Decking
Thermo-treated wood decking
Thermo-treated wood is European wood (ash, pine or spruce) heated to high temperatures, with no chemicals. It becomes more stable and more resistant to rot, with an even brown colour.
What it looks like
The heat treatment gives it a brown colour that is even through the whole thickness. Left unoiled, it turns silver-grey over time.
Durability and maintenance
Thermo-treated ash reaches durability class 1, pine and spruce class 2. Oil once a year for the colour.
Thermo-treated wood is more brittle than untreated wood, so it needs careful handling and installation.
Installation
Many boards have a profile for hidden clips, so the surface has no visible screws. For the substructure we also use thermo-treated joists.
When to choose it
When you want a European wood rather than tropical species, with an even look and a mid-range price.
Guide price
Installation from 25 €/m²
Installation (labour) usually costs between 25 and 35 €/m². The difference comes from the material (dense tropical hardwood is harder to work than WPC), the substructure and how easy it is to reach the deck site.
Installation includes
- The joist substructure
- The boards, fixed with hidden clips or screws
- Cutting and edge finishing
Example: for a 20 m² deck, installation costs around 500–700 €.
You get the exact price in our quote, once we have seen the site and you have chosen the material.
We also sell materials only
If you are installing it yourself, we deliver the boards, substructure, clips and screws, with quantities worked out from your deck’s dimensions.
Frequently asked questions
Does thermo-treated wood contain chemicals?
No. Its resistance comes from the heat treatment alone.
Which species do you have?
Ash (21 × 100 mm), pine (26 mm thick, 92, 117 and 140 mm wide) and spruce (26 × 140 mm).
Get a quote
Ask for a decking quote
Tell us the approximate area, the material you have in mind and where the deck will be (garden, roof, pool). Photos of the space help.