Spray Foam Insulation Nightmare

What can happen if spray foam insulation is not installed correctly?

Spray foam insulation is sold as an energy-efficient, easy-to-apply solution, but when the job goes wrong, it can be a nightmare for homeowners. Tom Harrington with CBC Marketplace takes you inside the walls and up into the attic to explore a home renovation horror story, a foul-smelling foam job that’s driven a family from its home.