LeafSeal WP502

LEAFSEAL WP502 | TWO COMPONENT HIGHLY ELASTIC CEMENT BASED WATERPROOF COATING

Product Overview

Description: LeafSeal WP502 is an elastomeric cementitious waterproofing coating designed for water retaining and water excluding structures. It provides robust resistance against high water pressure in various applications. This two-component system, based on a special synthetic resin dispersion and selected cements, is formulated with non-toxic materials, making it ideal for potable water usage.

Features and Benefits

1. Flexible & Elastic:
   • Can bridge over cracks.
   • Exhibits excellent crack accommodation qualities even after long-term water immersion.
2. Heavy Topping Endurance:
   • Ability to withstand heavy topping without fracture.
3. High Hydrostatic Pressure Resistance:
   • Withstands high hydrostatic pressure.
4. Excellent Adhesion:
   • Demonstrates excellent adhesion to a sound substrate.
   • Bonds effectively to green concrete.

Application Range

• Water Tanks
• Swimming Pools and Pool Decks
• Corrosion Protection for Reinforcing Steel
• Under Marble, Granite, Even in Wet Areas
• Suitable for Use on New or Refurbishment Projects
• Water Features and Ponds
• On External Environmental Decks

Specification Clause

All indicated areas shall be waterproofed with LeafSeal WP502, a two-component reactive polymer composite or similar approved, manufactured according to the specified standards. The material shall be applied at the rate of 0.8 – 1 kg per m² per coat (2 coats required) following the manufacturer’s recommendations.

Packaging

Available in two pack sizes: 30kg set, Comp A – 20kg & Comp B – 10kg

Shelf Life

6 months when stored in the original unopened packaging.

Coverage

Approximately 0.8kg – 1kg per m² per coat.

Surface Preparation

Ensure the substrate is clean and sound, free of dust, loose particles, grease, or any other contaminants. The substrate must be damp but free from standing water.

Mixing

Pour the liquid component into a clean pail, and slowly add the powder component while stirring using a slow-speed drill mixer until the mixture is homogeneous and free of lumps. Do not mix more material than can be utilized in one hour. DO NOT RE-TAMPER WITH WATER.

Application

Apply the mixed LeafSeal WP502 using a stiff bristle brush, roller, or trowel. For heavy depressions (6 – 10 mm), honeycombs, etc., use a thicker mix by using slightly less liquid component. Apply the second or subsequent coats after the previous coat has dried. The second coat can be applied after 1-2 hours of curing of the previous coat. Protect the construction area without standing water after 24 hours of construction.

Storage

Conditions of storage are the same as those for cement, i.e., damp-free, preferably palletized.

Cleaning

Tools and equipment should be cleaned immediately with water.

Product Limitations

• Concrete substrate must be thoroughly prewetted before the coating is applied.
• Part mixing is not recommended.

Safety Data

LeafSeal WP502 is a cement-based product and should be handled and treated with caution. Avoid contact with eyes and wear a face mask to prevent dust inhalation. Seek immediate medical assistance should irritation or ingestion occur.

Technical Data

Properties of Cured Membrane

• Elongation at Break (%): ASTM D412 > 80%
• Tensile Strength (N/mm²): ASTM D412 > 0.9N/mm²
• Crack Bridging Ability under Standard Conditions: BS EN 14891:2012 > 0.8 mm
• Adhesion Strength: BS EN 14891:2012 > 0.5N/mm²
• Water Impermeability of 1.5 bar for 7 days: BS 14891:2012 Pass

Product Identity

• Component A: Powder
• Component B: Liquid
• Supply Form: Grey (Powder) and Milky White (Liquid)
• Specific Gravity (Mixed): 1.74 kg per liter

Mix Ratio (by weight): 2 (Powder) to 1 (Liquid)

The technical details and recommendations are given in good faith and represent the best knowledge and experience at the time of printing. The responsibility lies with the user to ensure proper product usage.