Surface Preparation
• The surface must be strong, clean, and dry, free from oil, dust, rust, curing agents, paint, or any contaminants. The surface must be firm and not peeling. Repair cracks with suitable materials and level the surface to avoid standing water.
• For repair works with existing waterproofing systems, remove the old waterproofing layer before application to ensure the best performance of the new system.
• If the substrate is too dry, dampen it with water to cure the concrete before application, but make sure there is no standing water during the work.

Mixing
• Mix ELASTOCEM 300 according to the specified ratio for maximum performance. Pour the powder into the liquid and mix thoroughly using a low-speed mixer (not exceeding 400 rpm) for 3–4 minutes. Let it sit briefly to release air bubbles before application.
• Avoid adding extra water into the mixture. Once mixed, the material should be used within 30–40 minutes.

Application
• Apply the mixture with a stiff brush at a rate of 1.0–1.5 kg/m². Each coat should not exceed 1 mm in thickness. Allow 2–3 hours for drying.
• Apply the second coat in the same way but perpendicular to the first coat. A sponge can be used to smoothen the surface finish.
• For spray or trowel applications, adjust the mixing ratio as appropriate for the application method.

Curing
• Protect the waterproofing layer from rain until fully hardened. Cure with moisture for 3–4 days.
• Ready for foot traffic after 1 day of installation.
• In bathrooms or swimming pools, tiles can be laid 3–5 days after application.
• For water tanks, apply on the inner surface. The tank can be filled with water after 5–7 days, but rinse thoroughly with clean water before use.