Preserve® is treated with ACQ®, a copper plus quaternary preservative system that provides long-term protection from fungal decay and termite damage for a wide variety of residential and certain agricultural construction applications.
Preserve® Plus combines the preservative properties of ACQ with built-in water repellent protection that is pressure-treated deep to the heart of the wood, unlike brush-on applications that only protect the surface of the wood.
Preserve and Preserve Plus each received NAHB Research Center National Green Building Certification as a "Green Approved Product", and are eligible to contribute points toward certification of a building under the National Green Building Standard™. See our product listing on www.GreenApprovedProducts.com for more information. Download NAHB Certificate Here (628k PDF)
Preserve and Preserve Plus are each backed by a Lifetime Limited Warranty against fungal decay and termite damage.
- Provides long-term protection against fungal decay and termite attack
- For use in above-ground, ground contact, fresh-water immersion, and salt-water splash applications
- Can be used in residential and certain agricultural applications
- AWPA Standardized, and adherence to AWPA treatment standards is verified by independent third-party product inspection.
- Offers a wider selection of timber species
- Easily painted or stained
- Features a lifetime limited warranty
- Preserve is also available with built-in water repellent (Preserve Plus)
Applications (Above ground / below ground)
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|
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Standardized by the American Wood Protection Association
- Use categories: U1, T1, UC1, UC2, UC3A, UC3B, UC4A, UC4B, UC4C
- Certified as a "Green Approved Product" by the NAHB Research Center and eligible to contribute points towards the National Green Building StandardTM
- ICC Evaluation Service Report (NER 643)
- Winner, 2002 US EPA Presidential Green Chemistry Award
- Canadian Standards Association (CSA-O80)
- Japanese Industrial Standards (JIS)
- Australian/New Zealand AS/NZ Standard 1604
- Australian Quarantine and Inspection Service (AQIS)
- American Association of State highway and Transportation Officials (AASHTO M-133)
Recommended Retention Levels:
| APPLICATION | RETENTION (LBS/CU.FT) | TYPICAL USES |
|---|---|---|
|
Above Ground
|
0.20
|
Decking components, 5/4" decking, fence boards, trim & fascia, framing, flooring, sill plates, ftrellises, gazebos, plywood |
| Ground Contact Fresh Water |
0.40
|
Deck support posts, fence posts, landscaping, piers, docks plywood |
| Critical Structural Members1 |
0.60
|
Poles (building, transmission, and distribution), salt-water splash areas |
| Wood Foundation Systems |
0.60
|
Wood foundations, crawl spaces |
1 Pole approval for ACQ Type B
Nails, Fasteners and Connectors
For the best results, use of building-code approved, corrosion-resistant fasteners and connectors is always recommended.
Direct contact of Preserve treated wood with aluminum fasteners and fittings is not recommended.
- Wear a dust mask and goggles when cutting or handling treated or untreated wood.
- Wear gloves when working with treated or untreated wood.
- After working with wood, wash exposed areas thoroughly.
- Do not burn pressure-treated wood.
- Wash work clothes separately from other household clothing before reuse.
- Pressure-treated wood should not be used where it may come into direct or indirect contact with drinking water, except for uses involving incidental contact such as fresh water docks and bridges.
- Do not use pressure-treated wood in circumstances where the preservative may become a component of food, animal feed, or beehives.
- Do not use pressure-treated wood for mulch.
- ACQ treated wood scraps and cut offs should be disposed of in a non-hazardous material lined landfill in accordance with local, state and federal regulations.
Refer to the latest Preserve Material Safety Data Sheet (MSDS).




