Sika Sikafloor 1 Metaltop

Sika Sikafloor®-1 MetalTop is a one part, pre-blended, coloured metallic dry shake hardener for concrete comprising of cement, hard metallic non corroding aggregates, special admixtures and pigments.

Best Uses

Sikafloor®-1 MetalTop provides a non-staining, ultrahard wearing, metallic dry shake topping for monolithic floors. When sprinkled and trowelled into fresh wet concrete floors, it forms a coloured, extremely wear resistant smooth and dense surface. Typical uses are in warehouses, heavy duty, prestige and high durability requirement distribution centres, factories, manufacturing facilities, transport terminals, power stations, etc.

• Highest wear resistance rating
• Excellent impact resistance
• Non staining, non-corroding
• Cost effective, long life floor
• Maintenance free. Regular cleaning is simply all that is required
• Slip resistant surface possible
• Dust proof
• Available in a range of colours

Sikafloor®-1 MetalTop may only be used by experienced professionals.

Application

SUBSTRATE QUALITY
The concrete deliveries must be of consistent quality and comply with local standards. A concrete slump in the range 75 to 110 mm will normally give best results (a slump of up to 150mm is possible with careful mix design). The slab must be of good quality concrete with a minimum water/cement ratio consistent with the production of a fully compacted slab. The compressive strength must be a minimum of 25 N/mm2. Use of Sikament® or Sika Viscocrete® super plasticisers is advised to ensure the optimum quality of concrete and where fibres are used, their optimum dispersion within the mix. Air Entrained Concrete is not a suitable substrate for the application of dry shake hardeners.

APPLICATION
Mechanical Application - Automatic spreader in conjunction with a laser screed Spread Sikafloor®-1 MetalTop evenly onto the concrete immediately after screeding at ~7 kg/m2 in one application.

Manual application - Dependent on the conditions, remove the surface bleed water or allow it to evaporate. Sprinkle Sikafloor ®-1 MetalTop onto the screeded concrete evenly in 2 stages (first stage: 4 kg/m2; second stage: 3 kg/m2). Care must be taken to apply the product without creating ripples etc. in the concrete surface. Overall application rate 7 kg/m2. Casting Sikafloor®-1 MetalTop powder carelessly or further than 2 metres from point of casting will reduce the consistency of finish.

Compaction
The first application must be worked into the slab followed immediately by the application of the second stage quantity of Sikafloor®-1 MetalTop. Notes: Never add water to the surface where the dry shake has been applied. Sikafloor®-1 MetalTop results in the slab surface becoming stiff more quickly than usual. Careful trimming must take place along the edges where adjoining slabs are to be poured. Final finishing for closing pores and removing undulations can be achieved either by hand or powered trowels.

Application time
Application time for dry shake products is influenced by every variable which affects the placing of concrete, and can therefore vary substantially, depending on the prevailing conditions. For mechanical application with automatic spreader and laser screed, the spreading can start almost immediately after the concrete has been levelled to allow for the hydration of the dry shake. Compaction with the trowel can start as soon as the weight of the power trowels is supported by the concrete. For manual application, the dry shake must be spread once the concrete can be stepped on, without leaving a print deeper than 3–5 mm. Periodical checking of the condition and development of the concrete will determine the correct time frame for each stage and sequence of application.

CURING TREATMENT
Cure and seal Sikafloor®-1 MetalTop immediately after finishing using the solvent based product Sikafloor® ProSeal. (Refer to separate Product Data Sheet). Apply in a continuous even film by low-pressure spray unit, application also possible by. Disperse any excess pools using a roller.

Joints
After finishing operations and completing saw cuts, clean off any residual saw lubricant / slurry without delay. Joints can be filled with Sikaflex® PRO-3 or another appropriate Sikaflex® sealant in accordance with the floor design requirements.