Borates are effective preserva- tives against decay fungi and insects. Albany, CA 94710 Our Natural Select, C-A treated Doug Fir contains no chromium or arsenic. Grade is a description of the quality of a given species. Our Natural Select, C-A treated Doug Fir contains no chromium or arsenic. It must meet a minimum 1/12-grain slope and have all knots sound encased. Boards will contain no splits larger than 1.5 times width of board. This category contains our range of Green Pressure Treated Softwood Pergola Kits, a cheaper alternative to our Untreated Larch/ Douglas Fir Pergola Kits. The treatment process involves placing a load of lumber in a huge cylindrical chamber called a retort with a door on one end that can be sealed airtight, and then forcing waterborne chemicals into the wood under pressure. Several species of wood can be treated, but a regionally available species usually predominates in any particular locale. Be sure to obtain wood treated for the application you have in mind. We stock 2×4-2×12, 4×4-4×6, and 6×6 in a brownish-red tone to better match our redwood and cedar products. By clicking GO!, you acknowledge that you have read Trex's, Cedar Decking: Prices, Different Types, Maintenance & More, Redwood Decking: Cost, Maintenace & Types of Redwood, Common Wood Defects: Types & Causes of Lumber Issues, Pressure-Treated Wood: Types, Grading Standards & More, ACQ Alkaline Copper Quaternary (Type B or C), ACQ Alkaline Copper Quaternary (Type A or D), PTI Propiconazole-Tebuconazole-Imidicloprid, SBX Inorganic Boron (non-Formosan termites). Our Natural Select, C-A treated Doug Fir contains no chromium or arsenic. Compare; Find My … x 8 ft. #2 and Better Kiln-Dried Heat Treated Spruce-Pine-Fir Lumber (100) Model# 0200352 $ 8 82. 1932. The treatment process involves placing a load of lumber in a huge cylindrical chamber called a retort with a door on one end that can be sealed airtight, and then forcing waterborne chemicals into the wood under pressure. above ground treated wood • Must be used when lumber is less than 6" from the ... 2 in. It is possible that some boards will become so deformed that they will be unusable. Hazards. Not suitable for deck construction. It is strong and stiff. Our Natural Select, C-A treated Doug Fir contains no chromium or arsenic. It might crack, warp, or shrink, but it won't rot or prove tasty to insects. Treated wood is generally available as dimensional stock in 2x4s, 2x6s, 4x4s and 2x2s for rail components. 2x8s, 2x10s and 2x12s for joists, stair stringers and beams. determine (a) the time required for treated 2-in. Furthermore, each preservative has its individual retention level for these applications. Pressure Treated Douglas Fir Archives - The Lumber Baron | Redwood Lumber, Western Red Cedar Lumber and Reclaimed Wood in the Bay Area and throughout California. 6x6s for support posts and plywood. Coastal Lumber carries primarily pressure treated Douglas Fir. The predominant species of treated wood is a regionally available softwood. Premium - Highest grade for ¾ radius edge decking. As lumber moves through a mill, grading inspectors review each piece and separate them onto different paths. Sat 9am-3pm Use Category Brief Description UC1 Interior Dry UC2 Interior Damp UC3A Exterior Above Ground, Coated with Rapid Water Runoff UC3B Exterior Above Ground, Uncoated or Poor Water Runoff UC4A Ground Contact, General Use UC4B Ground Contact, Heavy Duty UC4C Ground Contact, Extreme Duty UC5A Marine Use, Northern Waters (Salt or Brackish Water) UC5B Marine Use, Central Waters (Salt or Brackish Water) UC5C Marine Use, Southern Waters (Salt or Brackish Water) UCFA Interior Above Ground Fire Protection UCFB Exterior Above Ground Fire Protection. Pressure-treated lumber is ideal for outdoor construction as it has a long, useful life span and is much less expensive than alternatives. It encompasses a group of western species. Number 1- Will contain no splits larger than the width of the board. Hands down the best pressure treated Doug Fir on the market. Knots may not be larger than 2 ¾".