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1. Brickbat coba will have lot of surface cracks and hence it is not a waterproofing system. 2. The quality of bricks used in BBC is usually of not a good quality hence over a period of time they absorb water and become loose and give way to more leakages. 3. Brick bat coba should not be confused for waterproofing. It is a good wheather proof layer.

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16y ago

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