Cut here. Treated here. On site, just assemble.
Wood machining, treatment and fire-retardant treatment · Alcover (Tarragona, Spain)
12,000m²
Plant
A production centre dedicated entirely to wood.
+13m
Beams
Pieces of over 13 m in the beam machining centre.
5axes
CNC
Angled cuts and milling without repositioning the piece.
3 · 4UC
UNE-EN 335
Autoclave treatment in use classes 3.1, 3.2 and 4.
0cuts
On site
Pergola kits with dimensioned drawings and confirmed measurements.
Services
The whole process, in a single plant
Machining, treatments, fire-retardant treatment and finishes at the Alcover plant.
Machining
5-axis CNC and beam machining centre for pieces over 13 m. Angled cuts and milling without repositioning the piece.
- 5-AXIS CNC
- BEAMS OVER 13 M
Autoclave treatment
Copper salts using the Bethell process: vacuum, pressure, vacuum. Treatment certificate per batch, on request.
- USE CLASSES 3 AND 4
- UNE-EN 335
Clear treatment
Protection and natural colour: for wood exposed to the weather that does not touch the ground or fresh water.
- USE CLASS 3
Fire-retardant treatment
In our own plant: in a pressurised varnishing booth or in the autoclave, also on pieces that have already been machined.
- OUR OWN PLANT
Brushing and texturing
Removes the soft parts of the wood and brings out its natural grain: relief and an aged look.
- SOLID WOOD · BEAMS · SLATS
Staining and finishes
Pressurised booth for wood stains, varnishes and paints, also after autoclave treatment.
- UV PROTECTION
Where will the wood go?
The location decides the treatment
Use classes assess the risk of attack by fungi and wood-boring insects according to where the wood is installed. They are defined by standard UNE-EN 335:2013.
Your choiceScots pineThe wood, treated
Which wood is it?
Where will it go?
Scots pine · Use class 1 · UNE-EN 335
Under cover, protected from the weather and not exposed to moisture.
For example: parquet, interior doors
We do not treat it in the autoclave: it is wood under cover, protected from the weather.
For interiors: machining, finishes and fire-retardant treatment in our own plant.
Fir · Use class 1 · UNE-EN 335
Under cover, protected from the weather and not exposed to moisture.
For example: parquet, interior doors
We do not treat it in the autoclave: it is wood under cover, protected from the weather.
For interiors: machining, finishes and fire-retardant treatment in our own plant. Indoors, also GL24h glulam in fir, in permanent stock.
Tropical hardwood · Use class 1 · UNE-EN 335
Under cover, protected from the weather and not exposed to moisture.
For example: parquet, interior doors
We do not treat it in the autoclave: it is wood under cover, protected from the weather.
For interiors: machining, finishes and fire-retardant treatment in our own plant.
Thermally modified wood · Use class 1 · UNE-EN 335
Under cover, protected from the weather and not exposed to moisture.
For example: parquet, interior doors
We do not treat it in the autoclave: it is wood under cover, protected from the weather.
For interiors: machining, finishes and fire-retardant treatment in our own plant.
Scots pine · Use class 2 · UNE-EN 335
Under cover and protected from the weather, with occasionally high ambient humidity.
For example: roofs, the structure of an indoor pool
We do not treat it in the autoclave: it is wood under cover, protected from the weather.
For interiors: machining, finishes and fire-retardant treatment in our own plant.
Fir · Use class 2 · UNE-EN 335
Under cover and protected from the weather, with occasionally high ambient humidity.
For example: roofs, the structure of an indoor pool
We do not treat it in the autoclave: it is wood under cover, protected from the weather.
For interiors: machining, finishes and fire-retardant treatment in our own plant. Indoors, also GL24h glulam in fir, in permanent stock.
Tropical hardwood · Use class 2 · UNE-EN 335
Under cover and protected from the weather, with occasionally high ambient humidity.
For example: roofs, the structure of an indoor pool
We do not treat it in the autoclave: it is wood under cover, protected from the weather.
For interiors: machining, finishes and fire-retardant treatment in our own plant.
Thermally modified wood · Use class 2 · UNE-EN 335
Under cover and protected from the weather, with occasionally high ambient humidity.
For example: roofs, the structure of an indoor pool
We do not treat it in the autoclave: it is wood under cover, protected from the weather.
For interiors: machining, finishes and fire-retardant treatment in our own plant.
Scots pine · Use class 3 · UNE-EN 335
Exposed, not in contact with the ground, and frequently wetted.
For example: exterior joinery, pergolas
At Tractia: Clear autoclave treatment.
3.1 · Limited exposure to rain and good drainage. 3.2 · Direct, prolonged exposure to rain or moisture. The wood keeps its natural colour, without the greenish tone of copper salts.
Fir · Use class 3 · UNE-EN 335
Exposed, not in contact with the ground, and frequently wetted.
For example: exterior joinery, pergolas
Fir does not take this treatment in depth.
Its cell structure prevents it. For outdoor use, ask us: autoclave-treated Scots pine or tropical hardwood.
Tropical hardwood · Use class 3 · UNE-EN 335
Exposed, not in contact with the ground, and frequently wetted.
For example: exterior joinery, pergolas
Suitable for outdoor use without additional treatment.
