Genuine Wolmanized® Residential Outdoor Wood

Treated with a copper-based preservative and an efficacious fungicide, this wood is ideal for applications including decks, retaining walls, fences, picnic tables, planter boxes, walkways, sill plate, and structural members. It comes with a limited lifetime warranty for most residential applications and has earned the endorsement of Hometime’s Dean Johnson.

Wolmanized® wood is a natural and environmentally responsible choice. It’s made from wood, a renewable resource. Treatment extends the life of the wood, and the preservative used is as gentle as it can be and still be effective and long-lasting. A life cycle analysis confirms the environmental benefits of wood.

To top it off, this wood costs less than other alternatives such as redwood, cedar or recycled plastics.

genuine_outdoor_deck_hottub

This wood is effective against termites and fungal decay, both above-ground and in-ground. It is ideal for many residential and commercial applications.

  • Decks
  • Fences
  • Outdoor furniture
  • Retaining walls
  • Benches
  • Walkways
  • Picnic tables
  • Sill plate
  • Planter boxes
  • Sawn structural members
  • Gazebos
  • Permanent wood foundations

Code Acceptance

This wood meets requirements of model building codes for many applications, and code evaluation reports on this wood (treated with either dissolved copper azole, CA-C, or dispersed copper azole, μCu have been issued by National Evaluation Service (ESR-1721). The CA-C treatment is listed also in the standards of the American Wood Protection Association (AWPA) for above-ground and ground-contact applications (Use Categories UC1, UC2, UC3A, UC3B, UC4A, and UC4B). Internationally, it is approved by government and trade agencies throughout Europe and in Australia, New Zealand and Japan.

Model Specifications

To download a model specification for Genuine Wolmanized® Residential Outdoor wood as a modifiable MS Word (2002) document, click here.

Retention Standards

Different applications may require different amounts of preservative protection. Below are requirements for copper azole formulations.

Typical Applications Use Category* CA-C μCA-C
Above Ground 1, 2, 3A, 3B .06 .05
Ground / Fresh Water Contact 4A .15 .14
Sawn Poles & Posts 4B .31** .23

* Presently applies only to CA-C treated wood.
** ICC-ES accepts 0.25 pcf.

AWPA Use Category System

To see a table summarizing applications and corresponding retention levels for Genuine Wolmanized® Residential Outdoor wood, click here. For simplified descriptions of service conditions for AWPA Use Categories, click here.

Building Tips

Whether you hire a contractor or build your project yourself, note: treated wood will last a long time, therefore so will your workmanship. You’ll be happier – and your project will look better – if you take your time and observe the following construction techniques.

  • Make sure that your wood is suited for the intended use. Check the tag on lumber for “above ground” or “ground contact.”
  • Before you begin, lay out your lumber with the best-looking face exposed. Decide which pieces you want for visible areas, and which pieces for understructure.
  • Wolmanized Outdoor Wood Building Tips ImageSeparate deck boards as follows to allow for expansion and contraction. If heavy and wet, separate boards no more than 1/16″ as some shrinkage will occur. If light and dry, separate boards no more than 1/8″.
  • Avoid long spans in construction. The greater the distance between supporting points, the more force developed within the wood as it dries. Also avoid designs with long cantilevers unsecured at one end.
  • Orient embedded support columns so only treated ends are in ground contact.
  • Cover upper ends of posts with post caps or cut them at angles to shed water.
  • For maximum protection, it is recommended to coat cut ends, drill holes, and other imperfections with a topical Copper Naphthenate wood preservative such as Wolman Woodlife Copper Coat or equivalent. Additionally, original factory ends of posts should be put into the ground to insure longest life as cuts in pressure treated lumber may expose untreated material to the elements. Cut ends should not be placed in the ground.
  • Use enough screws. Skimping doesn’t pay. Use two screws across a 2 x 4 and three across a 2 x 6. Drive screws at a slight angle toward each other.
  • Screws and other hardware should be hot-dipped zinc-coated or equally well protected material. Otherwise, weather may cause them to rust, leaving streaks.
  • To reduce splitting, drill a pilot hole about three quarters the diameter of the nail.
  • Use 3 1/4” screws on nominal two-inch decking. Use two at each joint with 2 x 4s laid flat; use three for 2 x 6s laid flat. 3″ screws are recommended for 5/4″ decking.
  • Lumber wider than six inches should not be used as a flat surface. Wide, flat boards are subject to ponding of rain water, which can lead to cupping problems. It is better to use two 2 x 6’s than one 2 x 12.
  • If a board is bowed, install it with the crown up. Gravity and the weight of people and furniture will flatten it.
  • If a board has a slight bend to it, it sometimes can be straightened as it is screwed in place.
  • Click here for a Mississippi State report on ‘Treating’ Treated Wood.

