Simply using a lighter color of shingle may not be enough to qualify your roof as a cool roof.
How to cool off a shingle roof.
Roll out the modified bitumen.
Cool roofing can lower a roof s surface temperature by 50 to 60 degrees according to the epa which can save you a boatload on cooling costs.
Substitute reflective marble chips or gray slag for dark gravel in a flood coat of asphalt.
Many homeowners find that the best solution for their roof is to install asphalt shingles designed to meet cool roof requirements.
There are products on the market designed for asphalt shingles that you simply spray or brush on to convert your traditional shingle roof into a cool roof but these products may not be all they re cracked up to be.
Go green literally rock on.
Shingles are generally not as reflective as any of the cool roof options available for low sloping roofs.
Select the perfect shingle.
Add a coat of cool.
Pick a tile almost any tile.
Go with a single ply membrane.
Apply a cool coating directly on top of a dark asphaltic emulsion coating.
Do this by sliding hard under the layers of shingle and paper then pry upward.
Using pry bars remove the ridge vent if present.
Remove shingles in a 2 to 3 ft wide section as you work down the roof.
The shingles will roll up like a ball in front of the fork.
Push the shingles down to the roof jacks.
Starting at the ridge use your shovel to pry off old shingles.
Use reflective mineral granules or a factory applied coating rather than a dark coating on a mineral surfaced sheet.
Continue tearing off the shingles and underlayment until you reach the roof jacks then start over at the top of the roof.
If no ridge vent is present use your shovel to remove the shingle cap on the ridge.