SupaTimber® CCA pressure-treated wood is a commercial-grade solution protected from decay and termite attack with Chromated Copper Arsenate (CCA) wood preservative.*
SupaTimber is registered for use only in the pressure treatment of certain commodity building materials used in industrial and commercial applications and is not approved for any residential applications. Please see Decking and Fencing for residential treatment solutions.
- Long-term protection against decay and termite damage
- Proven track record of 30-plus years service in industrial settings
- SupaTimber CCA offers a Limited LifeTime Warranty against termite damage and fungal decay.
Painting and Staining or Natural Weathering
- High-quality oil and latex-based paints and stains or water-repellent coatings can be applied to improve weathering performance.
- Left uncoated or with clear water repellent coatings, SupaTimber will weather to a natural gray color.
- It is important to ensure that the wood is dry and clean prior to applying any coating.
Nails, Fasteners and Fittings
Hot dipped galvanized or stainless steel fasteners and fittings are recommended. Stainless steel fasteners are strongly recommended for marine and applications or areas that are constantly wet. Anti-corrosion coatings applied to fasteners and fittings in contact with treated wood may enhance long-term performance. Direct contact of SupaTimber-treated wood with aluminum fasteners and fittings is not recommended. Viance always recommends that current building codes be consulted for up-to-date lists of approved fasteners.
* SupaTimber CCA is manufactured by CSI, Inc., and marketed by Viance under license.
Categories of Forest Products That May be Treated With CCA
CCA (chromated copper arsenate) is registered for use only in pressure treatment of certain commodities. It is the treater's responsibility to comply with the terms of the label. Only the categories of forest products in the following tables may be treated with CCA and in accordance with the respective Use Categories as specified by the American Wood Protection Association in the most current edition of the AWPA Book of Standards. Commodity specifications are as identified by the AWPA in its most current edition of standards.
Specify SupaTimber for industrial or commercial applications in which conditions conducive to termites and fungal decay are present. These conditions would include any situation in which wood will be in contact with water, soil, concrete or masonry, subject to periodic wetting, or exposed to moisture or high humidity. Download SupaTimber CCA specs here.
| AWPA Commodity Specification: Posts | |
| AWPA Use Category |
Commodity |
| UC4A | -Posts, round, 1/2 and 1/4 round for highway construction (including guide, sign and sight) Fence (farm) |
| UC4B | -Posts, round, 1/2 and 1/4 round for highway construction (including guardrail posts, spacer blocks) and for road salt/brine storage Posts, round, 1/2 and 1/4 round for building construction Round, used as structural members in agricultural uses |
| AWPA Commodity Specification: Poles | |
| AWPA Use Category |
Commodity |
| UC4B |
-Utility poles (including laminated) -Poles for highway and agricultural construction, lighting, building structural use |
Note: poles may be glue-or mechanically-laminated
| AWPA Commodity Specification: Round Timber Piling | |
| AWPA Use Category |
Commodity |
| UC4C | -Foundation and fresh water piles |
| AWPA Commodity Specification: Sawn Products | |
| AWPA Use Category |
Commodity |
| UC3B |
-Guardrails for highway construction, including for golf course bridges meeting highway construction standards -Shakes and shingles -Tile batts -Siding (commercial/residential/agricultural) -Roller coaster construction -Lumber/timbers used for fish ladders, lobster traps, oyster farming (saltwater/brackish water only) |
| UC4A |
-Lumber/timber for highway construction, including for golf course bridges meeting highway construction standards -Crossarms -Fence rail (farm/agricultural only, round, ¼ round, ½ round) -Roller coaster construction -Cooling towers (fresh water contact) |
| UC4B |
-Highway bridge decking (above ground, structural, subject to critical/severe decay) -Road salt/brine storage -Highway construction materials, including cribbing, lighting -Piles (structural support in residential or business construction) -Posts (sawn 4 sides) for highway construction, farm/agricultural structural use, spacer blocks, important building structural use -Poles for structural building use -Roller coaster construction -Lumber/timbers for cooling towers, permanent wood foundations -Lumber/timbers (5 inches or greater) for residential/business structural use; highway construction and cribbing; retaining walls for highway uses; residential/business building support -Lumber/ Timbers (2 x 8 inch and/or 3 x 6 inch or greater) for marine use (out of water, ground contact, including salt water splash) |
| UC4C | -Piles for residential/business structural support, critical |
| AWPA Commodity Specification: Wood Composites | |
| AWPA Use Category |
Commodity |
| UC3B |
-Composite lumber for structural uses -Glue- or nail-laminated members -Plywood for agriculture, farms, roof sheathing, flooring, subflooring, flat-bed trailers |
| UC4A |
-PSL & LVL composite lumber for highway construction -Members (laminates) -Plywood for farm/agricultural use, mariculture, boats, compost/flumes, flooring for industrial/commercial/ agricultural, wet industrial process areas, storage sheds, garages |
| UC4B |
-Plywood for marine use where salt water splash -Plywood for road salt/brine storage, highway construction materials -Plywood for permanent wood foundation -Plywood for wet industrial processing areas, including cooling towers -Composite lumber for highway construction -Glue-laminate members (important structural or saltwater splash) |
| UC4C |
-Composite (PSL & LVL) lumber highway structural use -Members (laminates) for critical structural uses |
Note: laminates can be glued or mechanically fastened
Note: PSL = parallel strand lumber, LVL = laminated veneer lumber
| AWPA Commodity Specification Marine: (Salt Water/Brackish Water) Applications | |
| AWPA Use Category |
Commodity |
| 5A-5B-5C |
-Bulkhead sheathing -Lumber/timbers use, including use in aqua/mariculture, timbers and cross bracing, highway construction, boats -Piles for marine applications -Plywood for marine construction, boat building |
For informational purposes only, the legacy AWPA "C" standards (pre-2003) are provided below. The following list is taken from outdated AWPA standards only to illustrate examples of the types of wood that fall within each commerical standard. While the list is not exhaustive, it does provide some examples of specific uses. The newer "UC" standards on the Commercial Specs tab should be used in new specs.
| Standard | Use or Application |
| C2 | Lumber and Timber (for Salt Water Use) |
| C3 | Piles |
| C4 | Poles |
| C9 | Plywood |
| C14 | Wood for Highway Construction |
| C16 | Wood Used on Farms (Poles, Piles & Posts Used as Structural Members, Fence Posts & Plywood) |
| C18 | Wood for Marine Construction |
| C22 | Lumber and Plywood for Permanent Wood Foundations |
| C23 | Round Poles and Posts Used in Building Construction |
| C24 | Sawn Timber Used to Support Residential & Commercial Structures |
| C25 | Sawn Crossarms |
| C28 | Structural Glued-Laminated Members & Laminations before Gluing |
| C30 | Lumber, Timbers & Plywood for Cooling Towers (2002 Book of Standards) |
| C33 | Structural Composite Lumber |
| C34 | Shakes & Shingles |
SupaTimber CCA Recommended Minimum Retentions for Various Non-Residential, Industrial and Commercial Applications
| Application | Retention (lbs/CuFt) |
| Above Ground | 0.25 |
| Ground Contact Fresh Water | 0.40 |
| Permanent Wood Foundations |
0.60 Wood foundations, crawl spaces |
| Poles |
0.60 Building, transmission and distribution poles |
| Pilings |
0.80 or 1.00 Standard and foundation piles |
| Marine Pilings | 1.50 or 2.00 |
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