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The United States Environmental Protection Agency has announced an industry-supported phase out of CCA treated lumber for residential uses including residential fencing, play structures, decks, picnic tables, landscaping timbers, patios, walkways and boardwalks. New labeling requirements specifying no use of CCA will be allowed by the wood treating industry for the above purposes and will be in effect after December 31, 2003.
Click here Read more about Chromated Cooper Arsenate (CCA) Treated Wood
EPA Approved Pressure Treated Preservatives
The YellaWood™ wood preservative from Osmose, Inc. is a waterborne, alkaline copper quaternary preservative system developed to provide long-term protection of wood exposed in exterior applications. The YellaWood™ system is based on the well established effectiveness of copper combined with an organic quaternary compound and is applied to wood by pressure treatment. Copper and quaternary compounds are effective
fungicides and termiticides. Together they provide protection from a broad spectrum of fungi and termites. Quaternary compounds are commonly used as swimming pool additives, disinfectants and sanitizers and have antibacterial properties. The active ingredients in YellaWood™, copper oxide and quaternary compounds are dissolved in an alkaline carrier. Depending on the desired product application, wood species, and exposure hazard, the YellaWood™ preservative system may be formulated with a number of specialty additives such as water repellents to enhance product performance.
Characteristics of YellaWood™ Preserved Wood Product
Properly treated and processed YellaWood™ brand products are similar to CCA treated wood products - both are pressure treated, long lasting, durable, clean to the touch and have no objectionable odor. More than a decade of field test performance and commercial use worldwide establishes the proven effectiveness of the YellaWood™ preservative technology against termites and fungal decay.
YellaWood™ brand preserved wood products offer termite and fungal decay protection similar to that of CCA treated wood. Ground contact testing of treated stakes confirm that while untreated SYP stakes fail in less than 5 years, stakes preserved with YellaWood™ preservatives perform similarly to CCA treated stakes.
Product Introduction
YellaWood™ Weathering Information
Freshly treated YellaWood™ brand products begin with a familiar greenish color and will over time turn to a light tan/brown color upon exposure to sunlight. As with most outdoor wood products, YellaWood™ brand products will eventually fade to gray over time.
Lifetime Residential / Agricultural Limited Warranty and
Limited 15 Year Warranty on Fence Boards
A Lifetime Residential and Agricultural Limited Warranty is offered on YellaWood™ brand products for material used in residential and agricultural applications, plus a Limited 15 Year Warranty is offered on YellaWood™ fence boards. See warranty for specific provisions.
15-Year Fence Boards Warranty
Regulatory Requirements
The preservative technology in YellaWood™ brand products is registered by EPA as a non-restricted use pesticide and does not require Proposition 65 labeling in California. YellaWood™ brand products as described in National Evaluation Report - NER# 628, meet all major model building code requirements.
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Site Layout
Taking time to layout the fence carefully can save time and frustration in the long run. An incorrect measurement now could result in problems later. Make provisions for the widths of the fence panels and gates so you won't end up with odd sized bays that can complicate installation. Some types of preassembled panels like shadowbox and picket can be cut to fit smaller bays if you end up with an odd-sized section. Other types, like panels with horizontal woven elements, for example, would be difficult if not impossible to cut to size. Take extra special care if you are using these types of panels.
•Stake out your fence line from beginning to end, including corners and any gates.
•Tie a string tautly between corner post locations. This will define the line along which the line posts will be placed.
•Be sure to measure your panels before performing this next step because all of them are not exactly 4, 6 or 8' long. Then, using the same measurement as the length of your panels, stake out the line post locations. To do this, measure "on center" from each corner post (from center to center of each post instead of from the edges) along the layout lines. Mark each post location with a stake. Ensure that the stakes are touching the layout string so the posts will be in line. Don't forget to take gates into account at this stage. Since you will be custom building your gates, their widths can vary. This allows some flexibility in layout even though you're working with preassembled fence panels
Digging Postholes
Using a posthole digger or power auger, dig the holes 10-12" wide and 6" inches deeper than needed. A good rule of thumb is to put 1/3 of the post in the ground. Main and gate posts should be set 6" deeper for extra strength. Keep the height of your fence panels in mind when digging your postholes.
Backfill each hole with 6" of gravel to drain water away from the bottom of the post.
Setting The Posts
Install end and corner main posts first. Tie a string between these posts along the fence line. This will establish a reference so you can make sure the line posts are set in line.
Brace the posts using 4' sections of 2x4's nailed to the post diagonally and then nailed to stakes in the ground. This will keep them straight while the concrete sets.
Brace the posts using 4' sections of 2x4's nailed to the post diagonally and then nailed to stakes in the ground. This will keep them straight while the concrete sets.
Check each post to make sure it's plumb using a level on two adjacent sides.
Fill holes with concrete mix and follow all package instructions. Prod the mix with a stick while filling to reduce any air pockets. Overfill holes at the top. Using a trowel, slope the concrete away from the post to prevent water from collecting around it. If you want to conceal the concrete, pour it to within a few inches of the top of the hole and cover it with soil after the concrete has set.
Before concrete sets, check plumb and alignment again and make any necessary adjustments. Allow concrete to set 24-48 hours before installing fence panels.
Cutting Posts To The Proper Height
When setting posts on a slope, set them so they're taller than you need for the panel so you can cut them to height just before the panels are hung. Some people prefer to use this method for all of their posts.
An easy way to make your post heights uniform on level ground is
to run a string at the desired height from corner post to corner post keeping it taut. Mark each line post at the string line and cut off the tops of the posts.
Attaching Panels
You will need help when attaching the fence panels, so plan appropriately.
Place each panel between the posts so that the ends of the panel come to rest in the center of the posts. Preassembled fence panels have a top and bottom support rail between the frame to which the pickets are attached. Use a level to align the top rail horizontally. Use stainless screws or l8d to 20d galvanized nails to attach the panel to the post. Attach the panel through the top and bottom rails. Have someone support the posts while you're nailing.
If it is necessary for some reason that two panels must but together between posts (perhaps there is something in the way that prevents the setting of a post in the appropriate place, for example), attach a 3' cleat across the joints of the rails to provide additional support.
Fence Finishing And Maintenance
Your fence isn't complete until you've treated it with a protective finish. Even pressure treated wood will perform better with a finishing treatment. Your finish coat will be determined by the look you want to achieve as well as the type of wood you use. There are three options in finishing treatments: paint, stain and waterproofing sealer.
Paint seals and protects the surface and can add a splash of color or coordinate with your home. Before painting, wood should be clean, dry and primed with oil-based primer. Use a durable exterior latex paint.
Stain provides a durable finish coat while still allowing the look and texture of the wood to come through. Semitransparent stains are best on new wood and give an even appearance and hint of color while allowing the grain to show through. Heavy or solid-color stains cover the grain but keep the texture. They're ideal for older wood that needs a face-lift.
Waterproofing sealer or repellent is the choice for woods such as spruce, birch, hickory, red oak and poplar that are not resistant to decay and exposure to weather. The sealer/repellent will help prevent rain and moisture from soaking into the wood. These need to be applied annually to preserve the natural wood color.
