality, an essential element in building a solid reputation and fostering customer loyalty. Each customer is welcomed with a personalized approach designed to instill confidence and provide a turnkey service from start to finish.

“Our goal is for customer satisfaction to make our shop a trusted reference,” he adds 

By joining the CSN Collision network, L’Atelier St-Ambroise aims to build on shared values of consistency, discipline, and quality while continuing its growth within a nationally recognized network.