Elval Colour - The secrets of coloured facades

Texture and colour play an important role in the realisation of any architectural vision. Certain shades might be available in a limited number of coatings, while different coating systems may have a range of aesthetic attributes, such as gloss, texture and colour.

The choice of the chemistry and the layer structure of a coating system also defines the durability of the coating in combination with the substrate. Durability dictates how a colour's aesthetic attributes will last over time, as well as its integrity on the substrate; there must be a guarantee that it will not delaminate, crack, chalk, blister or fade away. The functionality of each coating is also an important parameter to consider when choosing a colour. The coating could be easy to clean (such as Elval Colour arypon), suitable for graffiti removal (Elval Colour agraphon, for example) or antimicrobial (as is the case with Elval Colour abacton), or with high or low reflectivity, depending on the demands of the building/regulations.

The right alloy

The choice of aluminium alloy is crucial. Its elements define not only the mechanical characteristics of the metal but also the effects of corrosion upon it. The 'correct' degreasing and passivation also affects the durability of the material. Aluminium, as it comes from the mill, contains lubricants and oxides from the rolling process. These must be removed through chemical treatment before any coating is applied to achieve good adhesion. Furthermore, the free aluminium oxide roots should be passivated or protected against corrosion.

This chemical process is always performed just after degreasing; the correct degreasing and passivation ensures that the aluminium substrate is protected against corrosion and that it is ready to accept a coating. The coating stage should be performed under strictly controlled processes, have certified procedures and use only certified raw materials (coatings sourced from reliable producers). Here, online and offline quality measurements have a significant contribution to the overall product quality.

The correct choice of the coating chemistry in relation to the application affects also the durability of a system.

For example, the ideal coating chemistry for a building by the sea in the Middle East will be different from that required for a building in Central Europe that is far away from seawater.

Thickness and layer structure also play an extremely important role in the durability of a coating. High coating thickness gives a better corrosion resistance, for example, while, for a high-UV area, a UV blocker/clearcoat should be used.

Durability dictates how a colour's aesthetic attributes will last over time, as well as its integrity on the substrate; there must be a guarantee that it will not delaminate, crack, chalk, blister or fade away.

Functionality means chemistry

Coating functionality depends on chemistry. Certified suppliers that offer warranties on their products are a must; Elval Colour always pretests and certifies any functional coating before it is released on to the market. The result is affected by the chosen shade.

This is mainly the responsibility of the architect designing the project. The finish (gloss) also affects the aesthetic result and is usually defined by the architect.

The latest textural trend is to imitate stone, wood and paper. This can be achieved by applying Elval Colour's Tx, Tr or 3D coatings, such as ceramic, travertine and 3D wood. Mica/Dual Colour systems, meanwhile, can change a shade depending on the angle from which it is observed; for example, from orange to gold, gold to silver, or blue to red.

The perfect combination

Elval Colour has set up a structured network of sales and technical teams in order to be able to cooperate with architects, customers and developers so that everybody understands the precise requirements of each project through interactive and creative meetings.

Having collected all this information, Elval Colour's technical department is then in a position to suggest an optimum system that combines durability, aesthetic result, function and cost. Elval Colour has a wide technical knowledge of the field of coil coating. The processes under its control are certified by the relevant international bodies.

The fact that it exports to more than 70 countries, and that it competes globally, gives Elval Colour the advantage of being a world-class coil coating and composite panel production company. The firm has more than 40 years' experience and its composite facade panels are certified to be sold in more than 20 countries (including Germany, France, Poland, Spain, the UK and Switzerland).Elval Colour offers a complete range of products for building-envelope applications, including perforated and corrugated sheets. Its products are etalbond aluminium composite panels; ENF corrugated sheets for roofs or facades; ydoral pre-painted aluminium for rain gutters; and orofe prepainted aluminium coils and sheets for roofing.

The company's products are offered in a wide range of standard and custom colours made in its own mixing laboratory, and applied in one of the four coating lines to suit any project.

With a full package of products, the company aims to enhance architectural visions by creating innovative and creative architectural spaces.

Products and Services

Contact Details

Elval Colour
St. Thomas Plant & Offices 3rd km Inofyta Peripheral Rd. 32 011, Saint Thomas Viotia
Tel: +30 22620 53563 Fax: +30 22620 53581
URL: www.elval-colour.com

Elval Colour’s flexible, lightweight and non-flammable etalbond A2 coated aluminium.
The construction of etalbond A2 composite material from Elval Colour, comprising a lightweight aluminium skin, adhesive layer and innovative non-flammable mineral core.
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