Sikafloor®-357 Level

Cement based, Polymer modified

6 months

Store with original, unopened packaging. Store in cool, dry place.

Approx. 2.0 kg/ltr (wet density)

Primer:

light porous concrete surface: Sikalastic®-500 Acrylic Primer HK, Sikafloor®-01 Primer TH

high porous concrete surface : Sikadur®-732

Leveling:

Sikafloor®-357 Level

Test result according to JC/T 985-2005.

Test result according to JC/T 985-2005.

Test result according to JC/T 985-2005.

Test result according to JC/T 985-2005.

A1

+5 °C min. / +30 °C max.
For increased surface strength and better bond of the floor finish when using water based adhesives, it is recommended for best results to apply the mortar at ambient and substrate temperatures between 15 °C and 25 °C.

< 75 % max.

+5 °C min. / +30 °C max.

The temperature will affect the pot life.
Application at temperatures above +23 °C will reduce the pot life and the working time. Temperatures below +23 °C will increase the pot life and extend the working time.

• Suitable for overcoating with impermeable or moisture sensitive floors after drying (max. 4 % humidity); normally reached after 24 hours in 5 mm thick.
• Times are approximate and at +23 °C and 50 % R.H. and thus will be affected by changing substrate and ambient conditions, particularly the temperature and relative humidity.
• When over coating Sikafloor®-357 Level always ensure the moisture content has achieved the required value for the coating product, as the waiting time will vary with the application thickness and ambient humidity.(Refer to the top coat product data sheet)

At +20 °C and 50 % r.h.

Note: Times are approximate and will be affected by changing substrate and ambient conditions, particularly the temperature and relative humidity.

This figure is theoretical and does not include for any additional material required due to surface porosity, surface profile, variations in level or wastage etc.

Use an electric stirrer (< 600 rpm).

• Pour 5.5L of cool, potable water into a suitably sized and clean mixing container, using a calibrated measuring jug, or similar, to ensure strict control of the water content (avoid over-watering).
• Cool water 21°C serves to maximize the working time; if available water is not at this temperature, then consideration should be given to cooling the water.
• Add Sikafloor^®-357 Level to the water, while slowly mixing with a low speed electric mixer (< 600 rpm), adding the complete contents of the 25kg bag.
• Once all the powder has been added, continue mixing until a lump-free and uniform consistency is achieved. This should typically take no less than 3 minutes. But do not over-mix or allow the paddle to rise above the level of material as this will introduce and entrap air into the mix, potentially shortening the working life or causing pin-holing in the underlayment.
• Let the mixed material stand until the majority of air bubbles have dispersed.
• When pump-mixing, employ the 5.5L to 25kg water to powder ratio within a continuous mixer and pump, or a batch mixer and pump, ensuring that the mechanical mixers and pumps are in sound working order.

• Pre-clean and test the equipment, checking that the mixing and pumping elements are fully functional and that meshes are in place to prevent foreign matter from entering the hopper or being dispensed onto the floor.
• Mix thoroughly for a minimum of 3 minutes.
• After mixture, please test the flow first, if the flow is too high or lower than specification, please reduce or increase water dosage.

Prior to placing the underlayment, ensure that all sources of premature drying or direct sunlight are blocked off to avoid accelerated curing and reduced physical properties. The stated ambient and substrate application temperatures are to be achieved before installation and should be maintained for a period of at least 3 days thereafter.

Pump:

• Use a conventional floor screed continuous or dual stage mixer and pump and control the water dosage to achieve the required flow, measuring the final average flow diameter on a flat, clean, dry horizontal surface.
• Cylinder according to JC/T 985-2005
• Internal diameter: 30 mm       Height: 50 mm
• Flow =140mm ± 10mm (5.5 L water per 25 kg)
• After placing onto the surface, apply by trowel or pin screed rake to the required thickness.
• The use of a spiked roller is recommended for improved surface homogeneity.
• Roll thoroughly with a spiked roller in two directions to remove any entrapped air, but do so quickly and just after it has been applied and move on.
• Do not over-roll!

Manual:

• Pour the mixed material onto the prepared surface and apply by trowel or pin screed rake to the required thickness.
• Roll thoroughly with a spiked roller in two directions to remove any entrapped air.

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be removed mechanically.