Sikalastic - 1K - 20kg

Sikalastic 1K 

Flexible waterproofing and protection of concrete structures can help preserve and protect the integrity of buildings and other structural components such as tanks, basins, pipes, and more. Flexible coating is ideal for protecting against the effects of freeze-thaw and carbon dioxide attack, helping to improve durability. Suitable for a range of surfaces including bathrooms, showers, terraces, balconies, swimming pools before ceramic tiles are applied using adhesives. External walls which have been backfilled in ground can also be protected against negative water pressure on walls and floors in basements. The advantages of this product include that it is one component only requiring water addition; it has an adjustable consistency making it easy to apply by brush or trowel; has good sag resistance and crack-bridging ability; and has very good adhesion to substrates such as concrete, cement mortars, stone, masonry even when damp.

• One-component product, only water needs to be added
• Adjustable consistency, easy to apply by brush or trowel
• Good sag resistance and easy to apply, even on vertical surfaces

Chemical Base - Cement modified with alki resistant polymers, selected aggregates, fine fillers admixtures additives and fibres.

Shelf Life - 12 months from date of production

Storage Conditions - Store properly in the original packaging, in cool and dry conditions. Protect from water.

Consumption - This depends on the substrate roughness: as a guide ~1,2 kg/m²/mm

Maximun Grain Size - D_max: ~0,3 mm

Application Steps

MIXING

Sikalastic®-1K can be mixed with a low speed (~ 500 r/min) hand drill mixer, adding the right quantity of water according to the respective application. Once a homogeneous mix is obtained, continue mixing for 3–4 min. The mortar must be homogeneous and lump free. Do not add any additional water or other ingredients. Each bag must be entirely mixed, to avoid faulty particle size distribution of aggregates contained in the powder component.

APPLICATION

Special Requirements: All connections between the substrate and pipe entries, plant and equipment, light switches etc., must be sealed and watertight. Joints in concrete, pipes or anywhere else in the structure must also be sealed and made watertight.
Use coved details at the floor/wall junctions.
 

Apply Sikalastic®-1K by:

• spatula/roller: Exerting good and even pressure onto the substrate;
• brush: In 2 directions (diagonally opposite / cross-wise);
• mechanical spray: Refer to Sika Technical Service for details

The optimum waterproofing performance is obtained by applying Sikalastic®-1K by trowel in at least 2 layers, to a total thickness of at least 3 mm.
Application by brush must be undertaken with the maximum attention to uniformly covering the whole surface. The maximum recommended thickness for these methods of application is 1 mm per layer. In these situations, the application of min. 2–3 layers is required (subsequent layers must be applied crosswise).
Wait until the first layer is dry before applying subsequent layers.
The application shall cover the whole surface of the substrate in a uniform thickness.
Sikalastic®-1K cannot be smoothed using float or sponge trowel. It is possible to smooth the surface as soon as the curing of the product is complete by light abrasion techniques.

CLEANING OF TOOLS

Tools should be thoroughly cleaned with water before the material has set. Hardened mortar can only be removed mechanically.