Sikafloor 31 PurCem - Water Based Polyurethane Cementitious Hybrid Coating
Sikafloor 31 PurCem is a multi-component, water-based coloured polyurethane hybrid flooring coating that provides a matt, impervious, chemical resistant, and hard-wearing surface. It is used as a top and wear coat layer in Sikafloor 22 PurCem anti-slip systems and as a standalone coating.
Uses:
Sikafloor-31 PurCem is ideal as a top and wear coat in:
- Sikafloor 22 PurCem anti-slip flooring systems
It can also be used as a standalone, high-performance coating.
Characteristics / Advantages:
- Good wear resistance
- High mechanical resistance
- Good chemical resistance
- Non-tainting / odourless
- VOC free
- Can be applied to substrates with high moisture content (7 days old or mature damp concrete or 10% moisture pbw)
Approvals / Certificates:
- Synthetic resin screed material (EN 13813:2002, CE marked)
- Coating for surface protection of concrete (EN 1504-2:2004, CE marked)
- EN1186, EN 13130, prCEN/TS 14234 for contact with food stuffs (ISEGA tested)
- British Standards Specifications (BSS) acceptance for use in the UK
- Campden and Chorleywood Food Research Association approved
- Fire classification report (EN 13501-1)
- Liquid water transmission rate test report
- Impact resistance values tested
Product Information:
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Composition: Water-based polyurethane cement hybrid
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Packaging (Ready to Mix Unit):
- Part A: 1.30 kg plastic bottle
- Part B: 1.50 kg plastic bottle
- Part C: 1.60 kg plastic bags
- Pigment: 0.4 kg Plastic tub (if coloured)
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Total: 4.8 kg
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Shelf life: Part A (9 months), Part B (6 months), Part C (6 months) from date of production
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Storage conditions: Dry conditions, +5 °C to +30 °C, in original, unopened packaging
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Appearance and colour: Part A (opaque liquid), Part B (brown liquid), Part C (natural grey powder).
Available RAL colours: Dusty Grey - Traffic Grey - Curtain Call - Beige - Maize Yellow - Oxide Red - Sky Blue - Grass Green
Other RAL colours MTO as per Sikafloor PurCem colour chart
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Density (Mixed A+B+C at +20 °C): ~ 1.25 kg/l ± 0.03
Application Information:
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Consumption: ~ 0.4 – 1.0 kg/m² (depending on the system build-up)
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Ambient air/Substrate temperature: +10 °C min. / +40 °C max.
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Relative air humidity: 85 % max.
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Substrate moisture content: Can be installed on substrates with higher moisture content (visibly dry, min 1.5 N/mm² pull-off strength)
Pot Life:
| Temperature |
Pot Life |
| +10 °C |
~ 35–40 minutes |
| +20 °C |
~ 22–25 minutes |
| +30 °C |
~ 15–18 minutes |
| +35 °C |
~ 12–15 minutes |
Curing time (before overcoating):
| Temperature |
Minimum |
Maximum |
| +10 °C |
16 hours |
72 hours |
| +20 °C |
8 hours |
48 hours |
| +30 °C |
4 hours |
24 hours |
| +35 °C |
4 hours |
24 hours |
Important Considerations:
- Do not apply to PCC mortars that may expand due to moisture.
- Ensure good ventilation during application in confined spaces.
- Protect freshly applied coating from damp, condensation, and direct water contact for at least 24 hours.
- Do not apply to cracked or unsound substrates.
- Allow a minimum of 48 hours after application before placing in service near foodstuffs.
- Discolouration may occur with UV exposure but does not affect performance.
- Avoid scrubbing with water for the first three days after application.
Application Instructions:
Substrate Quality / Pre-treatment: Surface must be clean, dry, free of contaminants, and have a pull-off strength ≥ 1.5 N/mm². Remove all dust and loose material. Test area recommended if unsure.
Mixing: Premix Part A, add pigment and mix until uniform. Add Part B and mix for 30 seconds. Gradually add Part C (aggregate) using a double paddle mixer for at least 2 minutes. Scrape down sides and bottom to ensure complete mixing.
Application: Apply with a short or medium nap roller on smooth screeds or by pouring and spreading with a squeegee followed by back-rolling on broadcasted screeds.
Cleaning of Equipment: Clean all tools with Thinner C immediately after use. Cured material can only be removed mechanically.
Get unbeatable trade prices and fast nationwide shipping on all Sika products. Pick up your order from our store, Sika Wetherill Park in Sydney, or any Sika warehouse nationwide.
Download Sikafloor 31 PurCem Documents
Sikafloor 31 Purcem Product Datasheet
Sikafloor 31 Purcem Product Datasheet - Part A
Sikafloor 31 Purcem Product Datasheet - Part B
Sikafloor 31 Purcem Product Datasheet - Part C
Colour Accuracy Disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.
Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.
