Types of protection for wood when exposed to the outside

Table of Contents

We recommend this post about wood protections if you are thinking about using this material for any of your projects.

Like any material exposed to the outdoors, the appearance of wood changes over time.

The wood is still a healthy wood in spite of these changes, it is normal to see how in his surface a patina is formed that gives it a tone between light and dark grey.


The autoclave protections are the most effective solutions for your exterior cladding and flooring as well as for all other exterior equipment or structures made of solid wood.

These treatments allow to attenuate this phenomenon or to anticipate it in order to achieve a homogeneous evolution and limit the maintenance to a simple regular cleaning. In no case is it advisable to use a natural wood without being previously treated as a coating or flooring without applying a suitable finish.

Autoclave treatments are classified by type of risk or exposures and range from number 1 to number 5.

  • Risk 1 the most basic protection indicated for interior use woods not exposed to humidity;
  • Risk 2 for interior woodwork exposed to moisture such as kitchens and bathrooms;
  • In Risk 3 for exterior wood without contact with humidity such as soil, like decorative elements, furniture and exterior carpentry with a low degree of exposure to atmospheric adversities;
  • On Risk 4 for wood outdoors and in contact with soil moisture or fresh water, such as pallets, planters, posts, etc.
  • Risk 5 for exterior wood exposed to salt water such as docks, boats, piers, piers, gangways etc.

Wood Saturator

In addition to the autoclave treatments, there are different finishes that allow the wood to be personalised and provide long-lasting protection.

Saturator is the ideal finishing solution for your solid wood projects. It is a translucent material that penetrates deep into the wood fibers and effectively protects it from external aggressions.

It does not form a film, it is necessary to renew it every 5 years depending on the exposure and it does not require previous sanding.

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