6x6x18 treated post home depot

An additional benefit of treated lumber is its defense against rot and insect infestation for its vast majority of applications. Southern yellow pine is responsibly manufactured, safe, and environmentally friendly when used as directed.Treated wood is typically still wet when it's delivered to The Home Depot or job site.

Every piece of 2 in. x 6 in. x 8 ft. Kiln-Dried Heat Treated Dimensional Lumber meets the highest grading standards for strength and appearance. This high quality lumber is ideal for a wide range of structuralThey are good to have down the road, when you have to replace a few. The panels are pressure treated and very big and heavy for one person to handle (I should have had help, but I was anxious to finish). You will have to build a gate and buy hardware for it. Pressure treated fences need to dry out before you add sealant or stain.This lumber has been pressure treated for critical structural (CS) applications, such as posts for post frame buildings, decks, porches, pavilions, pergolas, and gazebos. Critical structural treatment significantly outperforms wood treated to ground contact end use. This timber can be completely buried in the ground or submerged in fresh water. AC2® brand treated wood products use MicroPro ...4 in. x 6 in. x 16 ft. #2 Pressure-Treated Southern Yellow Pine 4B Cedar-Tone Timber meets the highest grading standards for strength and appearance. This timber is pressure treated in order to protect it from termites and rot.Enhance your outdoor area with the Universal Forest Products, Inc. 4 in. x 4 in. x 6 ft. Pressure-Treated Pine 2-Hole Split Rail Corner Post. Constructed of solid wood for lasting durability, the post is pressure treated to help withstand a variety of weather conditions and other elements of nature.

4 in. x 6 in. x 8 ft. #2 Pressure-Treated Southern Yellow Pine 4B Cedar-Tone Timber meets the highest grading standards for strength and appearance. This lumber is pressure treated in order to protect ... Post Caps. Post caps add the finishing touch to your deck, porch, or fence project. What's more, they protect your post from nature's ...This lumber is pressure treated with micronized copper azole in order to protect it from termites, fungal decay, and rot. Ideal for a variety of applications, including decks, play sets, landscaping, stair support, walkways and other outdoor projects where lumber is exposed to the elements.Loading Recommendations. Borate treated lumber provides warranted protection against rot and termites, including the formosan termite and rates low in environmental impact. Hot-dipped galvanized fasteners are recommended, as are connectors made with g90 galvanization (per astm a 653).The Universal Forest Products 4 in. x 4 in. x 6-1/2 ft. Pressure-Treated Pine Post can be painted or stained. This round post has a simple design. It is ideal for a variety of fencing and landscaping purposes. ... Dear Valued Home Depot Customer, Thanks for your question. Please contact our Online Customer Service Department at 800-430-3376 to ...Every piece meets the highest grading standards for strength and appearance. Use for outdoor projects where lumber is exposed to the elements. Effective against termites, rot and fungal decay. Lifetime limited residential warranty. Soft cedar-tone color. 3-1/2 in. x 5-1/2 in. x 16 ft. Click to discover the benefits of pressure treated wood.Nov 18, 2023 · Multiply 34 pounds by 0.210069 to get 7.142346 pounds. (We’d round this to 7.14 to be practical.) This is the weight per foot of a 6×6 post made from Douglas fir. Step 6 : Multiply by the length of the 6×6. If your 6×6 is 12 feet long, multiply 12 by 7.14 to get 85.68 pounds.Get free shipping on qualified 2 in x 4 in, 8 ft, Pressure Treated Pressure Treated Lumber products or Buy Online Pick Up in Store today in the Lumber & Composites Department.This 4 in. x 12 in. x 16 ft. Construction Select Pressure-Treated Timber is only carried in select Home Depot stores and not online. Please contact your local Home Depot Store for stock availability and pricing. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.

