AP Top Seal 119 – Obaproof

Description

Characteristics & Advantages

• Good crack bridging capability (up to 1mm at +20°C)
• Easily applied by roller or brush
• Increases frost and salt resistance
• Decreases carbon dioxide penetration
• Resistant to freezing and thawing (-10°C)
• Mixes and applies easily
• Impermeable

Features

• Flexible and accommodate movements
• Good adhesion to sound substrates
• Applicable to damp substrate
• Abrasion Resistant
• Paintable with elastic paint
• Can be tiled over
• Non-toxic

Application Area

• Watertanks, Wastewater treatment plants
• Bathrooms, Balconies, Terraces
• Swimming pools, Pool decks
• Water features, Ponds
• Retaining walls, RC Gutters, Outdoor Deckings

Pot Life / Shelf life

Shelf Life:
12 months from date of manufacturing if store properly in original unopened packaging.
Pot Life:
Approximately 30 minutes (at +20 °C). It is shorter at higher temperatures. Cover material container when not in use.

Storage

Store all materials in a cool and dry place, in an elevated condition.

Uses

Waterproofing, sealing of hairline cracks and as a protective coating against aggressive elements such as carbon dioxide (for example, in concrete repair work), frost and de-icing agents.

Surface Preparation

All substrates shall be sound, clean and free of dust, excess mortar, oil or other loose particles. Cracks, honeycombs and other defects must be repaired using suitable cement mortar.
For excessively dry substrate, dampen the substrate and keep it continuously moist for 1 to 2 hours before application. Remove all excess water or standing water and allow the surface to become almost dry to provide an SSD (Saturated Surface Dry) condition before applying the waterproofing coating.

Application

• The mixed Obaproof AB Top Seal 119 can be applied onto the prepared substrate using a bristle brush or roller. Place the material well onto the substrate to achieve full bond. • The application of Obaproof AB Top Seal 119 waterproofing coating shall be done in minimum of two layers, the first layer in one direction and the second layer in a direction perpendicular to the first coat. Apply the subsequent layers after 3-6 hours curing of the previous coat. • Minimum 2 layers at approximately 1.0kg/m² per layer. • For areas subject to high water infiltration, apply a third layer at 1.0kg/m². • Allow at least 24 hours for curing of the finished coat (subject to 23°C and 50% relative humidity) before laying the screed or tilling. Water tests can be conducted after the same duration. • An additional stripe coat is recommended over cracks, wall/floor intersections, etc. as these locations are where movement is most likely to be expected in service.

Curing Time

Curing
Special curing methods are generally not required but some precautions should be taken for applications directly under sunlight and windy conditions.

Coverage

1. Ground moisture, bathrooms, balconies – 2kg/m², 2 layers at 1.0kg/m²/layer.
2. Hydrostatic Pressure areas, water tanks, swimming pools – 3kg/m², 2 layers at 1.5kg/m²/layer.

Mixing

• Mixing ratio of 2 part powder to 1 part of liquid by weight.
• Mix in a clean container by slowly adding the powder component to the liquid component whilst stirring using a slow speed heavy-duty electric mixer with a suitable paddle.
• Mix until homogeneous slurry is obtained and make sure that no unmixed powder is left at the bottom of the container. Small amounts may be hand-mixed separately.

Note

• Never apply more than 2kg/m² of Obaproof AB Top Seal 119 in a single layer.
• For better keying, a bonding coat is recommended using a mixture of Obaproof Latex, cement, water and fine sand. For details, please refer to the Product Data Sheet.

Cleaning of Tools

• All tools, equipment and surrounding areas can be cleaned with clean water before the product sets.
• Hardened and/or cured material can only be mechanically removed.

Technical Data

• Ambient Air Temperature: min. +8°C • Substrate Temperature: min. +8°C • Density: 1.7-1.9kg/l(mixed) • Binder: Cement • Extender: Selected Fine Silica • Polymer: Acrylic Polymer • Tensile strength (ASTM D412): > 1.5N/mm² • Adhesion to concrete: > 0.9N/mm² • Elongation at break: > 150% • Crack Bridging: No cracking at 2mm with 0.043 • Hardness Shore A: > 70 • Resistance to water penetration at 0.2kgf/cm³ for 6 hours: No Penetration • Toxicity: Non-toxic • Set to touch (at 20°C) : Within 2 hours • Final set (at 20°C) : 24 hours

Safety

Suitable protection clothing, dust masks, gloves and eye protection should be worn. Continual or extended contact with cement products can cause skin irritation. If skin irritation occurs, flush skin with water for a minimum of 15 minutes. If irritation still persists, consult medical advice.