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Copper Azole Treatment

General
The preservative in Wolmanized® Outdoor® wood is not a restricted use pesticide and does not meet the definition of hazardous waste. As a result, fewer environmental restrictions apply. No EPA precautions apply to handling the wood and there is no required Consumer Awareness Program (CAP).

Code Acceptance
Wolmanized Outdoor wood meets requirements of model building codes for many applications, and a code evaluation report has been issued. See NES National Evaluation
Report No. 669 for allowable values and/or conditions of use. Such reports are subject to re-examination, revisions, and possible closing of file. The preservative treatment is listed in the standards of the American Wood-Preservers' Association and is suitable for above-ground and ground contact applications (Use Categories UC1, UC2, UC3, UC3B, UC4A, UC4B and UC4C). Internationally, it is approved by government and trade agencies throughout Europe and in Australia, New Zealand, and Japan.

Retentions
Different applications may require different amounts of preservative protection. Below are the standards of the American Wood-Preservers' Association for the two copper azole formulations.


AWPA Retention Standards
Intended End Use AWPA
Use
Category
Copper Azole Typical Applications
<
CA-B
lbs./cu.ft.
Decking* NER-669 0.08 Sapwood species: decking
and specialties
Exterior Construction
Above Ground
3B 0.10 Decking, deck joists,
railings, fence pickets
Ground Contact or
Fresh Water
4A 0.21 Fence posts, structural
lumber & timbers, guardrail
posts, utility poles in low
decay regions
Ground Contact, or
Fresh Water
or Important
Structural
Components
4B 0.31 Permanent wood
foundations, sawn & round
building poles, utility poles
in moderate decay regions
*Recommendation of building code report, not AWPA.
 

AWPA Use Category System
To see the entire table summarizing the new AWPA Use Categories and corresponding retention levels for Wolmanized Outdoor wood,
click here.

Recommended Hardware

Hot-dipped galvanized fasteners (meeting ASTM A 153) and connectors (ASTM A 653 Class G185 sheet), or better, are recommended for protection against the moisture often present where treated wood is usually used. For Permanent Wood Foundations, use 304 or 316 stainless steel. Aluminum should not be used in direct contact with this wood.

For indoor applications, while galvanized fasteners are preferable, the use of non-galvanized nails or screws of sizes and types approved by the Model Code is acceptable when attaching joists, studs, or other framing to Wolmanized sill plate, provided the wood will remain dry in service, protected from weather and water. Likewise, the use of standard galvanized strapping, anchor plates, or mild steel anchor bolts ½” diameter and larger is acceptable for fastening Wolmanized wood to foundations, provided that the wood will remain dry in service, protected from the weather and water.

Click here to view the Wolmanized MSDS Sheet
Click here to view the Wolmanized Warranty


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