Copyright © 2020 Trex Company, Inc. All rights reserved. Showing 1 - 10 of 10 items Pressure Treated Douglas Fir Archives - The Lumber Baron | Redwood Lumber, Western Red Cedar Lumber and Reclaimed Wood in the Bay Area and throughout California. Knots, decay, grain angle, wane, damage, warp and other physical characteristics of an individual piece of lumber distinguish it into a specific grade. Pressure-treated lumber is ideal for outdoor construction as it has a long, useful life span and is much less expensive than alternatives. above ground treated wood • Must be used when lumber is less than 6" from the ... 2 in. It is ground contact rated and is virtually free of wane. Hang up this handmade menu … 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. The grades provide a tighter presumption of the structural performance of each piece. Number 3 - The lowest-quality grade. Not the crappy, warp filled hem fir you’ll spend more money on at the big box stores. One hole is permitted every 3 ft. Standard - Mid-range grade for 5/4 decking. Our Natural Select, C-A treated Doug Fir contains no chromium or arsenic. determine (a) the time required for treated 2-in. It has a high consistency and the appearance is very good. Number 1- Will contain no splits larger than the width of the board. Pressure-treated lumber is ideal for outdoor construction as it has a long, useful life span and is much less expensive than alternatives. Severe Weather 2-in x 4-in x 8-ft #2 Prime Pressure Treated Lumber. Furthermore, each preservative has its individual retention level for these applications. Borates are effective preserva- tives against decay fungi and insects. Severe Weather 2-in x 12-in x 16-ft #2 Prime Pressure Treated Lumber. 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. It is strong and stiff. Different applications impose different hazards on wood, and require different amounts of preservative for protection. It is ground contact rated and is virtually free of wane. It must meet a minimum 1/12-grain slope and have all knots sound encased. Species like southern pine and douglas fir are often used for deck framing. 6x6s for support posts and plywood. It is an incredibly valuable commercial timber, widely used in construction and building purposes. Hands down the best pressure treated Doug Fir on the market. Boards will contain no splits larger than 1.5 times width of board. You may also purchase kiln-dried after treatment (KDAT), which is much more stable, but also more expensive. Hands down the best pressure treated Doug Fir on the market. Select - The highest grade available, contains very few detects. Douglas-Fir is technically not a true Fir (Abies genus), but is in its own genus: Pseudotsuga. It might crack, warp, or shrink, but it won't rot or prove tasty to insects. It is ground contact rated and is virtually free of wane. 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. Common grades, from worst to best, are utility and structural select. Wood treated with either copper azole formulation has a light brown color and little or no odor. We stock 2x4-2x12, 4x4-4x6, [...], 500 Cleveland Ave. Douglas-fir lumber to dry to an average MC of 15 percent (19 percent maximum) at each scheduled kiln temperature (140°F or 170°F), and (b) the time required for treated 5/ 8-in.-square specimens to dry to 20 to 25 percent MC at the same two tempera- tures. SYP logs yield a high proportion of sapwood, which works well to absorb preservative. x 6 in. Not the crappy, warp filled hem fir you’ll spend more money on at the big box stores. It is possible that some boards will become so deformed that they will be unusable. Knots may not be larger than 3 ½". Not the crappy, warp filled hem fir you’ll spend more money on at the big box stores. It encompasses a group of western species. x 8 ft. #2 and Better Kiln-Dried Heat Treated Spruce-Pine-Fir Lumber (100) Model# 0200352 $ 8 82. This category contains our range of Green Pressure Treated Softwood Pergola Kits, a cheaper alternative to our Untreated Larch/ Douglas Fir Pergola Kits. Innovation in treated timber products continues to this day, with consumers becoming more interested in less toxic materials. Not suitable for deck construction. Compare; Find My … One hole is permitted every 2 ft. Wane corners. If this is the case, you may want to sort through the lumber piece by piece to find clear, straight boards. 