[Canadian Door Doctor - Home Canadian Door Doctor & Construction Co. Ltd is a family owned and operated business established in 1979, servicing the Niagara Region, Hamilton Region, and Haldimand Norfolk Region. Residential, commercial and industrial clients include repairs, replacement, and new installations of all doors, operators, dock seals, dock levelers, gates, hollow metal doors, frames, and hardware, fire doors and shutters. Preventative maintenance programs to keep your doors, gates, and loading dock systems operating at their best and as safe as possible. Safety is an extremely important aspect of the door and dock industry. We have 24 hour emergency service 365 days a year. ]