Recommended Hardware

Hot-dipped galvanized fasteners (meeting ASTM A 153) and connectors (ASTM A 653 Class G185 sheet), or better, are recommended.

For Permanent Wood Foundations and corrosive environments, such as areas with saltwater spray, use 304 or 316 stainless steel. Aluminum should not be used in direct contact with this wood, unless an adequate physical barrier separates the aluminum from the wood or the manufacturer ensures the performance of the aluminum product.

For indoor applications, while galvanized fasteners are preferable, the use of nongalvanized 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 1/2″ 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.

Additional information on the corrosion of fasteners and connectors used with alternative pressure treated wood:

Maintenance Tips

No maintenance is needed to renew resistance to fungi and termites. Wolmanized® wood has a lifetime limited warranty against these organisms. However, protection is required to maintain the wood’s appearance against weather. Sun and rain cycles cause stresses in lumber and result in swelling, shrinking, warping, and cracking.

  • To help protect your project against moisture damage, apply an effective brand of water repellent as soon as your outdoor wood project is finished or, for large projects, as sections are completed. Water repellent should be applied every year or two.
  • To revitalize a dingy appearance caused by dirt and mildew, use deck brightener to clean the outdoor wood.
  • To validate the warranty in some states and for some species, apply an end-cut solution.

Painting & Staining

You can stain or paint Wolmanized® wood. You can also coat this wood with a water repellent; in fact, we highly recommend it. The best way to tackle these jobs depends on the wood you have, its exposure, and the coating you plan to use. Many light-colored latex paints can be used successfully following brush-application of an oil-based primer. Primer should not be applied by sprayer, nor should coatings be used if their manufacturer advises against a primer. Always follow the manufacturer’s directions and take special care in sealing end grain, holes and other penetrations with the primer.

How long must you wait before the wood is dry internally?

The time it takes for wood to dry out depends on the climate and the wood’s exposure. In summer in the American southwest, deck lumber open to sunshine can dry in a few days. In cool, damp weather or when shaded by an overhanging roof or tree, it will take much longer for wood to dry. As a fairly safe average, we recommend waiting six months before applying paint.

Typical treated wood

When wood is pressure-treated, it is saturated with a liquid solution of preservative diluted in water. In a typical situation, the wood you buy is still somewhat damp.

PAINT –  Do not apply paint until the wood is dry, both on the surface and internally. Otherwise, as the wood dries out, escaping moisture will cause blisters and poor adhesion in the paint. We recommend a six month waiting period before applying paint (see more below). Once the wood is dry, the procedure for painting treated wood is no different from that for painting untreated wood. Application of a primer is suggested for best results. (We recommend against using paint on deck flooring because frequently used pathways, such as from the steps to the door, will become worn.)

STAIN – Some stains are heavily pigmented and form a film, just as paint does. The recommendations for their application are the same as those for paint, including our advice against using them for the floor of a deck. Most stains, however, are more transparent and do not block moisture movement. There are other differences, though. Stains may be oil-based or water-based. Some formulations can be used immediately; others perform best when the wood is allowed to dry for a while. Best advice: follow the stain manufacturer’s instructions.

WATER REPELLENT – Most water repellent brands say that it is okay to apply a water repellent without delay, which is ideal timing. For other brands, a slight delay is recommended. Again, it is best to follow the manufacturer’s instructions.

Treated wood with built-in water repellent

To protect against moisture damage, some Wolmanized® Outdoor wood has water repellent as well as preservative, as does Thompsonized® Wood. The water repellent slows down the rate at which the wood absorbs and releases moisture.

PAINT & STAIN – The recommendations are the same as above, but it may take longer for the wood to dry out. Therefore, the delay may be longer. For instance, we recommend waiting 30 days before applying an oil-based product to Thompsonized® Wood, and waiting a year before using a water-based stain.

WATER REPELLENT – With water repellent treated wood, an initial coating of topical water repellent is not necessary. For Wolmanized® wood with water repellent, you don’t need a water repellent coating for a year, but apply it annually thereafter.

Treated wood that is re-dried after treatment

In some areas you can buy treated wood that is Kiln Dried After Treatment (KDAT) or Air Dried After Treatment (ADAT). In these processes, moisture is removed from the wood before shipment to a lumber dealer. KDAT or ADAT will be marked on each piece of wood on either the end tag or an ink stamp.

PAINT, STAIN, WATER REPELLENT – The moisture content of the wood is already in balance with atmospheric moisture levels, so coating can proceed immediately.

