First Class Windows, Doors and Siding specializes in the sale and installation of residential replacement:
We sell and install within the greater southwestern Ontario region which encompass the following major cities: London, St. Thomas, Woodstock, Tillsonburg, Sarnia, Strathroy, Exeter and Grand Bend.
Our company philosophy is to only offer homeowners Canadian made products that provide the best return on investment in energy performance, quality, selection, warranty and price. These well established and trusted companies are also leaders in product innovation by continually utilizing and adapting new technologies and design improvements to build the most energy efficient and maintenance free products. These companies include Vinylbilt Windows, Dorplex and MDL Door Systems, Royal Building Products, Mitten Vinyl and Gentek Building Products.