www.southernpine.com has the tables to determine this. The product in Home Depot Stores will be #2 PRIME grade.
Don't build directly on the ground. It will rot in a few years even if it's treated lumber.
Yes. The retention of preservative gets lower as you get further into the interior of the piece. Very light sanding should not have much effect however.
The 2 in. x 6 in. x 8 ft. #2 Prime Pressure-Treated Lumber is not kiln dried after treatment. Please contact your local PRO associate to discuss special order opportunities.
There is a chance you'll be eating arsenic, copper and other carcinogens that will leach into your soil and be absorbed by your plants.
WeatherShield is a brand of pressure-treated lumber sold at The Home Depot. It’s has a lifetime limited warranty against rot and termites when used in the proper application.
Lumber is treated and shipped within a few days of the process. Because the moisture content is still very high when it is shipped, it drys slowly over time when stored indoors.
Yes. MCA-treated lumber is safe and acceptable for indoor use.
Typically treated lumber decking at The Home Depot has a high moisture level and can be installed directly next to each other or with a small gap (side by side). Install with no gap from end to end.
The grade and design values are based on the SPIB Grading Rules. This #2 lumber is recommended for most general construction uses where moderately high design values are required. All knots are well-spaced — one main factor when determining design strength.