Download Full GHS -Compliant Safety Data Sheet (SDS) Here:

Current Northeast Treaters Wolmanized uCA-C Safety Data Sheet

Common Sense Safety Precautions

The following precautions should be taken both when handling the preserved wood and in determining where to use and dispose of it. Many of these precautions also apply to untreated wood and other building materials.

Use Site Precautions

  • All sawdust and construction debris should be cleaned up and disposed of after construction.
  • Do not use treated wood under circumstances where the preservative may become a component of food or animal feed. Examples are mulch from recycled treated wood, cutting boards, counter tops, animal bedding, and structures or containers for storing animal feed or human food.
  • Only treated wood that is visibly clean and free of surface residue should be used where contact is likely.
  • Do not use treated wood for construction of those portions of beehives which may come into contact with honey.
  • 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 docks or bridges.

Handling Precautions

  • Dispose of treated wood by ordinary trash collection. TREATED WOOD SHOULD NOT BE BURNED in open fires or in stoves, fireplaces or residential boilers because toxic substances may be produced as part of the smoke and ashes. Treated wood from commercial or industrial use (e.g., construction sites) may be disposed of by complying with local landfill rules or burned in commercial or industrial incinerators or boilers when done in accordance with state and federal regulations.
  • Avoid frequent or prolonged inhalation of sawdust from wood, treated or untreated. When sawing, sanding and machining wood, wear a dust mask. Whenever possible, these operations should be performed outdoors to avoid indoor accumulations or airborne sawdust.
  • When power-sawing and machining, wear goggles to protect eyes from flying particles.
  • Wear gloves when working with wood. Use proper techniques when lifting. After working with wood, and before eating, drinking, toileting, and use of tobacco products, wash exposed areas thoroughly.
  • Because preservatives or sawdust may accumulate on clothes, they should be laundered before reuse. Wash work clothes separately from other household clothing.

Note: The active ingredients in copper azole are copper and tebuconazole.

Is Wolmanized® Outdoor wood safe?

A comprehensive study of occupational, residential and playground uses of wood pressure-treated with copper azole preservative has concluded, “no adverse health effects are expected.”  Believed to be the first independent human health risk assessment of the new generation of treated wood products, the study was commissioned by Bayer Chemicals Corporation (now Lanxess Corporation) and conducted by Gradient Corporation, a noted environmental and toxicological consulting firm. Lanxess manufactures Preventol® A8, which is an azole fungicide used in the copper azole preservative.

A number of different exposures (e.g., inhalation, incidental ingestion, exposure to the skin) were assessed and aggregated in each of these scenarios. The highest potential risk was estimated to be 17 times lower than the level that the EPA uses as a safety benchmark, thus demonstrating the safety of copper azole-treated wood. View the report summary (PDF).

Unless otherwise noted, these files are in PDF file format and require a PDF reader to view. You can download Adobe Reader for free from the Adobe website.

Brochures

Warranties

ES Reports

Model Specifications

 1.  Can I paint or stain Wolmanized® Outdoor wood?
Yes, you can stain or paint Wolmanized® wood. You can also coat this wood with a water repellent; in fact, we highly recommend it. The best way to tackle these jobs depends on the wood you have, its exposure and the coating you plan to use. For detailed information click here.

2.  How long must you wait before the wood is dry internally?
The time it takes for wood to dry out depends on the climate and the wood’s exposure. In summer in the American southwest, deck lumber open to sunshine can dry in a few days. In cool, damp weather or when shaded by an overhanging roof or tree, it will take much longer for wood to dry. As a fairly safe average, we recommend waiting six months before applying paint.

3.  What maintenance is needed for the product?
No maintenance is needed to renew resistance to fungi and termites. Wolmanized® wood has a lifetime limited warranty against these organisms. However, protection is required to maintain the wood’s appearance against weather. Sun and rain cycles cause stresses in lumber and result in swelling, shrinking, warping, and cracking.

  • To help protect your project against moisture damage, apply an effective brand of water repellent as soon as your outdoor wood project is finished or, for large projects, as sections are completed. Water repellent should be applied every year or two.
  • To revitalize a dingy appearance caused by dirt and mildew, use deck brightener to clean the outdoor wood.

To validate the warranty in some states and for some species, apply an end-cut solution.

4.  Where do I get Wolmanized® Outdoor wood?
Contact us today!

5.  Is Wolmanized® Outdoor wood safe?
A comprehensive study of occupational, residential and playground uses of wood pressure-treated with copper azole preservative has concluded, “no adverse health effects are expected.” Believed to be the first independent human health risk assessment of the new generation of treated wood products, the study was commissioned by Bayer Chemicals Corporation (now Lanxess Corporation) and conducted by Gradient Corporation, a noted environmental and toxicological consulting firm. Lanxess manufactures Preventol® A8, which is an azole fungicide used in the copper azole preservative.

