Retention

Find the right retention for the application.

Retention is the amount of preservative retained in the wood after treatment. The preservative used has been subjected to extensive field-testing and has proven its viability for long-term performance in some of the harshest environments in the world. It also offers proven protection against rot, fungal decay and termite attack.

Retentions include:

Above Ground – Fence

Applications: Fence pickets

Above Ground – Light Duty

AWPA Use Category: UC3B

Above Ground Applications: Balusters; Spindles; Handrails; Lattice; Decking (in certain applications)

Ground Contact Applications: Not allowed

Use when:

• Easily replaced or maintained
• Not critical to performance and safety of structure
• Above six inches from the ground
• Proper ventilation and drainage

Ground Contact – General Duty

AWPA Use Category: UC4A

Above Ground Applications: Beams; Joists; Ledger Boards; Decking

Ground Contact Applications: Step Stringers; Posts

Use when:

• Difficult to replace or maintain
• Critical to performance and safety of structure
• Less than six inches from the ground
• Poor ventilation and drainage
• Exposure to frequent wetting (freshwater, swimming pools, hot tub or sprinkler system)
• Prolonged contact with vegetation or leaf litter

Ground Contact – Heavy Duty

AWPA Use Category: UC4B

Above Ground Applications: None

Ground Contact Applications: Posts

Use when:

• Difficult to replace or maintain
• Supporting a permanent structure
• Exposure to salt water
• Extreme climates