Every piece meets the highest grading standards for strength and appearance. This lumber is pressure treated in order to protect it from termites, fungal decay and rot. Ideal for a variety of applications, including decks, play sets, landscaping, stair support, walkways and other outdoor projects where lumber is exposed to the elements.About This Product. Use our Treated Mailbox Mounting Board to attach a mailbox to a wood mailbox post. It comes in an easy-to-use kit with 1 wood mounting board and wood screws. The mounting board is pressure treated for long life, protecting against insects and rot. It is 6 in. W, designed to be used with standard size mailboxes.This lumber has been pressure treated for critical structural (CS) applications, such as posts for post frame buildings, decks, porches, pavilions, pergolas, and gazebos. Critical structural treatment significantly outperforms wood treated to ground contact end use. This timber can be completely buried in the ground or submerged in fresh water. AC2® brand …2 in. x 6 in. x 16 ft. 2 Prime Ground Contact Southern Pine Pressure-Treated Southern Yellow Pine Lumber. Every piece meets the highest grading standards for strength and appearance. This lumber is pressure treated in order to protect it from termites, fungal decay, and rot. Ideal for a variety of applications,Loading Recommendations. This 6 in. x 6 in. x 8 ft. Cedar Lumber has a smooth texture. It can be painted and stained. It is untreated dimensional lumber with green moisture content.About This Product. Add a decorative element to your yard with the 4 in. x 4 in. x 8 ft. Pressure-Treated Wood Post. The all-wood post has a French gothic design. The post is manufactured from Southern pine and is pressure treated for protection against decay and termites.

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No. 1. Paintable,Pressure Treated,Stainable. MCA - Micronized Copper Azole. .06 lb/ft3. ---. WeatherShield 1 in. x 2 in. x 8 ft. Pressure-Treated Southern Pine Lumber. Get free shipping on qualified 8 ft Pressure Treated Lumber products or Buy Online Pick Up in Store today in the Lumber & Composites Department.About This Product. Pressure-Treated Southern Yellow Pine meets the highest grading standards for strength and appearance. Treated for protection against fungal decay, rot and termites, it is ideal for ground contact and a variety of general uses including exposed structures, sill plates, decks, docks, ramps and other outdoor applications.6-in x 6-in x 20-ft #2 Ground Contact Pressure Treated Lumber. Find My Store. 7. Common Measurement: 6-in x 6-in. Contact Type: Ground contact. Lumber Grade: #2. Multiple Sizes Available. Severe Weather. 6-in x 6-in #2 Southern Yellow Pine Ground Contact Pressure Treated Lumber.This timber has been pressure treated for critical structural (CS) applications, such as posts for post frame buildings, decks, porches, pavilions, pergolas, and gazebos. Many municipal and state building codes require this critical structural treatment when posts in a structural application are put into the ground. Critical structural treatment significantly out performs wood treated to ...Shop severe weather #1 pressure treated lumber (common: 6 x 6 x 16-ft; actual: z-in x 5.5-in x 192-in) at Lowes.com ... Link to Lowe's Home Improvement Home Page Lowe ...The 6" x 6" x 8' number two ground contact pressure treated southern yellow pine post work perfect.They look great and were straight. when I have the need I will use them again. by Bob Response from UFPI Representative Show Jun 9, 2023

This 4-1/2 in. x 78 in. Pressure-Treated Post is made from solid wood and features a full-round design. It can be painted or stained to match any decor. It is pressure-treated for long life.Crossover 6 in. x 6 in. x 108 in. Post Sleeve. 181. (116) Questions & Answers (66) Hover Image to Zoom. $ 138 28. Pay $113.28 after $25 OFF your total qualifying purchase upon opening a new card. Apply for a Home Depot Consumer Card. Locking pin design secures the aluminum back to the building.1. Verified Purchases Only. Showing 1 - 10 of 92 reviews. Feb 16, 2024. split rail posts. The 3 in. X 6 in. X 7 ft. Pressure treated pine 3 hole posts were perfect for our short fence project at the foot of our driveway. All of the posts arrived in great condition without any issues and appeared to be of great quality.About This Product. Every piece meets the highest grading standards for strength and appearance. This lumber is pressure-treated in order to protect it from termites, fungal decay and rot. Ideal for a variety of applications, including decks, play sets, landscaping, stair support, walkways and other outdoor projects where lumber is exposed to ...2 in. x 6 in. x 16 ft. 2 Prime Ground Contact Southern Pine Pressure-Treated Southern Yellow Pine LumberAbout This Product. Pressure-Treated Southern Yellow Pine meets the highest grading standards for strength and appearance. Treated for protection against fungal decay, rot and termites, it is ideal for ground contact and a variety of general uses including exposed structures, sill plates, decks, docks, ramps and other outdoor applications.Made from pine in a split-rail design for a rustic look. Unfinished wood will weather to gray for a handsome appearance. Can be painted or stained to match your home's exterior. Ideal for use with a border fence, pasture fence and more. Pressure-treated with micronized copper azole to provide resistance to termites, fungal decay and rot.Get free shipping on qualified Deck Posts products or Buy Online Pick Up in Store today in the Lumber & Composites Department.Copper azole treatment. 6 in. x 8 in. x 16 ft. Smooth texture. Stainable and paintable for a customized look. For use with hot dipped galvanized fastener (not included) Incised lumber. Water-resistant. Click to discover the benefits of pressure treated wood. Return Policy.Get free shipping on qualified Untreated Dimensional Lumber/Stud products or Buy Online Pick Up in Store today in the Lumber & Composites Department.

