Sikafloor®-21 PurCem®

• 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 report No. G10004B.

• Synthetic resin screed material according to 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-marking
• Coating for surface protection of concrete according to EN 1504-2:2004, Declaration of Performance 02 08 02 02 001 0 000002 1088, certified by Factory Production Control Body, 0086, certificate 541325, and provided with the CE-marking
• 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, 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.

Water-based polyurethane cement hybrid

Original, unopened and undamaged sealed packaging, in dry conditions at temperature between +5 C° and +30 °C.

Part A (pre-tinted)+B+C mixed: ~ 1.93 kg/l ± 0.03 (at +20 °C)

Part A (neutral)+B+C+D mixed: ~ 1.93 kg/l ± 0.03 (at +20 °C)

• Part A (pre-tinted) : B : C = 1 : 1 : 5 (packaging size = 3.0 : 3.0 : 15) by weight
• Part A (neutral) : B : C : D = 0.87 : 1 : 5 : 0.13 (packaging size = 2.615 : 3.0 : 34 : 0.385) by weight

Mix full units only.

Scratch coat: 1–2 mm
Base- and wear coat: 3–6 mm

+10 °C min. / +40 °C max.

85 % max.

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.

+10 °C min. / +40 ºC

Can be installed on substrates with higher moisture content. No ponding water. Check rising moisture. The substrate needs to be visibly dry and have adequate pull-off strength min 1.5 N/mm².

Before overcoating Sikafloor®-21 PurCem® allow:

Times are approximate and will be affected be changing ambient and substrate conditions, particularly temperature and relative humidity.

If used other primers than Scratch Coat refer the Technical Data Sheet of the respective product. Make sure that the primer and the scratch coat layer is fully cured before application of Sikafloor® PurCem® previous layer.

~ 1.93 kg/m²/mm

Premix part A with a low speed electric stirrer and then add part B and mix for 30 seconds. For the colourpack version, premix part A neutral with a low speed electric stirrer and add part D to it. Mix until a uniform colour is achieved. Add part B and mix for 30 seconds.

Use a double paddle (axis) mixer and gradually add part C (aggregate) to the mixed resin. Allow part C to blend for further 2 minutes minimum, to ensure complete mixing and a uniform moist mix is obtained. During the operations, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once (parts A+B+C) to ensure complete mixing.

Mixing Tools
Use a low speed electric stirrer (300 - 400 rpm) for mixing parts A and B. For preparation of the mortar mix use a double paddle mixer.

Prior to application, confirm substrate moisture content, relative humidity and dew point. As a scratch coat Sikafloor®-21 PurCem® can be applied using a steel trowel. As a body coat Sikafloor®-21 PurCem® can be applied using a toothed trowel or pin screed, to the desired thickness, or a steel trowel. Remove air with a spike roller.
For further details please refer to the related system data sheet.

Clean all tools and application equipment with Thinner C immediately after use. Hardened / cured material can only be mechanically removed.