Darick Self Levelling Floor Screed

Technical Data Sheet

Darick-Self-Levelling-Screed

TILE MAGIC / DARICK - SELF LEVELLING FLOOR SCREED is a high performance smoothing and repair compound based on rapid set shrinkage compensation cements.

Typical Applications

TILE MAGIC  /DARICK - SELF LEVELLING FLOOR SCREED is a high strength cement-based compound formulated for rectifying and smoothing imperfections in dense flooring, like power floated concrete, terrazzo etc. Producing a light duty wearing surface. Can also be used to screed under ceramic or porcelain tiles, carpets, wooden floors etc.

Typical Properties

  • Colour: Cement Grey
  • Open Time: Approx. 30 Minutes at 23 oC
  • Operating Temperature: 0 to 100 oC
  • Pot Life: Approx. 20-30 minutes
  • Flash Point: Nil
  • Storage Life: 12 Months when stored in dry conditions

Directions for Use

Surface Preparation

  • New floor and wall surfaces must be allowed to cure for the minimum periods as tabled below to ensure that movement due to shrinkage does not affect the tiling.
    • New Concrete – 6 weeks
    • New Plaster – 2 weeks
    • New Screed – 4 weeks
    • New Render – 2 weeks
  • The surface must be stable and solid.
  • Ensure that the surface is clean, dry and free of all traces of laitance and contamination such as loose particles, oil, dust, waxes, bitumen, paint, grease, weak cement screeds, weak renders, sealing compounds, previous adhesives etc.
  • Approximately 80% of the surface must be chipped before applying the adhesive OR primed with a mixture of TILE MAGIC / DARICK KEY KOTE (PRIMER) mixed with TILE MAGIC / DARICK -  GOLDEN 5 HOUR FAST SET to form slurry and applied with a builders block brush allowed to dry prior to applying the tile adhesive. (1 part Tile Magic / Darick Key Kote (Primer) to 2 parts Tile Magic / Darick - Golden 5 Hour Fast Set or 1.5 parts ordinary Portland cement (by volume).
  • Organic growth must be killed and removed using an effective fungicide.
  • Dense, smooth off shutter and power floated concrete and smooth plastered walls should be acid etched to obtain a sound keying mechanism. Extremely porous backgrounds must be primed with a mixture of TILE MAGIC / DARICK KEY KOTE (PRIMER) &  TILE MAGIC / DARICK -  PREMIUM BASE KOTE to form a slurry

Mixing

  • Use 3:1 SLU: Water mixing ratio (by mass) or 5 Litres per 20 Kg bag.
  • Too much/too little water results in poor performance.
  • The substrate should ideally be at ambient temperatures upon application of the product.
  • Mix to a creamy consistency, mix occasionally whilst in use WHITOUT mixing more water and use immediately. Mix until product is homogenous and no lumps evident.
  • Do not mix up more than can be used in 20 – 30 minutes.
  • TILE MAGIC / DARICK – TILE BOND replaces the water for special applications. (See below).

Application

  • For best results, close windows and doors to prevent drafts.
  • Also area must be protected from direct sunlight.
  • It is recommended to rake the product to ensure trapped air is released.
  • Using a smooth steel trowel apply TILE MAGIC / DARICK - SELF LEVELLING FLOOR SCREED over the surface and work to a smooth level surface.
  • Allow the layer to dry fully before proceeding with laying floor covering or subjecting it to traffic.
  • Screed of up to 8mm can be laid in single operation.  Trowel marks and high spots can be removed with coarse sandpaper of a corundum stone when the screed is dry
  • Depending on the weather conditions, it is advised to add a light spray of water on the product to ensure there is enough water for the hydration reaction.
  • Allow for expansion joints when levelling more than 5m2 at a time.
  • The product needs 24 hours’ time before tiling with TILE MAGIC / DARICK - Tile Adhesive.

Special Application

  • When underfloor heating is incorporated, TILE MAGIC / DARICK – SELF LEVELLING FLOOR SCREED must be mixed with TILE MAGIC / DARICK - TILE BOND instead of water.
  • For high traffic areas requiring harder wearing surfaces it is recommended that TILE MAGIC / DARICK - TILE BOND replace the water fraction required for TILE MAGIC / DARICK - SELF LEVELLING FLOOR SCREED.
  • When screeding an underlay for vinyl, the screed needs to be air rated with a spiked roller and spiked shoes to obtain a mirror like finish.
  • PLEASE NOTE: TILE MAGIC / DARICK – SELF LEVELLING FLOOR SCREED is a repair compound and/or underlay. If used as a final floor the SLU must be mixed with TILE MAGIC / DARICK - BOND instead of water and the final cured surface must be sealed with an epoxy sealer. MIXING with bond extends the curing time.

Coverage

Coverage is approximately 1.8kg/m² for every millimeter thickness.

Precaution

  • Ensure that the above instructions are adhered to al all times and not adulterate the product in any way as this could cause failure.
  • People with sensitive skin should wear rubber gloves.  Seek medical attention if irritation or discomfort persists after contamination with adhesive.  In case of eye contact, wash well with clean water and obtain medical assistance if discomfort persists.
  • Do not ingest.
  • Do not discharge into drains.
  • Keep away from children and pets.
  • Clean all equipment immediately after use with potable water.
  • Structural movement joints must be respected and joints must be provided for.

Contact TILE MAGIC / DARICK for further health and safety information.  Dispose of this product in accordance with local regulations.

Packaging

TILE MAGIC / DARICK – SELF LEVELLING FLOOR SCREED is supplied in 20kg double lined moisture resistant bags.

Guarantee

TILE MAGIC/DARICK – SELF LEVELLING FLOOR SCREED is guaranteed when used in accordance with correct product application and instruction procedures.