About This Product. For your home's next project consider using the 6 in. x 6 in. x 8 ft. Pressure-Treated Pine Timber. The pressure treatment helps protect this wood from insect damage, weather damage and decay making it ideal for a variety of applications including decks, play sets, landscaping, stair support and walkways and other outdoor projects where lumber is exposed to the elements.

This heavy-duty 5 in. x 5 in. x 8-1/2 ft., round, pressure-treated pine end post features 3 pre-drilled 2 holes designed to attractively end a post-and-rail fence run. For use with 3 dowel-style rails or wooden fence panels with 3 dowelled backer rails (sold separately).This lumber has been pressure treated for critical structural (CS) applications, such as posts for post frame buildings, decks, porches, pavilions, pergolas, and gazebos. Critical structural treatment significantly outperforms wood treated to ground contact end use. This timber can be completely buried in the ground or submerged in fresh water. AC2® brand …6x6x16 treated post home depot price. x x 16 Construction Select Pressure-Treated Timber 549600106061600 The Home Depot. PT – TESCO Building Supplies. Severe Weather 4-in x 6-in x 16-ft #2 Ground Contact Wood Pressure Treated Lumber in the Pressure Treated Lumber department at.Shop. /. 6x6x18 Post. Category: Treated Lumber Tag: Treated pole. Description. Additional information. The 6 in. x 6 in. Pressure-Treated Pine Lumber has been treated for ground contact and is ideal for retaining walls, decks, stair support posts and walkways. It can be painted or stained.This item: 6 in. x 6 in. x 16 ft. #2 Pressure-Treated Ground Contact Southern Line Timber Wood Post Simpson Strong-Tie ABA ZMAX Galvanized Adjustable Standoff Post Base for 6x6 Nominal Lumber $30.51Pressure-Treated with micronized copper azole; Can be painted or stained; Hot-dipped galvanized fasteners recommended; Lumber, southern pine lumber, Wood decking, southern pine wood decking, natural lumber, natural wood decking, pressure-treated lumber; Note: Product may vary by store. Click to learn how to select the right lumber for your projectShop for Wood Posts at Tractor Supply Co. Buy online, free in-store pickup. Shop today! ... Home / Fencing & Gates / Fence Posts / Wood Posts ... Repel 6.5 ft. x 4-5 in. CCA Pressure-Treated Fence Post SKU: 440514799 Product Rating is 5 5 (2) $12.99 Bulk Price ...There are two basic types of pressure-treated wood. Individual pieces of pressure-treated lumber will have a tag on one end of the board to indicate its permitted use. Above-ground pressure-treated wood: Can be used in applications that are easily maintained or replaced. Can only be used in applications more than 6 inches from the ground.Get free shipping on qualified Deck Posts products or Buy Online Pick Up in Store today in the Lumber & Composites Department.

