Sikafloor 21 PurCem

Sikafloor 21 N PurCem View larger
Typical Coverage (per coat)3 - 11.4kg per m²
Touch Dry12 Hours
The figures stated above are approximate. Please ensure you refer to all datasheets for full application information.

Sikafloor 21 PurCem is a multi-component, medium to high strength coloured polyurethane modified, cement and aggregate screed with self- smoothing properties. From the Sikafloor product range, this has an aesthetic, easy to clean, smooth textured aggregate surface providing medium slip resistance.

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£88.59 + VAT

Sikafloor 21 PurCem is a multi-component, medium to high strength coloured polyurethane modified, cement and aggregate screed with self-smoothing properties. It has an aesthetic, easy to clean, smooth textured aggregate surface providing medium slip resistance and is typically installed at 4.5 to 6mm thick.

Uses:  In areas of medium to heavy loading, abrasion and high chemical exposure, to provide a smooth, flat wearing surface, in process areas such as:

  • Food processing plants, in wet or dry process areas, freezers and coolers, thermal shock areas
  • Chemical plants
  • Laboratories
  • Workshops
  • Suitable for concrete protection providing physical resistance (Principle 5, method 5.1 of EN 1504-9)
  • Suitable for concrete protection providing chemical resistance (Principle 6, method 6.1 of EN 1504-9)

Features and Benefits:

  • Excellent chemical resistance.  Resists a wide range of organic and inorganic acids, alkalis, amines, salts and solvents. Please refer to the Chemical Resistance Chart or consult the Technical Department.
  • Similar coefficient of thermal expansion to concrete, allowing movement with the substrate through normal thermal cycling. It will perform and retain its physical characteristics through a wide temperature range from -40°C (-40°F) up to +90°C (194°F)
  • Bond strength in excess of the tensile strength of concrete.  Concrete will fail first
  • Non taint, odourless
  • VOC free
  • High mechanical resistance.
  • High abrasion resistance resulting from its silica aggregate structure
  • It is possible to apply on to 7 to 10 day old concrete after adequate preparation and with a tensile bond strength in excess of 1.5 MPa (218 psi)
  • Seamless, no additional expansion joints are necessary; simply maintain and extend existing expansion joints up through the Sikafloor PurCem flooring system
  • Easily maintained
  • Wide range of application temperatures +10°C - +40°C

System Structure

Standard System Build-up:
Scratchcoat Sikafloor 21 PurCem
Bodycoat Sikafloor 21 PurCem

Alternative System Build-up:
Primer with Sikafloor 155 WN, Sikafloor 156, Sikafloor 160, Sikafloor 161 - fully blinded with Sika Quartz Sand 0.4 – 0.7mm
Bodycoat Sikafloor 21 PurCem

Approvals & Standards

  • Conforms Section EQ (Indoor Environmental Quality), Credit 4.2 Low-Emitting Materials Paints and Coatings Calculated VOC content ≤ 50 g/l
  • Low TVOC emissions, as tested externally at Eurofins, according to AgBB guidelines, test report nº G10004B.
  • Polyurethane screed for concrete protection according to the requirements of EN 1504-2:2004 and conforms to the requirements of EN 13813: 2002, DoP 02 08 02 02 001 0 000002 1088, certified by Factory Production Control Body, 0086, certificate 541325, and provided with the CE-mark.
  • Fire classification report according to EN 13501-1 from Exova Warrington Fire for Sikafloor 21 N PurCem No.317047, dated 24th of March, 2012
  • Liquid water transmission rate test report from the Technology Centre, Ref. 15456 dated January 25th, 2012
  • 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®)
  • Impact resistance values tested at PRA, Ref. nº 75221-151, dated January 11th, 2012
  • Slip resistance properties according to DIN 51130 tested at MPI (Materialprüfung und Entwicklung), test reports refs. Nº 12-6639-S/12 and 12-6641-S/12, dated August 7th, 2012.
  • Thermal expansion coefficient and freeze-thaw cycle resistance performed at RWTH / IBAC, report nº M-1614 dated May 29th, 2012.

Concerning contact with foodstuffs, it conforms to the requirements of:

  • EN1186, EN 13130, and prCEN/TS 14234 standards, 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, according to test report by ISEGA, 32758 U11 and 32759 U11, both dated December 6th, 2011. (Tests performed on Sikafloor®
  • 20/21/22/29 and 31 PurCem® in standard and LP versions)
  • 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, Ref. S/REP/125424/1a and 2a, dated 8th February, 2012

All other values indicated are internal test results.

Please Note: All available colours in the PurCem range are approximate to the RAL references NOT exact matches.

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Free delivery on orders over £75 (terms & conditions)

• Deliveries will be made within 3 working days (standard delivery)
• You must be UK mainland based for the free delivery offer.
• Postcodes listed are excluded from the free delivery and priced below.

Please note: deliveries will need to be signed for at the point of delivery.

UK Mainland OnlyUp to £75.00£75.01 +
Standard (2/3 working days)£8.00FREE
Next Day£15.00£15.00
Next day before 09:00am£30.00£30.00
Next day before 10:30am£25.00£25.00
Next day before 12:00pm£20.00£20.00
Saturday Delivery£35.00£35.00

£25 (Standard 2-3 Day Delivery Only)

AB30, AB31, AB32, AB33, AB34, AB35, AB36, AB37, AB38, AB44, AB45, AB46, AB47, AB48, AB49, AB50, AB51, AB52, AB53, AB54, AB55, AB56, FK, G83, IV, KW1, KW2, KW3, KW4, KW5, KW6, KW7, KW8, KW9, KW10, KW11, KW12, KW13, KW14, PA, PH, HS, KA27, KA28, ZE

£35 (Standard 2-3 Day Delivery Only)


£50 (Standard 2-3 Day Delivery Only)


Please note that all carriage prices are quoted without V.A.T. at the current rate.

Scottish Islands - outside standard distribution area, please contact us for a quote.

There may be an exception for heavy goods when purchased in quantity where we will contact you to advise any additional charges.

Next Day delivery and Saturday Service is available on stocked items for orders received before 11:00am only.

Because of the nature of our products, we use specially selected carriers to ensure safe and prompt delivery to you.

Please note: Any time or date named by Rawlins Paints Limited for delivery is given and intended as an estimate only and Rawlins Paints Limited shall not be liable to make good any damage or loss whether arising directly or indirectly out of a delay in delivery. Deliveries are made using a reliable nationwide carrier. Although over 99% of consignments arrive on time, we recommend that no labour is employed to undertake work until materials have arrived on site.

Sikafloor 21 N PurCem TDS


Sikafloor 21 N PurCem MSDS


Sikafloor 21 N PurCem DOP


Sikafloor PurCem Brochure

Whilst every effort is made to ensure our data sheets are up to date, we advise you check the latest revision directly with the manufacturer to ensure you have the most current version.
E J Rawlins & Co. Ltd trading as Rawlins Paints make available product data sheets and information in good faith but without warranty. We do not accept liability for any errors or omissions contained within the data sheets or any outdated versions.