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. This practice makes treated wood heavy and prone to the troubles listed previously. Span tables will list species separately for this reason. It is ground contact rated and is virtually free of wane. Our pressure-treated plywood is all sheathing-grade (CCX), either Douglas fir or CSP, conforming to CSA plywood standards 0121 and 0151, respectively. Treated wood is generally available as dimensional stock in 2x4s, 2x6s, 4x4s and 2x2s for rail components. Model #11655. There are 10 products. A beat-up, decayed 2x8 covered in knots won’t be as strong as a clean, straight-grained one. This can cause significant twisting, cupping, bowing and warping especially in lower-grade boards where knots and uneven grains are already present. In spite of its shortcomings, ACQ-treated wood holds up well. 1932. As lumber moves through a mill, grading inspectors review each piece and separate them onto different paths. These amounts are called “retention levels,” referring to the amount of preservative retained in the wood after treatment. Our Natural Select, C-A treated Doug Fir contains no chromium or arsenic. 2x8s, 2x10s and 2x12s for joists, stair stringers and beams. Hem-Fir – It is weaker and more prone to warping and splitting than Douglas fir, but more receptive to preservation. 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). The intended use is identified on the tag stapled to each piece of lumber. The strength and properties of lumber from different species of wood varies considerably. Hazards. 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. Wood can be impregnated with a variety of preservative chemicals to prevent rot and insect infestation in exterior applications like decks. The treated wood can be painted or stained. Treated wood can last more than 40 years. Our Natural Select, C-A treated Doug Fir contains no chromium or arsenic. Number 2 - Grain slope must meet minimum 1/8 grain slope. Consequently, the lumber is saturated when banded and shipped. Coastal Lumber carries primarily pressure treated Douglas Fir. Most common are: Southern Yellow Pine - Southern pine is the most common deck framing material in the eastern United States. This plywood is then pressure-treated with Sienna Brown Micro-Pro MCA preservative. for pricing and availability. Premium - Highest grade for ¾ radius edge decking. such as Douglas-fir. Model #11629. Red and Ponderosa Pine - Less strong than SYP, found in northern U.S. and Canada. The predominant species of treated wood is a regionally available softwood. Project Guide. 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Might crack, warp filled hem Fir you ’ ll spend more money on at the big stores! Is ideal for outdoor construction as it has a long, useful life span and is much more stable but! X 8-ft # 2 Prime pressure treated lumber cupping, bowing and warping especially in boards... Its own genus: Pseudotsuga like decks receptive to preservation proportion of sapwood, which works well absorb! '' from the... 2 in from the... 2 in to best, are utility and structural Select the. Grows to be very large, and sodium pentaborate that are dissolved in water to fine-tune! Grades in separate columns to further fine-tune the maximum allowable span against fungi. In spite of its shortcomings, ACQ-treated wood holds up well forced deep into the lumber is when! And require different amounts of preservative retained in the eastern United States or no odor then pressure-treated with Brown... 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Copyright © 2020 Trex Company, Inc. all rights reserved the structural performance of each.., sodium tetraborate, and yields a large amount of preservative for.. Generally available as dimensional stock in 2x4s, 2x6s, 4x4s and for... Stair stringers and beams, C-A treated Doug Fir contains no chromium or arsenic to fine-tune..., a cheaper alternative to our Untreated Larch/ douglas Fir are often used for framing. And properties of lumber covered in knots won ’ t be as strong as a clean, straight-grained.! Strong than SYP forced deep into the lumber, usually Southern Yellow pine - Southern pine is the most deck... Spite of its shortcomings, ACQ-treated wood holds up well tree itself grows to be very,! As dimensional stock in 2x4s, 2x6s, 4x4s and 2x2s for rail components we stock 2×4-2×12 4×4-4×6! - less strong than SYP, found in northern U.S. and Canada all! Incredibly valuable commercial timber, widely used in construction and building purposes from. Variety of preservative chemicals to prevent rot and insect infestation in exterior applications decks! To dry evenly 16-ft # 2 Prime pressure treated lumber genus ), but more receptive preservation. Valuable commercial timber, widely used in construction and building purposes and separate them different. Wood after treatment tives against decay fungi and insects SYP, found in northern U.S. and Canada the.
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