Autoclave · Use class 3
Protection and natural colour
For wood that will be exposed to the weather without touching the ground or fresh water. Autoclave-treated in use class 3, it keeps its natural colour, without the greenish tone of copper salts.
What is it?
Autoclave treatment with a colourless preservative that improves the durability of the wood against the biological agents that can damage it. The wood keeps its natural appearance and can be left visible, in its own colour.
Ideal for exterior joinery, cladding, structures, pergolas, furniture and other elements exposed to the weather. Not suitable for pieces in contact with the ground or with fresh water, such as posts, fences or walkways: for these, autoclave treatment in use class 4 with copper salts.
Technical data
- Use class (UNE-EN 335)
- 3 (3.1 and 3.2) · exterior, no contact with the ground or with fresh water
- 3.1
- Limited exposure to rain and good drainage
- 3.2
- Direct and prolonged exposure to rain or moisture
- Colour
- Colourless
- Process
- In the autoclave, by spraying
- Subsequent finish
- Wood stain, varnish or paint, in a booth
- Documentation
- Treatment certificate per batch, on request
First we machine, then we treat
First we machine and then we treat, so that the treatment also reaches cuts and joints. Later machining can impair the treatment: in use class 3.1, apply preservative to the cut; in use classes 3.2 and 4, avoid machining the treated piece.
- Machined before treatment — The treatment also reaches cuts and joints.
- Machined after treatment — A later cut can leave points of attack.
Frequently asked questions
Can the treated wood be given a different shade?
Yes. It accepts a surface wood stain, applied in our booth, to give it a different shade. All wood outdoors, treated wood included, undergoes discolouration: the wood stain helps to protect it.
Does the treatment change the appearance of the wood?
No. The product is colourless: the wood keeps its natural appearance. The treatment does not alter its own characteristics, such as cracks or knots, nor its natural ageing, which tends towards grey.
What documentation comes with the treatment?
Treatment certificate per batch, on request.
Enquiry
Tell us about your project
Send us the drawing or cutting list and we will prepare a proposal. With the measurements, quantities and the location where the wood will go, the answer is more precise.
Av. de Reus, s/n · 43460 Alcover (Tarragona)
Monday to Thursday: 8.00 – 18.00Friday: 7.00 – 15.00