What is the cheapest way to insulate roof from the heat of the Sun?

Philippines
April 2, 2010 8:03am CST
The roof is covered with galvanized iron sheets.
2 responses
@redhotpogo (4401)
• United States
2 Apr 10
I'm not sure if this is true or not (never tried it), but I've heard if you paint your roof white, it will reflect sun's rays, and make your house cooler.
• Philippines
3 Apr 10
its true that white roof will reflect sun rays. But the heat or radiation is still very strong. So the floor that is just under the roof will get most of the radiation.
@bird123 (10643)
• United States
3 Apr 10
PLANT A TREE!!The world will love you for it!!