Although treated wood is protected against decay and termite attack, the application of a water-repellent sealer to all exposed wood surfaces is recommended upon completion of construction. This often occurs because pressure treated wood is tightly bundled in stacks when it is shipped to the lumberyard. PTI pressure treated wood products are relatively new to the market place and are not yet widely available in building supply stores. So for now, that leaves the options of staining the wood, or applying a clear finish and letting the wood gray. Since I like the color a little weathered there was no need to pressure wash or chemically clean the deck. Figure 3. Protecting wood from the effects of moisture is the ultimate goal of a finish.
I had a customer use an oil stain on a wet Pressure Treated deck that we built for them—It lasted 1 week then began to peel like a bad sunburn. PAINT & STAIN — The recommendation for allowing the wood to dry is similar, but it may take longer for the wood to dry. Severe Weather brand pressure-treated wood needs no additional water repellent sealer for up to two years. The maximum penetration of 2 mm (0.079 in) is not sufficient to protect wood in weathered positions. This process was developed in the 19th century by John Kyan The depth and retention achieved depends on factors such as species, wood moisture, preservative and soak duration.
If the deck is not coated with in a week of being installed you may notice the wood turning gray. Olympic exterior stain can be found at Lowe’s and independent paint and hardware dealers. Through experience and experimentation, wood preservatives commonly used today have proved to be highly toxic to wood destroying organisms. Mold, although unsightly and a potential source of airborne toxins is not in itself a very great threat to wood structure and the soundness of wood members. CCA gives wood a greenish tint that eventually weathers to gray, although a new process has been developed giving CCA treated wood a brown color.
The current formulations of preservatives have been shown to keep wood solid for two decades or longer, depending on where the wood will be located and how much preservative has been forced into it. Pressure-treated wood in contact with the ground needs the most protection, and will rot in just a few years if you use the wrong grade. Wet treated wood: The most common kind is still wet when you buy it. It’ll be noticeably heavier than kiln-dried lumber.
The water repellent slows down the rate at which the wood absorbs and releases moisture. I use to paint all the time and I know how good Kilz is to make paint always cover good. Stack wet lumber on a flat surface such as a driveway or patio, use spacers between boards to let air circulate and check the wood for weight and by touch for moisture. Besides the fact that most architects and engineers specify AWPA Standards for treated wood, AWPA Standards are the only wood treatment standards listed directly in the IBC and IRC. This bulletin will provide the purchaser of treated wood with the information necessary to select treated wood with a special emphasis on landscape timbers.
The preservatives used in Top Choice Treated Lumber were the first to receive a Green Approved Product Certification from the National Association of Home Builders® Research Center under the National Green Building standard. This is done by reacting the wood with acetic anhydride, which comes from acetic acid When free hydroxyl groups are transformed to acetyl groups, the ability of the wood to absorb water is greatly reduced, rendering the wood more dimensionally stable and, because it is no longer digestible, extremely durable.
Even zero- and low-VOC latex paint formulas can release fumes for months or even years, so if you paint, plan to do so in the fall, which will give fumes plenty of time to dissipate throughout the winter. Besides, I figure by the time I mask off the surrounding area I do not want painted, I can just as quickly use a paint brush or roller. Many people think its a good idea to burn up old scrap wood, like an old deck or old plywood.
According to the manufacturers of the so-called oil-modified formulations, their coverage is similar to that of traditional water-based products, while at the same time they are easily absorbed into the wood. On December 31, 2003, the U.S. wood treatment industry stopped treating residential lumber with arsenic and chromium ( chromated copper arsenate , or CCA).
In warmer climates where children can be exposed for more days throughout the year the risk increased to 2.3 cancers in 100,000 for children with play sets only, to 4.2 per 100,000 if an outdoor deck is also present. If I was to paint it, I would use a 100% acrylic primer, only for the fact that it will allow it to breathe (dry) a sight better than oil would. I’m reading about people dipping fence posts in roofing tar and all sorts of things.
Steeles Paint is a Toronto based paint store area retailer of Benjamin Moore paints , Pittsburgh Paints , Goudey Stains & Lacquers, Old Masters wood products, CanLak Lacquers, Coronado Paints, Sikkens Exterior wood finishes and PARA Paints premium quality architectural paints. The surface of the wood should be clean, dry (25%maximummoisture content) and free from loose material. For optimal performance of paint and stain coatings, allow treated wood to dry prior to application. To obtain better anchorage of the Wood Filler in deep holes (greater than 25mm or 1 inch), fix screws into the bottom of the holes leaving the heads and stems exposed inside the holes.
Viance Residential Treated lumber products (Ecolife & Preserve) carry a Lifetime Limited Warranty against fungal decay and termite attack. Front porch with custom ceiling, cedar posts, stone columns and wood shutters – and especially low windows. Wolman RainCoat, made by one of the big names in pressure-treating, is a widely sold water repellent that is a good choice for use on pressure-treated wood, although it can also be used on other types of wood. Try to avoid oil-based products if the deck doesn’t get a good amount of sunlight.
Treated woods in critical applications are specially treated with high retentions to get maximum service life from each piece. Don’t forget if you have a deck that needs refinishing, you can call us to set up an appointment. Dirt, stains and other debris on the wood will interfere with the absorption of the wood stain. The objective of a wood preservative is to contaminate or change the form of the fourth condition necessary for fungal growth, the food source. By this process the pressure inside the impregnation cylinder changes between pressure and vacuum within a few seconds. As I said in the other” tread I have not found painting to add that much more to longevity.
My husband and I are in the midst of building our deck and so many times that has come up when trying to make the decision in what wood to use. Their interior hull surfaces are frequently to my knowledge, and after much reflection of what I’ve seen in my years as a boat captain, left un painted. This lessens the chance of splitting the board while fastening it. Even if it doesn’t split when you initially fasten it down without predrilling, it will very likely do so later as the wood dries out. Refinishing a deck with a non-film finish is usually a matter of cleaning, doing minor repairs, and then recoating.
When anticipating the use of steel connectors and fasteners with treated lumber, users should consult our Preservative Treated Wood Technical Bulletin (PDF), the treated lumber chemical supplier, and the wood treater for specific recommendations. These include an extended coatings life due to acetylated wood acting as a more stable substrate for paints and translucent coatings. The oil based paints will not allow the wood to breathe and this causes checking, warping and peeling of the paint as the pressure treated liquids try to dry. They provided some dineroÂ for this project but the staining tips, ugly work clothes and funny facesÂ are from me.
By nature of its make-up, pressure-treated lumber does not need protection from the elements, so applying an opaque paint or stain is gilding the lily. I used this technique on the deck of a former house, and on the stairs leading from my kitchen to the patio at the present one. Producers generally add a color agent or a trace amount of copper solution so as to identify the wood as pressure treated and to better match the color of other pressure treated wood products.
Here is the photo I was trying to embed in my message on 9/6 to @Andrew S. Of course I forgot to confirm that exact type of SW paint was used. Pentachlorophenol, also known as penta or PCP, must be dissolved in petroleum oils or more volatile organic solvents such as mineral spirits, liquefied petroleum gas, and methylene chloride in order to treat wood.
When painting any pressure treated posts, plywood or even decking, you need to let the wood breath. If paint is to be used, liberally brush the surface plus all ends and joints with a paintable water-repellent/sealer preservative and allow the surface to dry for at least two warm, sunny days before painting. Wood is placed inside a sealed container, and vacuum pressure is applied to force the preservatives into the wood. AWPA’s Standards are universally specified for wood preservation in the US, and are recognized worldwide.