The Columbia companies have been designing and manufacturing Canada’s widest selection of skylights, solariums, curtainwall, structural silicone, and panelized systems. No company has a more complete line of products. Columbia is the industry leader in devising solutions to natural lighting challenges.Columbia purchased a 35,000 square foot building in Mississauga, Ontario where it is initially used to distribute skylights in Eastern Canada and United States, which may be converted into a full eastern manufacturing operation.