Sikafloor 405
  • Sikafloor 405

Sikafloor 405

Sikafloor 405 is a one part, pigmented, highly elastic, solvent containing, UV resistant, moisture triggered curing polyurethane resin coating.  Sikafloor 405 is a slip resistant, waterproof, crack-bridging coating for concrete, cementitious screed substrates and tiles.

  • Current colour: RAL1015 - Light Ivory
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  • RAL1015 - Light Ivory
  • RAL7015 - Slate Grey
  • RAL7032 - Pebble Grey
  • RAL7035 - Light Grey
  • RAL7042 - Traffic Grey A
  • RAL9010 - White
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Sikafloor 405 is a one part, pigmented, highly elastic, solvent containing, UV resistant, moisture triggered curing polyurethane resin coating. Sikafloor 405 is a slip resistant, waterproof, crack-bridging coating for concrete, cementitious screed substrates and tiles.


  • For light to medium mechanical exposure
  • For balconies, terraces, footbridges, stairways, galleries etc.

Features and Benefits:

  • Moisture triggered
  • Highly elastic
  • Crack-bridging
  • Waterproof
  • Water vapour permeable
  • UV resistant, non-yellowing
  • Weather resistant
  • Abrasion resistant with normal use
  • Slip resistant
  • Fast cure
  • Excellent adhesion

For more details please download the product data sheet from the 'DATASHEETS' tab above.

Product Details

Data sheet

Typical Coverage (per coat)
0.9 - 3m² per litre
Touch Dry
6 Hours
Brush, Roller

questions Hazel Barnes on 09/02/2019

Can I use this paint as a finishing paint on a tiled balcony which is waterproof but discoloured?


We would instead recommend the use of Sikafloor 161 as the primer and Sikafloor 420However you need to ensure that the tiles are well bonded and not breaking up, otherwise you will need to remove them. Lightly abrade the tiles to remove the sheen and to provide a griping texture. Download the Additional System Data Sheet (MB-25) from the product page for more details.

questions Steven johns on 15/03/2017
Question: I am looking to paint a long outdoor concrete balcony in France. The current grey paint has been eroded by water drawing from the food in winter and hot sun in summer. The balcony goes all round the house some south and west facing in hot sun other areas east and damper. Would silks 405 be the best paint? The current finish is moth grey and looks smart in places. I would appreciate your advice kind regards

Sikafloor 405 is ideal for balcony areas but you must read the product TDS (Technical Data Sheet) available to download from the 'DATASHEETS' tab on the product page. This goes through preparation, systems, number of coats, etc.

We have also written an article on our blog on some of the most popular Sika balcony systems called Sikafloor Balcony Flooring Systems which may have some more useful information for you.

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