Step 1 : Surface Preparation
Ensure surface is thoroughly clean, dry and free from all loose dirt, chalk, grease, fungi, algae and flaking paint. This can be achieved by brushing with a wire/stiff coir brush followed by water jetting, if required. Fill up all minor cracks and defects with suitable Dulux Aquatech Crack fillers (5mm, 10mm & 20mm) according to the crack size and depth or cement and sand mixture in the ratio 1:3. To ensure easy workability and better bonding strength with the surface, it's essential to pre-wet the surface properly.
Step 2 : Application process
Mix Aquatech Waterproof Putty with 30%-40% clean water (by weight) thoroughly to make a smooth homogenous paste. Aquatech Waterproof Putty paste from bottom of the substrate in an upward direction uniformly with the help of a steel trowel/putty blade to ensure less wastage. Allow at least 3 hours drying time for the applied paste. After drying of the first coat rub the surface very gently with the putty blade in order to remove loose particles. Apply the second coat after the first coat is fully dried or set. Preferably, leave the surface to dry overnight.
Step 3 : Drying time
Drying time for the putty is 8-10 hours, preferably overnight.