Sikafloor® PurCem® HB-22

• Very low VOC emissions, as tested externally at Eurofins, according to AgBB guidelines, test report nº 392-2014-00087001A_02
• Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials - Paints and Coatings
• Australian Green Star Rating V3-IEQ-13

• HACCP International Food Grade approved for use in Export Food and Beverage facilities.- Food zone classification -SSZ
• Fire  - Tested to AS/ISO 9239-1:2013 - Pass
• Slip rating - Conforms to AS4586-2013 - P Ratings
• VOC - Australian Standards ASTM D3960  Green Star Building Council - V1 IEQ-13  V1 IEQ-11
• Screed material for floor screeds according to EN 13813:2002, certified by notified factory production control body 0086, certificate of conformity of factory production control 541325, and provided with the CE-mark.
• Polyurethane screed for concrete protection according to the requirements of EN 1504-2:2004 and conforms to the requirements of EN 13813: 2002, certified by Factory Production Control Body, 0086, certificate 541325, and provided with the CE-mark.
• 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, both dated December 6th, 2011.
• 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
• 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

Sikafloor® PurCem® HB-22

As optional body coats Sikafloor®-22/-24 + Quartz sand 0.9–1.4 mm fully blinded broadcast can be used. Please refer to the individual Product Data Sheet.

Water-based polyurethane cement hybrid

~ 4.5-6 mm  /   8-9mm system option for high load and/or high thermal shock

Note: 9mm thick system is constructed by the addition of 5-6 kg- 2mm silica sand to the Sikafloor 21 PurCem base and applied at 7-8mm thickness

Very low content of volatile organic compounds, it fulfils the stringent demands for indoor air quality and low VOC emitting products.

According to Australian Standards Green Star Rating V3-IEQ-13 -     < 1 gram per litre as VOC content per material.

Please refer to Sikafloor® PurCem® chemical resistance guide. Contact Sika technical service for specific information.

Sikafloor® PurCem® HB-22 has excellent resistance to UV exposure for outdoor applications such as loading docks and chemical bunded areas.

Note that there will be discolouration from UV.   Use Sikafloor 33 PurCem UV stable finish coats to provide a colour-fast result .

Please refer to the individual Product Data Sheet

+10 °C min / +40 °C max

80% 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 °C max

Sikafloor® PurCem® HB-22 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.

Refer to individual Data Sheets for 21 - 24 - 31 - 33 and 29 Purcem

Application of Sikafloor® PurCem® HB-22 is varies depending on substrate and ambient conditions.

As a guide the 21 base should be always be continuious and the "wet edge" should be kept alive and joined within approx 1-2 minutes.

If there is a need to stop for a longer period, then a stop line is advised at the nearest joint or a very straight tape line is created.

Application of 31 and 33 PurCem finish coats to Sikafloor® PurCem® HB-22

Degrees               Approx. time

15                            6-7 hours

20                            5-6 hours

25                            4-5 hours

30                            3-4 hours          

Accelerator dosage for faster turn around and colder temperature applications;

21 PurCem 

Addition rate to approx halve the above waiting times - 15 mls.

Addition at approx. 6 degrees C to achieve 3-4 hours    - 25-30 mls.

31 PurCem

Addition rate to approx. halve speed of return to service - 5mls 

33 PurCem

Refer to individual TDS

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

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

Refer to individual product Technical Data sheets for specific mixing and application instructions.

The following key points to observe are to be read in conjunction with those individual product TDS.

• Mixing equipment must be sufficient quality to mix the products thoroughly.
• Supply back up mixing equipment should there be a failure of the existing.
• Use quality pin rakes and trowels for placing the base 21 PurCem.
• Use wide min. 300 mm centre poled rollers along with min 15mm knap sleeves for placing the finish coats.

Substrate must be of sufficient quality to achieve a bond pull value of 1.5Mpa.

Existing resin flooring systems and tiles may be overcoated withSikafloor® PurCem® HB-22 system - Refer to Sika Technical Dept. for Instruction.

I

Ideal surface preparation for Sikafloor® PurCem® HB-22is CSP3 - According to International standardsfor preparation of concretes - Apprx. 1-2mm profile.

Profiles greater than this can be filled with scratch coating of Sikafloor 21 PurCem.

Localised heavy spalls can be filled using extended Sikafloor 21 PurCem - Refer to Sika Techncal Dept. for instruction.

Creating "falls to waste" and re grading/ ramping can be completed with extended Sikafloor 21 PurCem or with Sikafloor 160 Epoxy mortar depending on the scope of the works - Refer to sika Techncal Dept. for instruction.

Ensure mixing area is close to the floor installation.

Have product opened and ready to mix prior to commencing installation.

Strictly observe specific componant mixing times and methods (refer to individual TDS) - Failure to do so will result in uneven results;

• Low product placability/flowabilty.
• Uneven colour and sheen.
• Uneven using and setting times.

Discard mixing buckets regularly to aviod pre-promoted product in the mixes. This will vary depending on ambient and product temps.

As a rule, at 23 Degrees C, discard or clean base product mixing vessels every 30-40 min. Discard finish coat buckets every 3- 4 mixes.

For best results and long-term performance Sikafloor 21 Base coat should be applied with the addition of PurCem pigment, however can be installed without pigment if the client and applicator have no objection to the potential of visible colour difference with deep scratches or damage to the surface, no noticeable difference in application is evident when used without the addition of pigment. 

Apply Sika floor 21 PurCem Evenly at the prescribed thickness without any ridges when joining previous mixes by spreading the new mix and introducing it into the edges of the previous.

For best results and long-term performance Sikafloor 21 Base coat should be applied with the addition of PurCem pigment, however can be installed without pigment if the client and applicator have no objection to the potential of visible colour difference with deep scratches or damage to the surface, no noticeable difference in application is evident when used without the addition of pigment. 

Apply Sika floor 21 PurCem Evenly at the prescribed thickness without any ridges when joining previous mixes by spreading the new mix and introducing it into the edges of the previous.

Spike roll the product to release any air entrained by mixing and to assist in a final even out of the surface.

Time the application of the broadcast aggregate whilst the base can still receive it. This is generally between 2-5 minutes post installation of the base. - Depending on ambient and substrate temps.

Take care to remove as much of the broadcast aggregate as possible before overcoating.   Excess loose aggregate on the floor when applying finish coats will result in uneven texture and colour shading across the finished floor.

Application of the 31 or 33 PurCem finish coats must be carried out using the correct rolling equipment (See Equipment above).

Product must be applied evenly, and wet edges joined promptly.  Squeegee application of the coating then "laying off" with the roller is a recommended way of achieving an even result.  Cross "laying off" assists this further.

Failure to adhere to these methods will likely produce uneven textures and colour in the finished product.

Please refer to Sikafloor®- Cleaning Regime.