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_________ is a flexible material which is commonly used for the damp proofing.

_________ is a flexible material which is commonly used for the damp proofing. Correct Answer Hot bitumen

Due to its physical nature, hot bitumen remain flexible even after cooling and it is placed on the bedding of concrete or mortar. This material should be applied with a minimum thickness of 3 mm. Whereas Mastic Asphalt is a semi rigid material and it forms and excellent impervious layer for damp proofing.

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