Sika Sikafloor 305W

Non Hazardous
A 2 pack, PUR matt, coloured seal coat to provide a finishing coat as part of the ComfortFloor flooring systems.
Available in 10 Kg
From £732.88 £610.73
In stock
Only %1 left
Product Description

Sikafloor 305W is a low odour, polyurethane floor coating with good UV resistance and is part of the Sika ComfortFloor and ComfortFloor Pro ranges.

Sikafloor-305 W is a two component, PUR matt, coloured seal coat which is designed to provide a finishing coat as part of the ComfortFloor and ComfortFloor Pro flooring systems. It is a water based product with the advantages of being very low odour and has good UV resistance.

Best Uses

Sika Sikafloor-305 W is best used on interior applications, providing a decorative coating in a choice of colour shades. It offers a good resistance to UV light and will not discolour and is non-yellowing, when exposed to sunlight.

  • Water based
  • Very low odour
  • Good UV resistance, non-yellowing
  • Easy to clean
  • Resistant to many chemicals


The substrate must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings and surface treatments, etc. Pull-off strength must be not less than 1.5 N/mm². If in doubt, apply a test area first. 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 application confirm relative air humidity and dew point. Divide the area to be coated into parts for the number of A + B units, to have consumption under control and to know how far to paint with each A + B mixture. The rollers should be wetted in the first area, which should be taken into account by pouring out some more material. The roller will absorb approx 0.3-0.5 kg coating. With a small quantity of mixed product, pre-coat the edge areas with brush and small roller. But never go further ahead than 10 minutes to the regular rolling, to obtain minimal visibility. Within the pot-life (as soon as possible) depending on the temperature 20 min (30°C) – 40 min (10°C) the product is poured and spread out on the substrate under observation of the coverage rate (+/- 130 g/m2). Attention: the end of the pot-life is not noticeable!

After pouring out, the material has to be spread in the pouring direction with the roller and with the same roller cross to pouring direction, covering approx. 1.35m wide not overlapping the former lane, and backwards covering approx 1.45m with an overlap of less than 5cm. Porous spots where the skin of the sub layer is “opened” by sanding such as after repairs, have to be pre-coated a few minutes before arriving there with the regular roll-out to minimise visibility. Then change to a short piled roller and extend the overlap, in a calm way to approx 10 -20cm. See to it that no glittering shiny spots will be left in the finished paint layer caused by paint pick-up from the surface by the roller. A seamless finish can be achieved if a “wet” edge is maintained during application

Surface and Environment

Sikafloor-305 W has been designed for interior application and is ideal for use in public areas such as shopping centres and schools, due to its low odour characteristic. It should be applied to concrete substrates, cement screeds and epoxy mortar. Feel free to contact us if you require more information about this product.


IMPORTANT NOTICE: From 24th August 2023, adequate training is required before industrial or professional use of this product. Training can be accessed at:

Technical Details


  • Fire classification acc. to EN 13501-1, Test report 08-199, Universiteit Gent
  • Coating for concrete protection according to the requirements of EN 1504-2:2004 and the EN 13813:2002, DoP 0208010400500000031041 and provided with the CE-mark
  • Coating for surface protection of concrete according to EN 1504-2:2004, Declaration of Performance 0208010400500000031041, certified by notified factory
    production control certification body 0620 and provided with the CE marking


  • Sika ComfortFloor PS-23
  • Sika ComfortFloor PS-63
  • Sika ComfortFloor PS 65
  • Sikafloor MultiFlex PS 32 UV

Technical Info

Components: Two Part
Type: Water Based Polyurethane Seal Coat
Finish: Matt
Stock Colours:  
Tintable: Available in various colour shades and as substrates for local tinting. Please note, bespoke tints are non refundable / exchangable.
VOC Content: 140.0g per Litre
Volume Solids: 140g per litre
Suitable Substrates: As a matt coloured seal coat for smooth Sika ComfortFloor®-Systems, Sikafloor® polyurethanes or smooth Sikafloor® Economy
line Epoxies
Application Method: See system sheet
Theoretical Coverage: See system sheet
Wet Film Thickness (WFT): See system sheet
Dry Film Thickness (DFT): See system sheet
Induction Time: -
Pot Life: -
Touch Dry: 1 hour at 20°C
Overcoatable: Between 18 - 48 hours at 20°C - Before applying Sikafloor®-305 W on Sikafloor®-330 / 327 / 263SL
Fully Cured:  
Cleaner / Thinner: -
Shelf Life: Part A: 6 months. Part B: 12 months from date of production
Packaging: Available in 10 Kg

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