Iroko, Elondo and Ipé: their high oil content and high density make them suitable for outdoor use without additional treatment. Their cost is higher than that of autoclave-treated softwood.
Thermally modified wood · Use class 3 · UNE-EN 335
Exposed, not in contact with the ground, and frequently wetted.
For example: exterior joinery, pergolas
More stable and more moisture-resistant, with no chemical treatment.
Thermally modified: only heat is used. It improves dimensional stability and increases moisture resistance. Not recommended for structural use.
Scots pine · Use class 4 · UNE-EN 335
Outdoors, in contact with the ground or fresh water, with a high degree of moisture.
For example: posts, fences, bridges
At Tractia: Autoclave with copper salts, Bethell process.
Copper salts give the wood an initial greenish tone that weathering softens over time, with no loss of protection or structural properties. Indicated for softwoods and, in particular, for Pinus sylvestris.
Fir · Use class 4 · UNE-EN 335
Outdoors, in contact with the ground or fresh water, with a high degree of moisture.
For example: posts, fences, bridges
Fir does not take this treatment in depth.
Its cell structure prevents it. For outdoor use, ask us: autoclave-treated Scots pine or tropical hardwood.
Tropical hardwood · Use class 4 · UNE-EN 335
Outdoors, in contact with the ground or fresh water, with a high degree of moisture.
For example: posts, fences, bridges
Suitable for outdoor use without additional treatment.
Iroko, Elondo and Ipé: their high oil content and high density make them suitable for outdoor use without additional treatment. Their cost is higher than that of autoclave-treated softwood.
Thermally modified wood · Use class 4 · UNE-EN 335
Outdoors, in contact with the ground or fresh water, with a high degree of moisture.
For example: posts, fences, bridges
In contact with the ground or fresh water, ask us.
Thermally modified wood is not recommended for structural use. In use class 4 we treat Scots pine in the autoclave with copper salts.
Scots pine · Use class 5 · UNE-EN 335
In permanent contact with salt water.
For example: jetties
We do not treat it: permanent contact with salt water.
We treat in the autoclave in use class 3 (3.1 and 3.2, clear) and use class 4 (copper salts).
Fir · Use class 5 · UNE-EN 335
In permanent contact with salt water.
For example: jetties
We do not treat it: permanent contact with salt water.
We treat in the autoclave in use class 3 (3.1 and 3.2, clear) and use class 4 (copper salts).
Tropical hardwood · Use class 5 · UNE-EN 335
In permanent contact with salt water.
For example: jetties
We do not treat it: permanent contact with salt water.
We treat in the autoclave in use class 3 (3.1 and 3.2, clear) and use class 4 (copper salts).
Thermally modified wood · Use class 5 · UNE-EN 335
In permanent contact with salt water.
For example: jetties
We do not treat it: permanent contact with salt water.
We treat in the autoclave in use class 3 (3.1 and 3.2, clear) and use class 4 (copper salts).
Products
Standard or made to measure
Softwoods, hardwoods and tropical hardwoods. Ask us about other sizes or sections.
Glulam
Permanent stock in pine and fir. Strength class GL24h, lengths from 12.00 to 13.50 m.
- GL24H
- 7 SECTIONS
Solid wood · battens
Scots pine (Flanders pine) battens and profiles, autoclave-treated: tongue and groove and concealed fixing.
- 34 SECTIONS
Pergola kits
Made to measure for each customer, for awning and outdoor decoration professionals.
- 0 CUTS ON SITE
Thermally modified wood
Thermally modified: more stable and more resistant to moisture. It is not a chemical treatment: only heat is used.
- NON-STRUCTURAL USE
Tropical hardwood
Iroko, Elondo and Ipé: suitable for outdoor use without the need for additional treatment.
- IROKO · ELONDO · IPÉ
Outdoor structures
Made-to-measure pieces and profiles for outdoor equipment and street furniture companies.
- PUBLIC WORKS
Who we serve
For anyone who one day needs wood
Every trade asks something different of wood. Choose yours to see what we offer and how to order it.
- Do you work with wood and want to collaborate?Installers, technicians, suppliers and hauliers: this website is for you too.Propose a collaboration
The process
How to order
A technical question right now?
Projects
Wood, on site
What our customers build with our materials and services.
The company
From sketch to site
A production centre of over 12,000 m² in Alcover (Tarragona). Its five zones follow the path of the wood.
Diagram of the wood's path through the five zones · not to scale
01Technical office
Engineers, architects and draughtsmen turn every sketch into a dimensioned technical drawing or a 3D drawing, with all the construction details.
02Production area
CNC machining centre for beams and panels. Also batten machining, planing, sawing and profile moulding, and a pressurised varnishing and staining booth.
03Treatment plant
In-house autoclave treatment in use classes 3.1, 3.2 and 4 (UNE-EN 335), to extend the life of the wood against rot fungi and wood-boring insects.
04Fire-retardant plant
In-house fire-retardant treatment of wood, also on pieces that are already machined.
05Storage area
A controlled area where finished work is managed for delivery.
On site, just assemble: pergola and structure kits drawn with dimensioned drawings and confirmed site measurements.
Three generations working wood
About the company
Catalogue 2026
The whole catalogue, in PDF
Services, products and data sheets, with sizes, sections and use classes. The same catalogue we hand out in person.
All 16 pages, one by one
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