Wood is a natural material and as such, each board is unique in terms of wood grain, tonality, and natural imperfections. Due to changes in atmospheric conditions (including hot/cold temperatures and wet/dry conditions) wood moisture may change, causing the wood to increase or decrease its volume, which may result in cracks and fissure. All of this is natural.

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Angelim Amargoso, Iroko, and Teak.
Wood is always provided with a pigmented vegetable oil saturation treatment (see finishing). Upon request, wood can be provided without pigmented vegetable oil saturation treatment. Hardwood FSC is provided on request, and may result in extended delivery terms.

Metalco’s larch is always FSC-certified.
Larch is provided solid or glued laminated wood (glulam), depending on the product and on the section worked. Wood is provided autoclaved with a first pigmented vegetable oil saturation treatment coat (see finishing). Upon request, it may be provided without a pigmentation vegetable oil saturation.

Always and exclusively supplied with water-based irinting (see finishing).

Standardly supplied with water-based painting (see finishing). Upon request, RAL painting can be provided.

N.B: The images reproduced in these pages are merely indicative; please refer to physical samples.


Types of wood and available finishings for each product are listed on Metalco’s catalogues.

A. Pigmented vegetable oil saturation treatment
The most suitable treatment for hardwoods, such as Iroko, Teak or similar.

This treatment is not recommended in the case of lighter woods, including Okumé.

Attention: wood surfaces treated with oil naturally turn gray in a variable period of time depending on the environmental characteristics. The formation of the gray patina is a physiological reaction, and is a self-protection of wood against weathering. This does not affect the quality of the product. It is still possible to reduce the grinding of the wood by making a regular renewal of the oiling process (see “Maintenance”).

B. Water-based paint
This finish is excluded on hardwood wood types such as Pauoro, Iroko and Teak and similar, including Accoya® wood and Thermowood® treated wood.

Attention: Metalco strongly recommends not to choose varnished wood when regular maintenance is not possible (see “Maintenance”) and / or in case of severe atmospheric conditions, including highly polluted areas, areas with high temperature exposure, and locations with atmospheric corrosivity.

In such conditions, the varnish coat will quickly deteriorate, which can cause a visible peeling.


1. Base coat with catalyzed insulation (160 microns) – spray

2. Drying (4-6 hours) and automatic brushing*

3. Coat with water-based paint (200 micron) spray application

4. Storage for air drying

5. Visual quality control

(*) Only on Okume.


On wood elements, Metalco only offers warranties against rot. No warranty is provided for the duration of painting and oiling treatments, because although they are performed in a professional manner, there are numerous factors beyond the manufacturer’s control and results may vary from environment to environment. For aesthetic and functional reasons, Metalco requires regular maintenance of wooden surfaces (in conditions which are not particularly aggressive, at least once annually).

In the case of products that have undergone treatment or touch-up paint that requires complete repainting, firstly sand the product to remove surface dust, dirt and any old paint. Secondly, proceed to the drafting of a good water-based paint for wood with brush or spray, as indicated on the product. The product must ultimately be left to dry (usually a time varying between 2 and 12 hours, depending on the amount and mode of application and climatic conditions). For products that have undergone oil treatment and require a touch up, simply proceed to lightly sand the surface to remove deposits of dirt, and then apply a new layer of oil. It is beneficial to proceed with the renewal of the oiling process when you notice that the previous treatment has lost consistency and is dissipating. Please note that there is no standard timeframe. Rather, the timing depends on the conditions of “stress” in the environment where the product is placed.

In case of doubt about the proper maintenance procedure, you can contact the Metalco Quality Office for advice.


Products must be removed from plastic (nylon) packaging to avoid damage. In the case that a product can not be installed within the first few days, make sure product is removed from packaging to allow ventilation and prevent formation of condensation. This can irreparably damage the product.