Fire-retardant treatment
Fire-retardant treatment in our own plant
At Tractia we offer a wide range of options for fire-retarding wood or wood-based products, through traditional processes in a pressurised varnishing booth or through more industrial processes, with our own autoclave treatment plant.

What is fire-retardant treatment?
Fire-retardant treatment adds products to the wood that delay its ignition and reduce flame spread: it improves its reaction to fire. The fire-retardant treatment is carried out at our plant in Alcover, including on pieces that have already been machined.
In general, depending on the product, the protection remains within the body of the wood or on its surface. Which one is appropriate depends on the species, the format and the use of the piece.
Two ways to fire-retard wood
| Method | Products |
|---|---|
| In the body | Fire-retardant salts, by autoclave impregnation |
| On the surface | Fire-retardant varnishes, wood stains or paints |
General outline · the system for each order, on enquiry
Application systems
- 01
- Application of non-intumescent products
- 02
- Application of intumescent products
- 03
- Application of water-based or polyurethane-based lacquers and varnishes on wood and wood-based products, with products approved for reaction-to-fire class 1 and classes B-s2,d0 and B-s1,d0 according to UNE-EN 13501-1
- Note
- With the exception of materials veneered with adhesives based on thermoplastic resins, or assembled with a cellular or batten structure that includes air cavities (for example, rattan)
In the same facilities
Machining and fire-retardant treatment in the same facilities. The fire-retardant treatment is carried out at our plant in Alcover, including on pieces that have already been machined.
- Fire-retardant treatment plant · Alcover
- Application in a pressurised varnishing booth
- Autoclave treatment plant

Suitable for interior decoration projects and for structural projects with solid wood or glulam beams.
Tractia Catalogue 2026, p. 13
Frequently asked questions
Can a piece that has already been machined be fire-retarded?
Yes: in-house fire-retardant treatment service for wood, including pieces that have already been machined.
What should the preliminary enquiry include?
Please tell us the use of the project and where the wood will be installed; the species, the format and whether the pieces are to be machined; the project’s fire requirements; and the documentation you need.
Which system and product will the order use?
System, product, species, formats and available documentation: on enquiry, before the order.
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




















