Water proofing methods vary depending on the extent of damage to the terraces.
9.1 Water proofing of terraces where only top portion is damaged :
Step 1 : Break unsound existing top layer.
Step 2 : Clean and compact brick bat coba.
Step 3 : Level it using mortar 1 :3 ( cement : sand ) mix and cure it.
Step 4 : Make polymer modified mortar using 1 kg cement + 3 kg of sand +1 kg
of RESIKON 800 ( flexible polymer) using electrically operated mixer.
Step 5 : Apply polymer cement slurry using brush on the entire surface.
RESIKON 800 modified mortar being flexible will take care of dimensional variation caused by atmospheric temperature variations. The layer should be around 5 mm thick.
Step 6 : Apply second coat of polymer modified mortar, if required.
Step 7 : Lay 20 mm screed having 5-10 % of RESIKON 400 in cement mortar.
Step 8 : Apply seal coat of RESIKON 400 + cement (1 :1).
Step 9 : Cure using water fog or damp gunny bags.