A number of different exposures (e.g., inhalation, incidental ingestion, exposure to the skin) were assessed and aggregated in each of these scenarios. The highest potential risk was estimated to be 17 times lower than the level that the EPA uses as a safety benchmark, thus demonstrating the safety of copper azole-treated wood. View the report summary (PDF).

6.  How is Wolmanized Outdoor wood produced?
Wolmanized® wood is made in a pressurized cylinder using a closed system that recycles excess preservative for future use and releases no air pollutants nor wastewater. Only licensed producers who follow stringent quality control measures make Wolmanized® wood. The basic treating process is simple and highly controlled.

  1. Lumber, timbers, or plywood is loaded onto small rail or tram cars.  The trams are moved into a large, horizontal treating cylinder.
  2. The cylinder door is sealed and a vacuum is applied to remove air from the cylinder and the
    wood cells.
  3. Preservative solution is then pumped into the cylinder.
  4. The pressure is raised to about 150 pounds per square inch, forcing the preservative into the wood. Treating time varies depending on species of wood, commodity being treated and the
    amount of preservative to be impregnated.
  5. At the end of the process, excess treating solution is pumped out of the cylinder and back to
    a storage tank for later re-use.
  6. A final vacuum removes excess preservative from wood cells. The cylinder door is opened and the trams are pulled out. The wood is wet, so it is kept on a concrete pad until any dripping ceases.

7.  Does Wolmanized® Outdoor wood come with a water repellent?
A compatible water repellent additive to provide built-in moisture protection is available in some areas. (Also, Thompsonized® Wood is high grade material that has factory-applied waterproofer.

8.  What are the environmental benefits of Wolmanized® Outdoor wood?
Unlike plastics, steel and concrete, Wolmanized® wood is made from a renewable resource grown on managed timberlands. It requires less energy to produce than plastics and offers greater insulation value; and, because of its lighter weight, preserved wood can often be installed with lighter equipment which has less environmental impact. Wood products reduce greenhouse gasses, and preservative treatment extends their service life.

9. What are the strength properties of Wolmanized® Outdoor wood?
This wood has the same strength properties of untreated wood of the same species, grade and moisture content.

10. What hardware is recommended for Wolmanized® Outdoor wood?
For detailed information on recommended hardware for Wolmanized® Outdoor wood, please click here.

11. How do I dispose of Wolmanized® Outdoor wood waste?
Wolmanized® wood waste, such as scraps, broken boards and sawdust, can be disposed of with ordinary trash collection. Neither the wood nor the preservative residues are considered hazardous wastes. If a particular landfill has restrictions against traditional treated wood, it may accept Wolmanized® Outdoor wood. Treated sawdust and shavings are not recommended for composting, mulching, or animal bedding, and the wood should not be burned except in approved commercial incinerators.

Dimension Lbr GC W/WR

8 10 12 14 16 18 20 24
2×4 #1 Prime * * * *
2×6 #1 Prime * * * *

Dimension Lbr GC

8 10 12 14 16 18 20 24
2×4 #1 * * * * *
2×6 #1 * * * * * * *
2×8 #1 * * * * * * * *
2×10 #1 * * * * * * * *
2×12 #1 * * * * * * * *

Dimension Lbr GC

8 10 12 14 16 18 20
2×4 #2 * * * * *
2×6 #2 * * * * * * *
2×8 #2 * * * * * * *
2×10 #2 * * * * * * *
2×12 #2 * * * * * * *

Decking W/WR GC

8 10 12 14 16 18 20
5/4×4 Prem * * * * *
5/4×6 Prem * * * * * * *
5/4×6 C&Btr * * * * * * *
5/4×6 STD * * * * * * *

Timbers GC

8 10 12 14 16 18 20 24
4×4 #1 * * * * *
4×4 #2 * * * * *
4×6 #2 * * * * * * *
4×8 #2 * * * * * * *
6×6 #2 * * * * * * * *
6×8 #2 * * * * * * * *
8×8 #2 * * * * * * * *
8×8 RGH * * * * * * * *

Additional sizes, longer lengths and heavier retentions available.

Boards AG

8 10 12 14 16 18 20
1×4 D Grade * * *
1×6 D Grade * * *
1×8 D Grade * * *

Balusters W/WR

36″ 42″ 48″ 96″ 42″ A1E
2×2 #1 * * * * *
2×2 Clear * * * * *

Plywood GC

CDX UL
1/2 * *
5/8 * *
3/4 * *

Stringers GC

3 step *
4 step *
5 step *

Pressure Treated Products