Background. Caesarstone was founded in 1987 in Kibbutz Sdot Yam in Israel and is regarded as one of the pioneers of industrial engineered quartz slab production. The company produces its slabs by the Bretonstone® vacuum vibro-compaction process and has been among the globally leading brands in this material segment for decades. The version presented here, 4011 Cloudburst Concrete, comes from the brand's Concrete series (4xxx coding), which in design terms is aimed at raw, ground fair-faced concrete and industrial render impressions. Within it, Cloudburst Concrete occupies the lightest, most delicate position – the design counterpart to the darker fair-faced concrete grades such as 4120 Raven or 712B Wet Concrete.
Material build-up. A classic Caesarstone quartz slab consists of around 90–93 % natural quartz (SiO₂), about 7–10 % polymer binder on a polyester resin base as well as pigments and mineral additives. Quartz has a Mohs hardness of 7 (against calcite marble at Mohs 3) – which makes engineered quartz slabs considerably more scratch-resistant, more acid-resistant and free of pores. In spring 2024, alongside the classic quartz line, Caesarstone brought the Mineral™ line to market, in which a large part of the crystalline quartz was replaced by other mineral aggregates – this change is a direct response to the global discussion of silicosis risk during fabrication; the grade documented here, 4011 Cloudburst Concrete, corresponds to the historical quartz mix.
The 4011 Cloudburst Concrete version. Cloudburst Concrete is the lightest, most delicate grade in the Concrete series. The ground tone is a pale, slightly warm-toned cream white through to a soft greige – not clinically cool, not pronouncedly warm, but a balanced pale natural tone. Distributed across the ground tone are soft, cloud-like flowing pale drifts and subtler, somewhat lighter patches that read like gentle cloudburst weather over a creamy, cement-like wall. Unlike the more characterful fair-faced concrete grades (4033 Rugged Concrete, 712B Wet Concrete), Cloudburst remains particularly calm and subtle in design terms – the cloud structures are so delicate that from a medium distance the slab reads as almost uniformly bright white to cream; close up, the fine modulation becomes apparent. The name “Cloudburst” refers to the delicate, cloud-like look, which resembles a light rain shower on a smoothed concrete.
Format and fabrication. Caesarstone supplies the slabs in the standard format 306 × 144 cm as well as in the jumbo format 327 × 162 cm, in 2 and 3 cm thicknesses; individual lines also in 1.2 cm and 0.6 cm (Caesarstone Slim) for wall claddings and furniture fronts. The slabs can be cut, profiled, drilled and edge-worked with diamond tooling. Standard edges are square, chamfered (V-chamfer, 45°), rounded (R3, R5) and finished profile edges such as bullnose or a mitred edge joint for 90° corner connections. The surface finishes available from stock are listed in the »Finishes« block further down.
Technical values. A Caesarstone quartz slab reaches typical bulk densities of around 2,100 kg/m³, a water absorption of about 0.02–0.05 %, compressive strengths in the range of 200–300 MPa and flexural strengths of 35–80 MPa. These values clearly qualify the material for heavily loaded interior fit-out applications.
Thermal and chemical properties. Engineered quartz is considerably more acid-resistant than marble, because the quartz aggregates themselves are inert to acid and the polyester accounts for only a small share of the volume. Even so: strongly concentrated acids (hydrochloric, sulphuric, nitric acid) and aggressive industrial chemicals attack the binder. Heat tolerance extends to roughly 150 °C for short periods; hot pots, frying pans or baking trays must never be set down directly on the surface, because direct point heat can cause discolouration or stress cracks. UV resistance is limited – the slab is clearly designed as an interior material and should not be permanently installed in fully sunlit conservatories or open loggias.
ROSSITTIS range. The surface finishes available from stock are listed in the »Finishes« block further down. From these we produce kitchen worktops (standard and island), vanity tops, wall claddings (including kitchen splashbacks and bathroom walls), bar counters, reception desks, buffet and furniture tops, interior stairs with treads and risers as well as window sills. The delicate Cloudburst feel suits pale kitchens with white cabinet fronts, friendly bathroom concepts and rooms with pale oak timber, stainless steel, brass and matt warm wall colours.
Comparison. Within the Concrete series, Cloudburst Concrete is the lightest and most delicate grade – stylistically related to 4044 Airy Concrete (somewhat purer grey, less cream). In tonal value lighter than 4030 Oyster and 4003 Sleek Concrete, considerably warmer than 4044 Airy. Against the solid white grades (2141 Snow, 1111 Vivid White), Cloudburst shows a delicately creamy tint with soft cloud modulation – not as uncompromisingly pure white. Compared with porcelain in a similar decor (Laminam Calce Bianco), the slab feels warmer to the touch and is less brittle, but is overall somewhat less resilient thermally and chemically.
Guarantee and brand. On its slabs in residential applications Caesarstone offers the “Caesarstone Forever” lifetime warranty, with clearly defined care and fabrication conditions. The brand is established Europe-wide among architects, interior fit-out contractors and premium kitchen studios.
An honest assessment. 4011 Cloudburst Concrete is a choice for clients and architects who are looking for a delicately creamy concrete feel that reads lighter than the classic fair-faced concrete grades and mediates in design terms between solid white and Concrete. The slab works particularly well in pale kitchen concepts and friendly bathroom architecture. Anyone who prefers a more powerful fair-faced concrete character with wipe marks is better served by 4033 Rugged Concrete or 712B Wet Concrete.
