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      Great Northern Home Exteriors Inc.

      1 St. Paul Street 601-suite 18, St. Catharines, ON L2R 7L4

      Hours of Operation

      • Monday
        9:00 am - 8:00 pm
      • Tuesday
        9:00 am - 8:00 pm
      • Wednesday
        9:00 am - 8:00 pm
      • Thursday
        9:00 am - 8:00 pm
      • Friday
        9:00 am - 8:00 pm
      • Saturday
        9:00 am - 1:00 pm
      • Sunday

      Products, Services and Brands

      Replacement Windows, Steel Entry Doors, Vinyl Siding, Aluminum Eavestrough, Patio Doors

      Windows | Doors | Siding

      Great Northern is an industry leader in Window Replacement, Entry Door Replacement and Vinyl Siding Installation. We are also experts in Patio Door, and Storm Door replacement along with Eavestrough, Soffit and Fascia installation. With over two decades of experience, we specialize in top quality Installation and service. All of the products we carry come with the best warranties available in the

      Behind the Business