Sikafloor® PurCem® HM-20
Sikafloor® PurCem® HM-20 is made with polyurethane cement technology and is part of the Sikafloor® PurCem® flooring range. Sikafloor® PurCem® HM-20 is a trowel applied coloured modified polyurethane mortar screed resin suitable for floors subject to temperature shocks and heavy loading, abrasion and chemical exposure. It has a textured aggregate surface providing medium to heavy profile slip resistance and is typically installed at 6 to 9 mm thick.
- High chemical resistance. Resists a wide range of organic and inorganic acids, alkalis, amines, salts and solvents
- Good resistance to high temperature changes
- Steam cleanable at 9 mm thick
- High mechanical and abrasion resistance
- Easy application. Normally, no concrete primer or sealer required
- Fluid consistency requires less labour to install than conventional heavy duty modified PU trowel grade screeds
- Easy to clean and maintain
- Seamless, non-taint, odourless
- Smooth, matt surface
- Tolerant to moisture in the substrate
- Very good life cycle cost performance
Usage
- Food processing plants, in wet or dry process areas, freezers and coolers, thermal shock areas
- Chemical plants
- Laboratories
- Workshops
Advantages
- High chemical resistance. Resists a wide range of organic and inorganic acids, alkalis, amines, salts and solvents
- Good resistance to high temperature changes
- Steam cleanable at 9 mm thick
- High mechanical and abrasion resistance
- Easy application. Normally, no concrete primer or sealer required
- Fluid consistency requires less labour to install than conventional heavy duty modified PU trowel grade screeds
- Easy to clean and maintain
- Seamless, non-taint, odourless
- Smooth, matt surface
- Tolerant to moisture in the substrate
- Very good life cycle cost performance
Packaging
Please refer to the individual Product Data Sheet
Colour
Beige, Maize Yellow, Oxide Red, Signal Red, Sky Blue, Pastel Blue, Grass Green, Pebble Grey, Traffic Grey, Dusty Grey, Slate Grey, Grey White. (Always check availability.)
Appearance
Textured surface, matt finish
System Details
ENVIRONMENTAL INFORMATION
- Very low VOC emissions, as tested externally at Eurofins, according to AgBB guidelines, test report 392-2014-00087003A_03.
- Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials - Paints and Coatings
APPROVALS / STANDARDS
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Screed material for floor screeds according to EN 13813:2002, Declaration of Performance 02 08 02 02 001 0 000002 1088, and provided with the CE-marking.
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Surface protection coating for concrete according to EN 1504-2:2004, Declaration of Performance 02 08 02 02 001 0 000002 1088, certified by notified factory production control body 0086, certificate of conformity of factory production control 541325, and provided with the CE-marking.
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Conforms to the requirements of: EN1186, EN 13130, prCEN/TS 14234 and the Decree on Consumer Goods, representing the conversion of directives 89/109/EEC, 90/128/EEC and 2002/72/EC for contact with food stuffs. Test report by ISEGA, 32758 U11 and 32759 U11.
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Certified as suitable for use in food and beverage facilities that operate in accordance with a HACCP based Food Safety Programme.
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Compliant with USDA flooring requirements
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Canadian Food Inspection Agency acceptance for use in food plants in Canada.
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Taint potential. British Standards Specifications (BSS) acceptance for use in the UK. Campden and Chorleywood Food Research Association, Ref. S/REP/125424/1a and 2a, dated 8th February, 2012
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Fire classification report according to EN 13501-1 from Exova Warrington Fire for Sikafloor®-20 PurCem® No.317045, dated 24th of March, 2012
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Liquid water transmission rate test report from the Technology Centre, Ref. 15456 dated January 25th, 2012
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Abrasion resistance tests performed by Face Consultants Ltd., according to BS 8204-2:2003, report ref. FC/12/3850, dated January 17th, 2012. (Tests performed on Sikafloor® -20/21 PurCem®)
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Impact resistance values tested at PRA, Ref. nº 75221-151, dated January 11th, 2012
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Slip resistance properties according to DIN 51130 tested at MPI (Materialprüfung und Entwicklung), test reports refs. Nº 13 1017-SRT/13, dated June 25th, 2013.
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Cleanibility. Clean Room Suitable Material (Riboflavin test) test report no. SI 1403-695, Fraunhofer Institute for Manufacturing and Engineering and Automation IPA.
