This standard provides recommendations for waterproofing and damp-proofing treatments for wet areas within buildings, such as toilets, kitchens, and balconies. It covers the selection of appropriate materials, design considerations to ensure effective water management, and guidelines on workmanship for application. The code aims to prevent water leakage, seepage, and dampness which can damage the building structure and finishes.
Waterproofing and Damp-Proofing of Wet Areas in Building - Recommendations
Quick Reference Values
Minimum recommended slope for drainage1 in 100
Minimum upstand height for waterproofing on walls150 mm
Minimum curing period for cementitious treatments7 days
Recommended duration for ponding test48 to 72 hours
Practical Notes
Pay special attention to preparing a coving or fillet at all wall-floor junctions to avoid sharp angles where waterproofing can crack.
Ensure all plumbing pipes penetrating floors or walls are properly sealed with non-shrinking, flexible sealant and have appropriate sleeves.
Always conduct a ponding or water-fill test for 48-72 hours after the waterproofing treatment has fully cured and before laying any overlaying finish, like tiles.