Certification in the wood preservation sector
Devices that improve the environment for users but also for residents.
Indeed, the timber is perfectly suitable for road infrastructures, whether in the area of safety (crash barriers), noise reduction (noise reducing screens) or the environment (wildlife crossings) while at the same time maintaining a natural aesthetic character.
The performances associated with
each type of product are defined
by several European standards.
These very technical products
are validated by tests to confirm
that their performance ability
corresponds to the given use. In
this context, CTB-B+ certification
guarantees the expected durabulity
for these uses. They are treated for
use class 4.
For particular structures, treatment
with « 4SP » retention offers
CTB-B+ treated timber ensures
the durability of these structures.
It should however :
• avoid water traps and retentions
on the exposed part above
the ground in contact with the
embankments by means of
• ensure the implementation of
drainage adapted to the base if
the embedded part has been cast
• prohibit any machining after
CTB-B+ treated timber does
require the application of any
additional products to ensure
It should be maintained by cleaning
using a brush and/or water jet (high