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Biological resistance. Clean Room Suitable Material test report no. SI 1403-695, Fraunhofer Institute for Manufacturing and Engineering and Automation IPA.
Shelf Life
Please refer to the individual Product Data Sheet
Storage Conditions
Please refer to the individual Product Data Sheet
System Structure
Sikafloor® PurCem® HM-20
| Layer | Product |
| 1. Scratch coat (optional) | Sikafloor®-21 PurCem® |
| 2. Body coat | Sikafloor®-20 PurCem® |
As optional primers Sikafloor®-156/-161 + quartz sand 0.4–0.8 mm (or Sika® Aggregate-505) broadcast to excess can be used. Please refer to the individual Product Data Sheet.
Composition
Water-based polyurethane cement hybrid
Nominal Thickness
~ 6-9 mm
Volatile organic compound (VOC) content
Very low content of volatile organic compounds, it fulfils the stringent demands for indoor air quality and low VOC emitting products AgBB.
Water Absorption
| 0 % | (CP BM2/67/2) |
Shore D Hardness
| ~85 | (ASTM D 2240) |
Abrasion Resistance
Class “Special” Severe abrasion resistance |
| AR 0.5 |
| Class A6 |
| < 3000 mg (H-22/1000/1000) |
Resistance to Impact
| Class II (≥ 20Nm) |
| 2 pounds/30 inches (3 mm thick) |
Indentation
0 | (MIL – PFR 24613) |
Compressive Strength
| >60 N/mm2 after 28 days at +23 °C / 50 % r.h. |
Tensile Adhesion Strength
| Concrete failure | (EN1542) |
Reaction to Fire
Bfl-s1 | (EN 13501-1) |
Chemical Resistance
Please refer to Sikafloor® PurCem® chemical resistance guide. Contact Sika technical service for specific information.
Thermal Resistance
| 6 mm | 9 mm |
| -25 °C to +80 °C | -40 °C to +120 °C |
Sikafloor® PurCem® HM-20 is fully resistant to liquid spillage and discharge. Sikafloor® PurCem® HM-20 is designed to withstand thermal shock caused by steam cleaning when thickness is 9 mm.
Permeability to Water Vapour
0.148 g/h/m2 (6.1 mm) | (ASTM E-96) |
Capillary Absorption
< 0.016 kg/(m2×h0,5) | (EN 1062-3) |
USGBC LEED Rating
Conforms Section EQ (Indoor Environmental Quality), Credit 4.2 Low-Emitting Materials Paints and Coatings. Calculated VOC content ≤ 50 g/l
Coefficient of Friction
Rubber: | 1.25 |
Steel: | 0.4 |
Skid / Slip Resistance
R 11 |
SRV Dry | SRV Wet |
70 | 65 |
Application
Product Temperature
Please refer to the individual Product Data Sheet
Ambient Air Temperature
+10 °C min / +40 °C max
Relative Air Humidity
80 % max
Dew Point
Beware of condensation!
The substrate and uncured floor must be at least 3 °C above dew point to reduce the risk of condensation or other disturbance of the surface on the floor finish.
Substrate Temperature
+10 °C min / +40 °C max
Substrate Moisture Content
Sikafloor® PurCem® HM-20 can be installed on substrates with higher moisture content. The substrate needs to be visibly dry and have an adequate pull-off strength min 1.5 N/mm2. No ponding water. Check for rising moisture.
Applied Product Ready for Use
| Temperature | Foot traffic | Light traffic | Full cure |
| +10 °C | ~24 hours | ~36 hours | ~7 days |
| +20 °C | ~12 hours | ~18 hours | ~5 days |
| +30 °C | ~8 hours | ~15 hours | ~3–4 days |
Note: Times are approximate and will be affected by changing ambient conditions and substrate conditions
Consumption
| Layer | Product | Consumption |
| 1. Scratch coat (optional) | Sikafloor®-21 PurCem® | ~1.0–3.0 kg/m2 |
| 2. Body coat | Sikafloor®-20 PurCem® | ~2.0 kg/m2/mm |
Consumptions are theoretical and do not include any wastage, additional material need due to porosity, substrate profile etc.
CLEANING
Please refer to Sikafloor®- Cleaning Regime.