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Sikafloor®-21 PurCem® is a self-smoothing multi-component, waterbased colored polyurethane hybrid flooring screed. It has flat, high abrasion, chemical, impact and slip-resistant finish.
Verified performance data for Sikafloor®-21 PurCem®, taken directly from the Sika Pakistan Product Data Sheet.
| Chemical Base | Water-based polyurethane cement hybrid |
|---|---|
| Appearance / Colour | Part A neutralLight biege liquid Part AColoured liquid Part BBrown liquid Part CNatural grey powder Part Dcolourpack as per list below for part A neutral Cured appearanceMatt finish Cured colourPebble Grey, Beige, Golden |
| Density | Mixed Product~1.93 kg/l at +20 °C (EN ISO 2811–1) |
| Compressive Strength | Cured 28 days at +23 °C50 N/mm² (EN 13892–2) |
| Tensile Strength | in Flexure Cured 28 days at +23 °C~10 N/mm² (EN 13892–2) |
| Tensile Adhesion Strength | ≥ 2.5 (2.0) N/mm² (EN 1542) |
| Reaction to Fire | Class B fl -s1 (EN 13501–1) PRODUCT DATA SHEET Sikafloor®-21 PurCem® December 2022, Version 05.01 020814020020000002 |
| Consumption | ~1.9 kg/m² per mm thickness |
| Layer Thickness | Scratch coat1–2 mm Wear or base coat3–6 mm Product Temperature Minimum+10 °C Maximum+35 °C |
| Ambient Air Temperature | Minimum+10 °C Maximum+35 °C |
| Relative Air Humidity | Maximum80 % |
| Dew Point | Beware of condensation. The substrate and uncured applied product must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product. Low temperatures and high hum |
| Substrate Temperature | Minimum+10 °C Maximum+35 °C |
| Substrate Moisture Content | The Product can be installed on substrates with a higher moisture content. No ponding water may be present on the surface. Check for rising moisture. The substrate must be visibly dry and must have a minimum pull-off str |
| Pot Life | +10 °C~40 minutes +20 °C~25 minutes +30 °C~18 minutes +35 °C~15 minutes |
| Waiting Time / Overcoating | Before overcoating the Product allow: Substrate temperatureMinimumMaximum +10 °C24 hours72 hours +20 °C24 hours48 hours +30 °C12 hours24 hours +35 °C12 hours24 hours Note: Times are approximate and will be affected by ch |
| Standards | CE marking and declaration of performance based on EN 13813:2002 Screed material and floor screeds — Screed material — Properties and requirements — Synthetic resin screed material Cleaning test Sikafloor®-21 PurCem, CSM |
Source: Sika Pakistan Product Data Sheet, Sikafloor®-21 PurCem® (December 2022, Version 05.01).
combined21 kg ready to mix units Refer to the current price list for available packaging variations.
The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging. Refer to the current Safety Data Sheet for information on safe handling and storage.
Part A12 months from date of production Part B12 months from date of production Part C9 months from date of production Part D12 months from date of production Always refer to the best before date of the individual packaging.
Follow the official Sika Technical Data Sheet for full application details.
Sikafloor®-21 PurCem® is a self-smoothing multi-component, waterbased colored polyurethane hybrid flooring screed.
combined21 kg ready to mix units Refer to the current price list for available packaging variations.
Part A12 months from date of production Part B12 months from date of production Part C9 months from date of production Part D12 months from date of production Always refer to the best before date of the individual packaging. The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging. Refer to the current Safety Data Sheet for information on safe handling and storage.
Cured 28 days at +23 °C50 N/mm² (EN 13892–2)
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