SikaScreed®-1
SikaScreed®-1 is a pre-mixed product for quick drying shrinkage-free indoor and outdoor screeds.
- Ready-to-use.
- No shrinkage.
- Very good finishing.
- Quick hardening.
Usage
- Formation of unbonded 30 mm to 60 mm thick screeds in civil or industrial environments.
- Formation of bonded 12 mm to 60 mm thick screeds.
- Can be covered with tiles, parquet or resilient materials.
- Heating screeds, by burying radiating coils in the layer. Plasticizer additives do not need to be added to the mixture when SikaScreed®-1 is used.
- Suitable for industrial environments, offices, commercial centres, etc.
Advantages
- Ready-to-use.
- No shrinkage.
- Very good finishing.
- Quick hardening.
Packaging
25 kg bags
Colour
Granular grey powder
Product Details
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN 13813 - Resin screed material for internal use in buildings - Class CT C25 F5
Chemical Base
Hydraulic binders, silicon/quartz mineral charges, copolymers of organic nature and specific additives
Shelf Life
12 months
Storage Conditions
In original unopened and undamaged packaging in a dry area at temperatures between +5°C and +25°C.
Compressive Strength
After 7 days: >13 MPa - after 28 days: >25 MPa according to EN 13892-2
Flexural Strength
After 28 days: ≥ 5 MPa according to EN 13892-2
Application
Mixing Ratio
1.8 - 2.0 L of clean water for each 25 kg bag
Layer Thickness
Unbonded 30 to 60 mm thickness. Bonded 12mm to 60mm thickness.
Ambient Air Temperature
min. +5°C - max. +35°C
Substrate Temperature
min. +5°C - max. +35°C
Pot Life
~ 45 min*
Waiting Time / Overcoating
| Walkable: | ~ 12 hours * |
| Laying of ceramic tiles: | ~ 24 hours * |
| Laying of natural stone or marble: | ~ 72 hours ** |
| Laying of parquet: | ~ 7 days*** |
* Times have been measured in ambient temperature +23°C and R.H. 50%. Higher temperatures reduce those times; oppositely, lower temperatures increase them.
** For stones and marbles sensitive to humidity the time must be extended to 7 days.
*** Times have been measured in ambient temperature +23°C and R.H 50%, screed thickness ≤ 5 cm and ventilation ≥ 2 m/sec.
Consumption
16 - 18 kg/m2 per cm of screed thickness
MIXING
Mix 1.8 -2.0 L of clean water for each 25 kg bag. The product can be mixed in an ordinary concrete mixer, in a screw mixer or in a continuous mixer type PFT or Continental. The amount of water must be dosed in order to get a plastic, highly workable paste. Too little water (damp soil consistency) will considerably reduce the mechanical strength of the finished screed, and too much water (fluid) will increase the hygrometric shrinkage, making it inadvisable to fix ceramic tiles after only 24 h. The mixing operation must be completed within 2 minutes
APPLICATION
Compressible material must be positioned all around the edges of the room and around any pillar, so as to form the insulation joint. The product must be applied in the same way as a normal cementitious screed, by preparing the level strips, which will then serve for spreading with a striker. The laying is carried out as for a normal cementitious screed. Spread the mixture, taking care to compact the surface to obtain an homogeneous layer. Float finishing must be carried out immediately after the product has been spread or within 60 minutes. When this operation is carried out, the surface of the screed can be splashed with water from a brush, so as to make the job easier and faster, especially if a machine with a steel disc is used.
CLEANING OF TOOLS
Clean with water before hardening. Hardened product must be mechanically removed.