"treated timber" is a correct and usable phrase in written English.
You might use it to describe something that has been chemically treated, such as timber used in construction or outdoor furniture. For example, "This outdoor dining table is made of treated timber, so it will last for many years in the elements."
In this study leaching experiments of up to 3 weeks duration were conducted on two species of chromated copper arsenate treated timber, dried for different periods of time.
The potential environmental impacts from the use of treated timber in aquatic areas is under scrutiny as a result of environmental legislation and reports of the deleterious environmental effects around treated structures.
Make the bed with copper treated timber sleepers.
Clamp the rubber membrane around the edge of the roof using treated timber battens.
Never use metal watering cans, copper treated timber, or fertilizer containing copper when caring for bromeliads.
To combat this, you should put your shed on top of a concrete base, or suspend it with breeze blocks and pressure treated timber.
Around 300 tons in total of mixed chromic acid and arsenic was intended to treat timber electricity poles for the Ethiopian Power Company.
Bat numbers have also been affected by loss of habitat and poisoning from toxic chemicals used to treat timbers in the roofs where they roost.
Set the foot on either a 6 x 6-inch (150 x 150 mm) treated wood timber or roofing paper (if set upon concrete) to prevent rot.
You may want to build your children a nice sandbox, so that they can enjoy the great tropical setting too; this is a project that can be easily done with a few treated landscaping timbers and lots of sand.
"Just the process of treating the timber will take two years," says Jean-Louis Andral, head of the Antibes museum.
