Sika® Leveling Mortar

6 months from the date of production If stored properly in undamaged, original, sealed packaging.

Store in cool and dry conditions, protected from direct sunlight.

~ 1.75 kg/l

Flowable consistency: 4.5 - 5 liters of water per 25 kg of powder.

~ 2.10 - 2.15 kg/l

Minimum 40 minutes (30°C)

Approximately 2.1 kg/m² for 1 mm thickness

Sika® Leveling Mortar should be mechanically mixed in a clean container using a heavy - duty drill and paddle or a forced - action mixer. A normal tilting drum concrete mixer is not suitable. According to the mixing ratio (4.6-4.8 liters per 25 kg bag) :

• First place the water into the clean mixing container and add Sika® Leveling Mortar slowly while mixing. Ensure a minimum mixing time of 3 minutes.
• During mixing, the mortar will initially have a visibly stiff apperance, but upon continuous stirring, it will become free-flowing. Hence, do not add more water than the recommended maximum mixing ratio. The speed of the mixer should not exceed 500 rpm to minimize air entrainment.
• After mixing, stir lightly with a spatula for a few seconds to release any entrapped air. Pour the free flowing mortar immediately onto the prepared concrete floor and distribute with notched trowel or rake depending on thickness to be installed.

Go over freshly laid material with spike roller to release entrapped air and improve flatness in thinner sections.

Curing as such is not required for indoor use. After application however it is recommended to close windows and doors in order to avoid premature moisture loss, which may cause cracking.
If used outdoors i.e. preleveling of flat roofs, terrases etc, it is recommended to shade the area and protect againt strong wind and rain.
"Outgasing" concrete can cause bubble formation during stiffening of Sika® Leveling Mortar. Resulting " Crater" can be saned back next day if necessary.
Porous concrete substrate may absorb mixing water from the Sika® Leveling Mortar and lead to spider web like pattern on the cured Sika® Leveling Mortar.

At temperatures of 25°C and below, setting time and strength development will be slower.

Clean all tools and equipment with water immediately after use. Hardened mortar can only be mechanically removed.