What is UC4B lumber?
UC4B is defined as Heavy Duty use, and includes products such as permanent wood foundations, timber posts and building poles. UC4C is defined as Extreme Duty and products products such as foundation and fresh water pilings as well as utility poles.
What is the best wood for ground contact?
Cypress wood is the best choice for underground use. Its natural resistance against moisture makes it perfect for below-ground use.
What is ground contact lumber treated with?
Today, pressure-treated lumber is treated with a range of inorganic chemicals rather than arsenate. Other common chemicals used are Alkaline Copper Quaternary (ACQ), Copper Azole (CA), Sodium Borate (SBX), and Micronized Copper Quaternary (MCQ).
What is WeatherShield wood used for?
One of the smarter choices in pressure-treated lumber is the WeatherShield brand. In addition to offering the usual rot and insect protection, these products are less corrosive to nails, screws, and other fasteners.
What is the best grade of pressure treated wood?
The best pressure treated wood for decks is Select, #1 or #2 grade wood. Within all grades, there are planks that will be freer of blemishes and knots and may be called premium. Decking materials such as 2×6 and 5/4×6 frequently are of better-looking #1 and #2 lumber.
Does pressure treated wood reduce strength?
Pressure treated lumber is no stronger than untreated lumber. The difference between the two is that pressure treated lumber will resist the elements better than untreated due to chemical preservatives added, and so will maintain its integrity in conditions that would cause normal wood to rot.
How long will a pressure treated 6×6 last in the ground?
5 Answers. A PT post will last a long time in concrete, maybe 5 to 10 years in soil alone.
Is Cedar OK for ground contact?
Due to its chemical properties, cedar is naturally weather-resistant and repels most bugs. Don’t put cedar where it’s in direct contact with the ground or set it in concrete. It may last for a while, but eventually it will rot and deteriorate.
What is the difference between ground contact and pressure treated?
Pressure-treated wood is softwood lumber, typically southern yellow pine, that’s been chemically treated to resist rot, decay and termites. Lumber treated to “Ground Contact” has a high chemical retention level and can be placed directly on or in the ground with better protection against rot or decay.
Is WeatherShield wood safe for vegetable gardens?
Yes, the “new” pressure treated wood is safe for use for raised garden frames… with a few precautions! Up until 2003, the most common preservative used for pressure treated wood was chromated copper arsenate (CCA), a compound using arsenic as its primary rot protectant.
What does WeatherShield mean?
Weather shield means a device which is attached to a floating roof to protect the fabric of a liquid-mounted or vapor-mounted primary seal from weather and debris, thereby generally providing a longer primary seal life.