Al Johnson: What to know about asbestos before renovating your home

Thinking about home renovations? If your home was built before 1990, it probably contains asbestos, which will have to be removed safely before any other work can begin.
Asbestos is an odourless, colourless, naturally occurring mineral that can be found in more than 3,000 building materials used in homes built before 1990.
Some common affected materials include vinyl tiles and linoleum flooring, loose insulation such as vermiculite, roof shingles, stucco, pipe insulation, gypsum-board filling co