Description
Matt glazes handle light differently from gloss, and on a finger relief the difference is obvious. Instead of bouncing highlights off every finger, Dune Kit-Kat Mosaic Tile in Sky Matt Finish lets daylight fall softly into the concave fingers, so the vertical lines show as gentle shadow. The light blue glaze grades slightly paler along each finger, over 8mm porcelain measuring 115x231mm.
Dune’s product page for the matt Kit-Kat colours explains that shadow: Dune describes the relief as smooth and concave, and the series as an endless mosaic effect inspired by Japanese aesthetics. Sky Matt records E ≤ 0.5% water absorption, over 35 N/mm² breaking strength, frost and crazing compliance, class A pool water chemical resistance and stain resistance 5.
Technical Specifications
| Format | 115x231mm (11.5×23.1cm) |
|---|---|
| Thickness | 8mm |
| Finish | Matt |
| Material | Porcelain |
| Faces (graphic variation) | 6 |
| Water absorption (UNE EN ISO 10545-3) | E ≤ 0.5% |
| Chemical resistance (UNE EN ISO 10545-13) | LA |
| Swimming pool chemical resistance (UNE EN ISO 10545-13) | A |
| Scratch hardness (UNE EN 67-101) | 6 |
| Crazing resistance (UNE EN ISO 10545-11) | Complies |
| Resistance to stains (UNE EN ISO 10545-14) | 5 |
| Breaking strength (UNE EN ISO 10545-4:9) | >35 N/mm² |
| Frost resistance (UNE EN ISO 10545-12) | Complies |
| Pieces per box | 26 |
| Coverage per box (m²) | 0.69 |
| Weight per box (kg) | 11.86 |
Where to Use
- Shower and bathroom walls washed by natural light
- Splashbacks beneath windows or skylights
- Courtyard and balcony walls, supported by the frost result
- Pool walls, which Dune marks as a use (not pool floors or steps, reserved for Class 3 slip rated tiles)
- Steam room walls, listed by Dune for high vapour condensation
- Curved walls and columns in cafés and bars
How to Apply
- Prepare first: solid, level, dry and clean, with moisture under 2% and irregularities above 2mm corrected.
- Adhesive choice: fix porcelain with C2 cementitious adhesive, trialling a couple of Sky pieces first.
- Bed each piece: comb a roughly 3mm layer with a number 3 notched trowel and press tiles firmly into soft adhesive.
- Joint and align: 2mm minimum, 3mm on walls with thermal movement, piece gaps equal to the pre-cuts, self levelling spacers, offsets within 25%.
- Grout and clean up: grout every finger line fully, using epoxy grout in wet areas, and clean immediately without abrasives.
Colour and Finish
Sky Matt comes with 6 faces, shade variation and an irregular texture, so the blue moves slightly between pieces; mix boxes while fixing. Under side light the surface picks out the fingers through shadow rather than shine. Grout tone shifts the result, so try a small test panel. Other matt colours include White, Grey, Anise Green and Lilac, alongside glossy Kit-Kat colours.
Important Notes
- Dune explains Kit-Kat and other pre-cut tiles may have small pores in the grooves, concealed by grout and helpful to its adhesion.
- Order the whole quantity together to avoid shade differences between batches.
- Pool water class A is a chemical result, not a slip rating; with no slip test and floors marked NO, Sky Matt is for walls.
- Confirm colour, finish and thickness before fixing; Dune does not accept claims on installed material.
- Results shown are Dune’s published datasheet values, provided for information.
Frequently Asked Questions
Can Kit-Kat Sky Matt be used in a pool?
Only on pool walls, which Dune marks as a use. It has no slip rating, so it is not for pool floors or steps; its class A pool water result is a chemical test only.
How many Kit-Kat Sky Matt tiles are in a box?
Each box contains 26 pieces covering 0.69 m², weighing 11.86 kg.
Is Kit-Kat Sky Matt frost resistant?
Yes. It complies with frost resistance under UNE EN ISO 10545-12, and Dune marks outdoor walls as a use.


