SELF-LEVELLING ACCELERATED SET SCREED
DESCRIPTION
MULTI SELF–LEVELLING FAST is designed specifically for underlay and smooth flooring applications where a smooth, hard surface is required in preparation for installation of carpets, vinyl, linoleum, and other similar floor overlays. Set rate is accelerated to 1 day before overlay (under ambient conditions).
TYPICAL APPLICATIONS
MULTI SELF–LEVELLING FAST provides a hard-wearing non-dusting floor surface for the locations and facilities where a smooth, hard finish for soft flooring is required. Includes hospitals, schools, homes, offices etc.
ADVANTAGES
- Hard surface
- Improved impact resistance
- Self-levelling
- Reduced shrinkage
- Reduced pin-holing
- Ease of application
- Excellent coverage
- Economical
- Standard set rate
TYPICAL PROPERTIES
Yield: 14L
Appearance: Light grey finish
Coverage: 4.6m2@ 3mm
Working Time: 10min – 12min
Initial Set Time: 20 min
Walk-on Time: 4-6 hours
Time to sanding: 10-12 hours
Application Temperature: 15°C to 25 °C
Application Thickness: 0.5mm – 10mm
Flexural Strength: 4 MPa (28 Days)
Compressive Strength: 28 – 30 MPa (28 days)
Water / 20kg Bag: 5L
WATCH POINTS
- Do not re-constitute the mix after initial setting has occurred.
- Do not apply over floors recently heated via underfloor heating. Allow floors to cool before application.
- Apply minimum 10mm nominal screed thickness over underfloor heating elements.
- Colour of the screed surface on setting may not be uniform in appearance.
DIRECTIONS FOR USE
SURFACE PREPARATION
Surfaces are to be clean, sound and free of deleterious substances. Remove all laitance, oil, grease, mould oil or curing compound from concrete surfaces using wire brush, bush hammer, scabbler or other plant as appropriate. When repairing damaged concrete, ensure that all loose concrete has removed down to a firm base. Note construction joints that need to be carried through the floor to surface.
PRIMING
Prime floors with MULTI SCREED PRIMER. Allow for penetration into the substrate and remove any excess pooling of primer. MULTI SELF–LEVELLING FAST can then be applied over the tacky primer but not after the primer has lost its tacky feel. Do not apply over wet pooled primer as this will create runs in the screed and surface discolouration.
APPLICATION
Mix 5Lts clean water with 20kg of MULTI SELF–LEVELLING FAST well in a bucket using a mechanical mixer. Ensure all lumps have been broken up. Pour over the primed areas and pin rake to the required thickness. Spike roll stubborn rake lines to promote a smooth, level finish. Allow 10-12 hours to set hard. Sand with 100-120 grit sandpaper to remove high points and polish to a hard, dust free surface.
EQUIPMENT CARE
All tools should be cleaned with water immediately after use. If delayed, equipment will need mechanical action to clean or be discarded.
PACKAGING
Supplied in 20kg bags.
QUALITY ASSURANCE
Multi Construction Chemicals South Africa (PTY) Ltd production and testing programs comply with all local and international testing standards.
REVISION: 3.1
The information supplied is believed to be reliable. As we do not have any control over the processing or application of the product we cannot guarantee the results to be obtained.
Users assume all risks and liability resulting from the use of this product and must confirm suitability thereof by conducting their own tests.
No guarantee is expressed or implied. Liability to the replacement of faulty material.
FOR PROFESSIONAL USE ONLY.