Note that in most cases ground contact treated posts can be used in an above ground use application.
Can pressure treated wood contact ground.
This has the best rating for ground contact and has the longest life expectancy.
For direct contact or buried in ground they recommend what is called pwf grade preserved wood foundation.
Materials do not require an additional exterior coating.
To ensure you re building with the right lumber check the board s label or stamp for its chemical retention level.
Where i live you can buy different grades of pressure treated wood.
Ground contact lumber can be used either above ground or in contact with the ground.
Geoff case home depot s merchant for decking and pressure treated lumber explained.
What is pressure treated lumber.
4x4x8 pressure treated 2x6x8 pressure treated southern pine pressure treated lumber ground contact pressure treated lumber 1x6x10 douglas fir 1 6 pt.
All of the professional deck builders interviewed said that all components used to build a deck should be ground contact pressure treated lumber.
However these materials may be finished to achieve a desired aesthetic appearance.
We re partnering with suppliers to convert certain wood products from above ground contact retentions to ground contact retentions in a rolling change that began in february and will impact nearly every u s.
Deck safety was the unanimous number one concern of this group.
Can you paint pressure treated lumber.
How doers get more done.
Must be used when lumber is less than 6 inches from the ground or has poor ventilation.
Answers to these questions and more.
Uc3b above ground exposed treated wood materials used in exterior construction that do not come into contact with the ground.
Has twice the level of chemical retention and protection compared to above ground treated wood.
Below is a brief summary of the awpa s use category system for treated wood.