The cement work in most of ridge capping, and valley might be pretty hard and not need to be drag. This is known as roof re-pointing. No matter, you own cement roof or terracotta roof, the roof would need maintenance. The most regular roof repairs that take place are the roof re-pointing of ridge capping cement. Roof pointing is the second layer which moves over top of bedding to help in creating a stronger bond on the tiles and fix the roof against dirt and water.