Water proofing is a term which consist application of water proofing materials on substrate to prevent water infiltration of water and act as a moisture barrier to prevent flaking paints. A good water proofing works well even got pond water on substrate (Eg: Swimming Pool).
There are several factors which cause water proofing failure. Mainly are:-

• the quality of the water proofing materials itself.
• there is some renovation works proceeding in our neighborhood.
• there is settlement occur on extension, shrinkage on our slab, or the structure is not well design.
• recent increase in our global climate temperature which cause shrink and expand more drastically.
• lack of water proofing knowledge by the applicant which includes surface preparation, application method, and wrong selection of water proofing materials to be use on designated area.

When water leak, for sure it will spoiled your house appearance, time and economic loses. This problem must be proper attired to prevent repeating maintainance cost.