CHARACTERISTICS AND PACKAGING 

PROPERTIES

NOTE: All values are based on test results determined under laboratory conditions and with product samples taken from original stock. Independent laboratory test values are available upon request.

APPLICATION INSTRUCTIONS

Materials Consumption

The typical consumption rate is (2.0~2.2) kg/m² for 1mm DFT. Material consumption depends on the porosity and texture of the substrate.

Application Instructions

Substrate preparation: The concrete substrate should be clean, dry, sound, and free of all contamination, such as dirt, oil, and grease. Surface defects, such as blowholes and voids, must be repaired. Filling of joints and surface leveling must be carried out before coating. Dilute YHElastic-4800 with 1 part of clean water. Stir gently until the mix is homogenous and uniform colour is achieved. Using a short hair wool roller, brush or by airless spray, apply a layer of the diluted YHElastic-4800 onto the substrate and leave the primer to dry efore applying the first coat.

• Detailing: First, apply the coating to detail areas such as deformation joints, water outlets, and concave and convex corners. Install fabric reinforcement between two wet coats to ensure thorough penetration. The total thickness of the composite coating layer should be at least 1 mm.
• Coating application: Standard Coating System: After the primer has dried, apply another two layers of YHElastic-4800 to the desired film thickness. Ensure the previous layer is completely dry before applying the next layer. Leave the whole system to cure for around 48 hours prior to overlaying with cementitious screed.

• Reinforced Coating System: Apply first coat of YHElastic-4800 and embed reinforced fabric (100g/m2 ) onto the wet coating, roll to ensure there are no bubbles or creases. The overlap between the edges shall be minimum 50mm and borders overlap by minimum of 100 mm. Subsequently, apply an additional 2 coats of YHElastic-4800 at desired film thickness. Ensure the previous layer is completely dry before applying the next layer. Leave the whole system to cure for around 48 hours prior to overlaying with cementitious screed.

TRANSPORTATION AND STORAGE

The product should be stored in ventilated areas, protected from sunlight, rain, and fire. Avoid collisions during transportation. The recommended storage temperature range is 5 °C to 35 °C. The shelf life is a minimum of 12 months under normal transportation and storage conditions.

PRECAUTIONS

• Users must familiarize themselves with all risks, safety regulations, and adhere to the manufacturer’s recommendations, including material handling and storage specifications.
• Once opened, the product should be used on the same day. Any remaining material must be properly sealed and used as soon as possible.
• The recommended construction temperature range is 5 °C to 40 °C. Construction is prohibited during rain, snow, or if such weather is predicted within 24 hours.
• Protect the applied material from rain before the material fully cured.
• Do not allow permanent exposure to UV light.
• Cementitious substrates shall be > 28 days old prior to application of YHElastic-4800. The substrate moisture shall be ≤ 6 %, oven dry method.
• Do not add extra water or other ingredients (except for priming layer, where only clean water is added) .
• Do not apply YHElastic-4800 on substrates with rising moisture.
• Ensure the waterproof layer is applied evenly. Avoid walking on the surface before it is fully dried to prevent damage to the waterproof layer.
• The complete drying time for each coat ranges from 2 to 12 hours, depending on ambient temperature and humidity. Extend drying time appropriately in humid environments.
• Subsequent construction steps, such as membrane laying, can only proceed after the coating is completely dried to ensure the stability of the composite waterproof system.
• Avoid long-term exposure to humid and poorly ventilated environments.