Sikafloor®-21 PurCem® is a multi-component, waterbased coloured polyurethane hybrid screed with selfsmoothing properties. It has a smooth, matt, impervious, hard wearing surface and is typically installed at 3
– 6 mm thickness.
Sikafloor®-21 PurCem® may only be used by experienced professionals.
Sikafloor®-21 PurCem® is used as a scratch coat
primer, basecoat and wear coat layer in Sikafloor®PurCem® system build ups, in areas of medium to heavy
loading, high chemical exposure and abrasion.
CHARACTERISTICS / ADVANTAGES
▪ Good chemical resistance
▪ High mechanical resistance
▪ High glass transition point
▪ Non tainting /odourless
▪ VOC free and environmental friendly
Can be applied to substrates with high moisture content (7 days old or mature damp concrete)
Conformity with LEED v4 MRc 2 (Option 1): Building
Product Disclosure and Optimization – Environmental Product Declarations
▪Conformity with LEED v4 MRc 4 (Option 2): Building
Product Disclosure and Optimization – Material Ingredients
▪Conformity with LEED v2009 IEQc 4.2: Low-Emitting
Materials – Paints and Coatings
▪Complies AgBB for use in in indoor environment. Test
APPROVALS / STANDARDS
▪ 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
▪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).
▪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
▪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, Ref. 15456 dated January 25th,
▪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 / IBA