| Sikafloor®-155 WN is a solvent-free, water dispersed primer based on epoxy resin. - Easy and fast to apply
- Especially suitable for highly absorbent substrates
- Water dispersed and odourless
- Can be applied in unventilated areas
- Very good bond strength over its whole application temperature range
- Environmentally friendly
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Usage As a primer and adhesion promoter on properly prepared: - New concrete
- Cementitious screeds
- Hardened concrete
- Existing epoxy floor coatings
- EpoCem levelling layers
As a primer for: - Sikafloor®-81 EpoCem®
- Sikafloor®-20 PurCem® and Sikafloor®-21 PurCem® if required.
Advantages - Easy and fast to apply
- Especially suitable for highly absorbent substrates
- Water dispersed and odourless
- Can be applied in unventilated areas
- Very good bond strength over its whole application temperature range
- Environmentally friendly
Packaging | Part A | 7.5 kg containers | | Part B | 2.5 kg containers | | Part A+B | 10 kg ready to mix units |
Colour Resin - part A | thick coloured paste | Hardener - part B | light yellow translucent emulsion | | Mixed Resin | Oxide red (~ RAL 3009) |
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Technical Information Tensile Adhesion Strength
| >1.5 N/mm2 (failure in concrete),28 days at +23°C / 50% r.h. | (EN 13892-8) |
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Application Information Mixing Ratio Part A : B = 3 : 1 by weight Layer Thickness D.F.T.: ~ 110 - 180 µm per coat Ambient Air Temperature +10°C min. / +35°C max. Relative Air Humidity 85% r.h. max. Dew Point Beware of condensation!
The substrate and uncured floor must be at least 3ºC above dew point to reduce the risk of condensation or blooming on the surface of the applied product.
Substrate Temperature +10°C min. / +35°C max. Substrate Moisture Content Test method: Sika®-Tramex meter, CM - measurement or Oven-dry-method. Always confirm substrate moisture content prior to the application of the primer: - < 4% for impervious resin finishes.No rising moisture according to ASTM D 4263 test (Polyethylene sheet).
- Can be applied on matt - damp green concrete when overcoating with the Sikafloor® EpoCem® range.
Pot Life Temperature | Time | +10°C | ~ 180 minutes | +20°C | ~ 90 minutes | | +30°C | ~ 45 minutes |
Caution: expiry of potlife without visible change. (Above values at 75% r.h.) Curing Time Before applying Sikafloor®-81 onto Sikafloor®-155 WN allow: | Substrate temperature | Min.waiting time | Max.waiting time | | +10°C | 12 hours | 72 hours | | +20°C | 6 hours | 48 hours | | +30°C | 4 hours | 24 hours |
At low temperatures and / or high humidity curing time will increase.
Apply subsequent coats only to tack free primer.
Applied Product Ready for Use Substrate temperature | Foot traffic | +10°C | ~ 12 hours | | +20°C | ~ 12 hours | +30°C | ~ 12 hours |
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The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
