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Sikafloor® PurCem® HS-21

Self-smooting, medium to heavy duty, matt finish polyurethane cement hybrid flooring system

Sikafloor® PurCem® HS-21 system is made with polyurethane cement technology and is part of the Sikafloor® PurCem® flooring range. The Sikafloor® PurCem® HS-21 system is especially designed to withstand chemical attack, high impact and can be used in wet and dry processing plants.
The system is composed of an highly durable polyurethane cement body coat, it has an aesthetic, easy to clean and smooth surface, providing medium slip resistance. Is typically installed at 4 to 6 mm thick. Suitable for use in hot and tropical climatic conditions.

  • High chemical resistance. Resists a wide range of organic and inorganic acids, alkalis, amines, salts and solvents
  • Good resistance to fire
  • High mechanical and abrasion resistance
  • Easy application
  • Easy to clean and maintain
  • Seamless, non taint, odourless
  • Smooth, matt surface
  • Tolerant to moisture in the substrate
  • Very good life cycle cost performance
 
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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 fire
  • High mechanical and abrasion resistance
  • Easy application
  • 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, grass green, pebble grey, dusty grey, slate grey, traffic grey

Appearance

Smooth surface, matt finish

System Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • Certified as suitable for use in food and beverage facilities that operate in accordance with a HACCP based Food Safety Programme.
  • Compliant with USDA flooring requirements
  • Canadian Food Inspection Agency acceptance for use in food plants in Canada.
  • British Standards Specifications (BSS) acceptance for use in the UK. Campden and Chorleywood Food Research Association, reference S/REP/125424/1a and 2a, dated 8th February, 2012
  • Fire classification report according to EN 13501-1 from Exova Warrington Fire for Sikafloor®-21 PurCem® No.317047, dated 24th of March, 2012
  • Liquid water transmission rate test report from the Technology Centre, reference 15456 dated January 25th, 2012
System information

Shelf life

Please refer to the individual Product Data Sheet

Storage conditions

Please refer to the individual Product Data Sheet

System Structure

Sikafloor® PurCem® HS-21

02-en-PurCem_2_s_m-1000

Layer

Product

1. Scratch coat

Sikafloor®-21 PurCem® (AE)

2. Body coat

Sikafloor®-21 PurCem® (AE)

As optional primers Sikafloor®-161 + quartz sand 0.4–0.8 mm broadcast to excess can be used. Please refer to the individual Product Data Sheet.

Composition

Water-based polyurethane cement hybrid

Nominal Thickness

~4 - 6 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.
Technical Information

Shore D Hardness

~80-85

Abrasion Resistance

Class “Special” Severe abrasion resistance

AR 0.5

Class A6

<  900 mg (H-22 / 1000 / 1000)

Resistance to Impact

Class III (≥ 20 Nm)

2 pounds / 30 inches (3 mm thick)

Compressive Strength

> 40 N/mm2 after 28 d at +23 °C / 50 % r.h.

(BS EN 13892-2)

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.

Temperature Resistance

4 mm

6 mm

-15 °C to +70 °C

-25 °C to +80 °C

The product is resistant to short term contact with temperatures of +90 °C, mainly during the cleaning regimes.

 

Application

Application Information

Applied Product Ready for Use

Temperature

Foot traffic

Light traffic

Full cure

+10 °C

~20 h

~34 h

~7 d

+20 °C

~12 h

~16 h

~4 d

+30 °C

~8 h

~14 h

~3 - 4 d

Note: Times are approximate and will be affected by changing ambient conditions and substrate conditions
Application consumption

Consumption

Layer

Product

Consumption

1. Scratch coat

Sikafloor®-21 PurCem® (AE)

~2.9 kg/m2 (1.5 mm)

2. Body coat

Sikafloor®-21 PurCem® (AE)

~1.9 kg/m2/mm

Consumptions are theoretical and do not include any wastage, additional material need due to porosity, substrate profile etc.
Application steps

CLEANING

Please refer to Sikafloor®- Cleaning Regime.

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