Black is the most effective colour for trapping the sun's heat, while white is the best at repelling it. Black pavement accounts for 40% of urban surfaces while roofs -- typically covered with black or dark shingles --account for 20% to 25%. For the full column see http://bit.ly/5MqZXt … [Read more...] about White roofs will save more than $1 Trillion globally!
White roofs will save more than $1 Trillion globally!
