Welcome to Harnois Industries

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Welcoming

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Experts

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Since 1965, Harnois Industries have been manufacturing professional greenhouses and the renowned MegaDome canvas buildings.

Harnois Greenhouses

Harnois Greenhouse offers more than just a greenhouse structure. Over the years, we've built turnkey greenhouse projects that grow fresh vegetables, new flower varieties and seedlings.

MegaDome Fabric Buildings

Whatever your industry, our membrane buildings are the solution to all your indoor storage expansion needs. More than 5,000 dome projects have been built worldwide.

Want to be part of the team?

Do you have ideas and like to see them realized? We offer quality jobs in a variety of fields to help you get there.