R05 Gray Cold Rock: dark grey KORDEKO flexible stone with white and black flecks

Some grey shades function simply as a backdrop. Others create an architectural mood in their own right. R05 Gray Cold Rock belongs to the latter category. It is not an "ordinary grey" but a deeper, more layered tone that conveys the mass, texture and natural irregularity of stone.

In KORDEKO's current range, R05 Gray Cold Rock belongs to the ROCK STONE series and is described as grey with white and black mineral flecks. These inclusions give the surface a more vibrant and visually rich appearance rather than a flat one.

Grey that does not look boring

R05 has an important advantage: it remains understated without disappearing into the facade. White and dark mineral inclusions make the shade more complex, while the natural stone relief reinforces the effect. The facade therefore changes its appearance with the light:

• in overcast weather it looks cohesive and composed;
• in side lighting the texture becomes more pronounced;
• in sunlight the depth of colour becomes more visible;
• in the evening the surface takes on a stricter, more graphic character.

This material suits projects that call for a restrained facade without the monotony of a plain grey wall. How dark cladding behaves in the sun, heating, fading and installation, is covered in a separate article.

R05 for modern architecture

Gray Cold Rock is particularly appropriate where architecture is built around form, proportion and clean lines. The shade does not overload the building; it helps emphasise its geometry. R05 works especially well with:

• panoramic glazing;
• black or graphite frames;
• white plaster;
• natural wood;
• metal elements;
• concrete and glass surfaces.

This makes it suitable for minimalist private houses, urban villas and contemporary commercial buildings alike.

A strong option for contrasting facades

While R04 can be seen as a more versatile grey, R05 looks denser and more expressive. It is especially effective where a noticeable contrast between different parts of a building is needed. For example, Gray Cold Rock can be used for:

• the plinth;
• the ground floor;
• the entrance area;
• an accent wall;
• the terrace area;
• the garage volume;
• columns and portals.

On a light-coloured house it creates a more cohesive and prestigious impression. On dark architecture it helps preserve depth without turning the facade into one continuous black mass. Both options can be tried on a whole house in the 3D facade constructor.

R05 where practical expression matters

For some models, colour is the main feature. With Gray Cold Rock, it is the combination of colour and texture. This makes it particularly useful where the goal is not decoration for its own sake but a material that looks substantial, confident and appropriate over time. R05 can therefore be considered for:

• private houses;
• office buildings;
• hotels;
• restaurants;
• fences and entrance areas;
• public spaces;
• facades with extensive glazing and metalwork.

Its appeal does not depend on bright colours or fleeting trends but on its refined texture and restrained palette.

Interiors with stone-like depth

R05 works well both outdoors and indoors. In interiors it helps create a more architectural space where the wall becomes an integral part of the composition rather than just a background. These tiles can be used for:

• TV feature walls;
• living-room accent walls;
• home offices;
• entrance halls;
• staircases;
• fireplace areas;
• reception desks;
• modern cafes and restaurants.

Gray Cold Rock is especially interesting under directional lighting: light emphasises the relief and mineral variation, making the surface look deeper and more refined.

The stone effect without heavy cladding

R05 gives the impression of heavy stone, but the KORDEKO system is considerably lighter than conventional cladding. The technical description specifies a weight of approximately 4 kg/m² and a thickness of about 2.5–5 mm, depending on the series and texture.

At the same time, KORDEKO flexible tile (PletaFlex) is designed not only for standard walls but also for more complex architectural shapes. KORDEKO documentation specifically mentions columns, arches, corners and other non-standard elements.

R05 as part of an insulated facade

For many projects, both appearance and energy efficiency matter. Cladding is therefore increasingly considered as part of the complete facade system rather than as a separate exterior layer.

If facade insulation is planned in advance, R05 Gray Cold Rock can serve as the finishing layer, completing the exterior system and giving the building a stone-like appearance. KORDEKO materials describe flexible tile as a compatible solution for facade thermal insulation systems; the European assessment documents for such systems (EOTA) evaluate the insulation, reinforcement and finish as one whole.

This approach is especially attractive to those who want something more expressive and visually enduring than ordinary plaster.

Why R05 is chosen for character, not just colour

Gray Cold Rock is intended for those seeking not just a grey facade but a material with architectural depth. It is strict but not boring, calm but not impersonal, restrained yet highly expressive both up close and across large surfaces.

R05 suits projects where the facade should look modern, substantial and confident, without unnecessary visual noise but with the impression of genuine material.