The ABCs of raising a green roof
Energy savings, heat relief among perks of planting a raised canopy
CBC News Posted: Aug 10, 2015 3:35 PM ET Last Updated: Aug 10, 2015 3:35 PM ET
A growing number of consumers are trading asphalt shingles for succulents and shrubs in a bid to reduce greenhouse gases and save on energy costs. But rooftop gardens can be a considerable investment. Here's a look at the nitty gritty of going green.