The Material.
Concrete is a unique, timeless material.
Starting out life as a liquid, concrete in its natural form is unlike any other stone. Its versatility enables us to engineer products that push the boundaries of design. Our unique product range is a perfect example of what can be achieved with this liquid stone. From simple monolithic forms to refined contours and patterned surfaces, our ever-growing product range sets a precedent for what can be achieved with this material.
Not only this, all Kast products are made from traditional, aggregate-based concrete. Real, authentic concrete using limestone from local suppliers in Derbyshire alongside specially sourced sands and high-quality pigments that are carefully blended to create the Kast palette of 28 colours.
We choose not to use glass fibre reinforced concrete as we prefer the aesthetic integrity of traditional, aggregate-based concrete. Our unique combination of aggregates naturally enhances the strength of our concrete and provides volume stability and durability. The depth of texture that occurs visually as a result of carefully blended aggregates and cement creates a solid, tactile aesthetic with organic, stone-like characteristics.
Typical Characteristics Include:
Pin Holes
Due to the nature of the casting process, air trapped within the concrete can sometimes cause small holes to form within the surface. These can vary in size and number which adds to the distinctive texture and aesthetic of concrete.
Surface Colour Variation
Concrete will never be a monotone block colour due to the number of variable materials from which it is made. The variations in tone and texture create a unique patina that is integral to the character of concrete.
Exposed Aggregates
Kast concrete basins are manufactured using a traditional mix of aggregates, sand and cement. In some cases the aggregates may be visible within the surface of the concrete which is part of the unique, natural texture.
Textural Flow Lines
The liquid state of concrete when it is being cast means that textural flow lines can sometimes be visible on the surface of the concrete. This tends to be more visible when casting curved or tall vertical surfaces and is another typical characteristic of concrete.
Crazing
Small, fine, hairline cracks on the surface of concrete are very common within the lifelong curing process and do not impact the structural quality or performance of the basin. They can also appear darker when wet. If you are concerned about the placement or size of any cracks please do get in touch.
Please Note: Products may look slightly different to those featured in marketing imagery as every basin is completely unique. Colour and texture variations are part of the natural characteristics of concrete and have no bearing on the structural integrity of the product nor should they be deemed as defects within the material, design or workmanship. Concrete, like any other natural stone or wood, will develop a patina over time and these characteristics may become more pronounced with age.