CONCRETE

Concrete is a natural material and due to its nature it may present slight nuances and variations in its combination, which is a key characteristic of the material and production technology. Fibres are a component of the cement mix and give the Ductal cement its extreme strength and flexibility. If the chosen finish is highly polished, fibres may be visible on the surface and must be accepted as an intrinsic feature of the finish. Cement top and flat surfaces, especially the large ones, are not perfectly flat due to the nature of the material and its craftsmanship. Micro shrinkage cracks must be accepted as a natural phenomenon of the material’s workmanship. Small holes and bubbles may appear on the surface of cement products. They are a natural consequence of the production process and an integral part of the material’s characteristics. Their appearance and quantity varies from finish to finish. Holes smaller than 4 mm in diameter are left as they are, while they are normally grouted when they exceed 5 mm in diameter.

Concrete is a porous material that tends to absorb liquids which get in contact with its surface, which is why it must be protected with special products such as anti wear sealant and Anti stain sealant. It is therefore important to avoid the stagnation of liquids on the surfaces and especially the prolonged contact between cement and wet objects such as vases, bottles, glasses or plastic sheets: incorrect evaporation of liquids can cause stains that are difficult to remove. Clean the surface with water and neutral detergent with a low content of wax (for ex. marble flooring products). Stubborn stains can be cleaned by using a solution containing 10% diluted ammonia/bleach, which is 1 part bleach for 10 parts water.