Sika Sikafloor 155 WN

Part A: Non Hazardous, Part B: UN3082 (Class: 9, Pk Grp: III)
A solvent-free, water dispersed floor primer based on epoxy resin.
Available in 10 Kg in RAL 3009 Oxide Red
£277.48 £231.23
In stock
Product Description

Sika Sikafloor 155 WN is a solvent-free, water dispersed floor primer based on epoxy resin.

Best Uses

Sika Sikafloor 155 WN may only be used by experienced professionals. Sika Sikafloor 155 WN is suitable as a primer and adhesion promoter on properly prepared new concrete, cementitious screeds, hardened concrete, existing epoxy floor coatings, EpoCem levelling layers.

Sika Sikafloor 155 WN is also formulated as a primer for Sikafloor 81 EpoCem, Sikafloor 20 PurCem and Sikafloor 21 PurCem if required.

  • 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


The concrete substrate must be sound and of sufficient compressive strength (minimum 25 N/mm2) with a minimum pull off strength of 1.5 N/mm2. The substrate can be damp but must be free of standing water and free of all contaminants such as oil, grease, coatings and surface treatments etc. If in doubt, apply a test area first.

Concrete substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and achieve an open textured
surface. Weak concrete must be removed and surface defects such as blow holes and voids must be fully exposed. Repairs to the substrate, filling of blowholes / voids and surface levelling must be carried out using appropriate products from the Sikafloor®, SikaDur® and Sikagard® range of materials.

All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush or vacuum.

Prior to mixing, thoroughly stir part A (resin) well, then add all of part B (hardener) and mix both liquid parts thoroughly for one minute until a uniform mix has
been achieved. When parts A and B have been mixed for one minute for the first coat, slowly add 10% of clean water while mixing continues for a further two minutes, until a fully homogenous mix has been achieved. For the second coat, do not add additional water, but continue the mixing for a total of 3 minutes until a fully homogenous mix has been achieved. To ensure thorough mixing of both coats, after the minimum 3 minutes mixing, pour the mixed material into another container carefully scraping the sides and mixing paddle with a spatula and then mix again briefly to ensure complete and thorough mixing. Excessive mixing must also be avoided to minimise air entrainment.

Mixing Tools -  Low speed electric stirrer(~ 300 - 400 rpm)
Apply Sikafloor®-155 WN by suitable brush, roller or trowel and overwork with a roller.

Technical Details


Sika Sikafloor 155 WN is used within the following Sika systems:

  • Sikafloor MultiDur EB-24 ECC
  • Sikafloor MultiDur EB-14 ECC
  • Sikafloor MultiDur ES-14 ECC
  • Sikafloor MultiDur ET-14 ECC

See Data Sheets tab for System sheet downloadable PDF.

Technical Info

Components: Two Pack
Type: Water dispersed
Stock Colours: RAL 3009 Oxide Red
Tintable: No
VOC Content: 140 g/L
Volume Solids: 56%
Suitable Substrates: Suitable as a primer and adhesion promoter on properly prepared new concrete, cementitious screeds, hardened concrete, existing epoxy floor coatings, EpoCem levelling layers
Application Method: Brush, Roller or Trowel
Theoretical Coverage:

0.3 - 0.5 Kg per m2 per coat. (2 - 3.3 m2 per kg per coat).
Sikafloor®-155 WN, diluted with water 10% by weight for the first coat.
Undiluted for the second coat.

This figure is theoretical and does not include for any additional material required due to surface porosity, surface profile, variation in level or wastage, etc.

Wet Film Thickness (WFT):
Dry Film Thickness (DFT): 110 - 180 microns per coat
Induction Time: -
Pot Life: 90 minutes at 20°C
Surface Dry:
Fully Cured:
Cleaner / Thinner: Water
Shelf Life: 12 months from date of production
Packaging: Available in 10 Kg

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

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