how to water and heat proof your roofs

Cementious is a waterproofing method for concrete that uses cement-based polymer coatings. When applied correctly, the cement can create a strong and durable moisture barrier for cement walls and floors. The barrier will come in the form of epoxy or latex mixes. it will usually cost 65 to 70 PKR per sqft.
For heat proofing jumboloon sheet is very effective as it creates barrier of foam between roof concrete and sun which reduce temperature upto 6 degrees.
we also use marble on top of jumboloon to reduce external temperatures..