What color roof is most energy efficient?

Three ways to make your roof more energy-efficient | Green Home ...

1) Cool your roof
"Cool" roofs are lighter in color than traditional black asphalt or dark wood shingles and save energy by reflecting light and heat away rather than absorbing them.
Jan 4, 2011

What is the purpose of a roof?

The Functions of a Roof | Hunker

Safeguard Roofing
The basic purpose of any roof is to provide protection to persons inside a structure from the elements. This purpose is necessary in every part of the world as the roof provides shelter against something as basic as bright sunshine; add to that other changes in weather, such as rain, snow, sleet, hail and high winds.Jul 17, 2017

Should old roof be removed?

Can You Re-Roof Over Your Old Roof? - HomeTips

Prime Six Roofing Ideas By Specialists - Homes Renovation Idea
If any areas of the roof have become severely damaged, it's usually better to remove the old shingles and start from scratch. ... If you're going to add a roof on top of an old one, it's a good idea to remove any loose shingles and apply a new layer of 30-pound roofing felt before laying the new shingles.Dec 7, 2019