COMMERCIAL LEVELING COMPOUND
SL - C13 has been especially designed to produce a smooth, flat surface when applied to hard, rigid sub-floors such as sand/cement screeds, concrete, etc. SL - C13 contains high quality special cements and selected fillers so that, when mixed with water, a fluid easily trowelled mortar with free-flowing properties is produced. The mixed mortar can be applied up to a maximum thickness of 5mm in one application but will more normally be applied at 3 - 5 mm.
FEATURES
• Cement-based
• Very low emission
Produces flat and absorbent surfaces for the subsequent laying of all kind of flooring products.
• Pumpable
• Self-smoothing
Almost tension free
• Easy to grind
• Suitable for chair castors
• Suitable for underfloor heating
• For thickness up to 5 mm
USE
SL - C13 should be used to level and smooth uneven internal sub-floors such as concrete, cement / sand screed, quarry tiles, etc. prior to the installation of resilient flooring. SL - C13 has been formulated to cater for the high humidities and high ambient temperatures that are typical in tropical climates.
SURFACE PREPARATION
Restrictions:
Not suitable for exposed wearing surfaces. For internal use only.
The surface must be hard, sound and free of dust, dirt and other barrier materials such as grease, paint, water - softenable adhesive residues or loosely adhered materials, etc.
Use a suitable degreaser to remove polish, wax, grease, oil and similar contaminating substances. Where hard, firmly adhered adhesive residues are present they should be of sufficient cohesive strength to support the applied levelling compound; a trial application is recommended to assess suitability. Do not apply SL - C13 over old residues that are softened by water.
PRIMING
CLI AT 109 Priming is mandatory especially onto very absorbent sub-floors such as concrete or cement/sand screeds. Use SL - C13 primer to seal the pores, to prevent air bubbles from rising through the applied mortar, to maintain flow life and also to promote excellent uniform adhesion to the substrate. With very smooth, dense and nonabsorbent sub-floors it may be necessary to use CLI N18 primer to ensure adequate adhesion of the subsequently applied SL - C 13.
MIXING
The use of an mixing paddle with a 10mm chuck, variable speed drill ensures thorough mixing with maximum sheer yet minimum air entrapment and heat build up. The use of mixing buckets is recommended to reduce the incidence of unmixed powder around the bottom of the bucket.
Always add correctly measured water to a clean mixing bucket first; SL - C 13 powder should then be added whilst stirring slowly. Mix steadily and thoroughly until a lump-free fluid mortar is produced. After approximately two minutes mixing scrape down the sides and around the bottom of the bucket to ensure no deposits of dry powder. Continue mixing for another minute until an even consistency is achieved.
It is not recommended to split bags of SL - C13 ; a 25kg bag should be mixed with approximately 5.5 - 6.0 litres of cool, clean water
APPLICATION
Pour SL - C13 mortar onto the primed sub-floor and use a steel finishing trowel or float to spread the mortar and finish off. The mixed mortar will flow out and selfsmooth within the first 10 minutes of its 20 minutes working time. A 3 mm layer of SL - C13 will be walkable after approximately 3 hours at 27±1°C; this time is extended at lower and reduced where thinner applications are applied to absorbent sub-floors. Apply at temperatures above 5°C.
DRYING AND HARDENEING
A 5mm layer of CL 11 is walkable after 3 hours and ready to receive floor coverings within 48 hours at 27±1°C.
CLEANING
SL - C13 can be removed from tools and equipment by washing in clean water immediately after use. Any hardened material will need to be removed mechanically.
PROPERTIES
The values shown are typical of results obtained in the laboratory at 27 ± 1ºC. Actual performance values obtained on site may vary from those quoted.
CHARACTERISTICS
Bulk density of powder
approx. 1.3kg / litre
Weight of fresh mortar
approx. 2.0kg / litre
Working time
approx. 25 minutes
Flow life
approx. 15 minutes
Initial Set (Vicat)
approx. 40 minutes
Final Set (Vicat)
approx. 1 hour
Compressive Strength
After 1 day
4 N/mm²
After 7 days
12 N/mm²
After 28 days
14 N/mm²
FLEXTURAL STRENGTH
After 1 day
1.5 N/mm²
After 7 days
3.5 N/mm²
Ball impact Hardness
After 1 day
6.5 mm
Scratch Hardness
After 1 day
6.6 mm
COVERAGE ESTIMATES
Pack size
Coverage
25kg
Approximately 5.5m² @ 3mm thickness
NOTE: These figures are theoretical, due to the wastages and the variety and nature of substrates practical coverage figures may be reduced.
STORAGE AND SHELF LIFE
SL - C13 should be stored under the same conditions as cement; store SL - C13 in cool, dry shaded warehouses. SL - C13 should not be stored in direct contact with the floor. When stored under the correct conditions SL - C13 will have a shelf life of 9 months.
PRECAUTIONS
SL - C13 contains more than 20% cement and, therefore, in line with current legislation, is classified as irritating to eyes and skin. For this reason, the following precautions should be observed. Avoid contact with skin and eyes; in case of contact with the eyes, rinse immediately with plenty of water and seek medical advice; wear suitable gloves and keep the product out of the reach of children. Avoid generation of airborne dust during mixing.
DISPOSAL / SPILLAGE
Spillage of any of the component products should be absorbed onto sand or other inert materials and transferred to a suitable disposable vessel. Disposal of such spillage or empty packaging should be in accordance with local waste disposal authority regulations.
CONDITIONS OF SALE
Sold subject to the Company's conditions of sale which are available on request.
NOTE
The information supplied in this datasheet is based upon extensive experience and is given in good faith in order to help you. Our Company policy is one of continuous Research and Development; we therefore reserve the right to update this information at any time without prior notice. We also guarantee the consistent high quality of our products; however as we have no control over site conditions or the execution of the work, we accept no liability for any loss or damage which may arise as a result thereof.