Sikalastic®-1K

• CE-marking and Declaration of Performance as surface protection product for concrete - coating for ingress protection, moisture control and increasing resistivity according to EN 1504-2:2004, based on certificate of factory production control issued by notified factory production control certification body and type testing.

Cement modified with alkali resistant polymers, selected aggregates, fine fillers admixtures, additives and fibres.

12 months from date of production

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

D_max: ~0,3 mm

Value obtained with a total layer thickness of 2 mm in two layers with 22 % water

Values obtained with a total layer thickness of 2 mm in two layers with 22 % water

Value obtained with a total layer thickness of 2 mm in two layers with 22 % water

Value obtained with a total layer thickness of 2 mm in two layers with 22 % water

~1,5 kg/l

2 mm with constant dry film thickness, applied in minimum 2 layers.

Maximum recommended thickness per layer is 2 mm when applied by trowel and 1 mm when applied by brush.

5 °C min. / 35 °C max.

5 °C min. / 35 °C max.

~30 min (+20 °C)

Sikalastic®-1K must be completely hardened before over-coating or water contact.
Guide for waiting times at the following temperatures:

Times will vary due to ambient and substrate humidity.

This depends on the substrate roughness; as a guide: ~1,5 kg/m²/mm. This figure is theoretical and does not include for any additional material required due to surface porosity, surface profile, variations in level and wastage etc..

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.

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 Department 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 2 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.

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