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Treated Wood Brown 2-in x 4-in x 12-ft. ★★★★★ ★★★★★. 3.1. (14) Details. Article #84895023. Treated Wood Brown 6-in x 6-in x 16-ft is rated 4.7 out of 5 by 3 . Pressure Treated Wood is an economical choice for your outdoor projects. This treated lumber protects against decay and insects.Pressure treated with micronized copper azole (MCA) Suitable used in ground contact, freshwater contact, heavy-duty, critically important components; Treated to withstand decay fungi and insects with increased potential for biodeterioration; Lifetime limited residential warranty against rot and termitesManufactured from southern yellow pine, a renewable resource, for an environmentally friendly choice. Pressure treated for ground contact. Uniform thickness, density and appearance with a smooth surface. 6 in. x 6 in. x 10 ft. Lifetime limited residential warranty and two year color limited warranty. No two pieces of lumber are the same.Model # 11514. Shop Severe Weather. 300+ views last week. Get Pricing & Availability. Use Current Location. #2 Grade southern yellow pine. Treated ground contact. Actual dimensions: 5.5-in x 5.5-in x 18-ft. Join. Earn. Save.This lumber is pressure treated with micronized copper azole in order to protect it from termites, fungal decay, and rot. Ideal for a variety of applications, including decks, play sets, landscaping, stair support, walkways and other outdoor projects where lumber is exposed to the elements.See what other customers have asked about 4 in. x 6 in. x 16 ft. #2 Pressure-Treated Ground Contact Southern Pine Wood Post 128619 on Page 2. ... #1 Home Improvement Retailer.Typical use joists, beams and posts in the constructions of outdoor projects; Effective against termites, rot and fungal decay; Lifetime limited residential warranty; Note: product may vary by store; Click to discover the benefits of pressure treated wood; Return PolicyTypical use joists, beams and posts in the constructions of outdoor projects; Effective against termites, rot and fungal decay; Lifetime limited residential warranty; Note: product may vary by store; Click to discover the benefits of pressure treated wood; Return PolicyBatteries are an essential part of our everyday lives, but when they are no longer usable, it is important to dispose of them properly. Home Depot offers a convenient way to safely...Severe Weather Above Ground Contact pressure treated exterior wood. Actual Dimensions: 5.75-in x 5.75-in x 8-ft. Suitable for burial or contact with the ground and fresh water immersion applications. Treatment meets AWPA (American Wood Protection Association) standards and is building code compliant (IRC and IBC)Buy 100 or more $5.65. Designed to prevent termites, fungal decay and rot. Wood construction ensures durability. Measures 96 in. H x 2 in. W x 2 in. D. View More Details. Moses Lake Store. 160 in stock Aisle 24, Bay 016. Nominal Product Length (ft.): 8 ft. Pickup at Moses Lake. ….

An additional benefit of treated lumber is its defense against rot and insect infestation for its vast majority of applications. Southern yellow pine is responsibly manufactured, safe, and environmentally friendly when used as directed.Treated wood is typically still wet when it's delivered to The Home Depot or job site.Treated ground contact. Actual dimensions: 5.5-in x 5.5-in x 18-ft. Pressure treated lumber is suitable for burial or contact with the ground and offers improved corrosion performance. Treatment meets American Wood Protection Association (AWPA) standards and is building code compliant (IRC and IBC)Innovative colour pigment technology gives the treated wood a warm, finished look. Backed by a Lifetime Limited Residential Warranty against rot, decay and termites. 6x6 Pressure Treated Wood is commonly used for deck, fence or dock posts, and landscaping projects.Item Description. 12 ft. Southern Pine. #2 prime. Paintable,Pressure Treated,Stainable,Water Resistant. MCA - Micronized Copper Azole. 0.15 lb/ft3. WeatherShield 2 in. x 6 in. x 12 ft. #2 Prime Pressure-Treated Ground Contact Southern Pine Lumber. 0/0.Multiple Sizes Available. Severe Weather. 6-in x 6-in #2 Southern Yellow Pine Ground Contact Pressure Treated Lumber. 4454. Common Measurement: 6-in x 6-in. Contact Type: Ground contact. Lumber Grade: #2. Drying Method: Kiln-dried. 6-in x 6-in x 20-ft #2 Ground Contact Pressure Treated Lumber.Marshmallows are a classic treat that can be enjoyed in many ways. Whether you’re making s’mores, adding them to hot chocolate, or just eating them plain, marshmallows are a delici...MicroPro Sienna Treated Wood is pressure treated for long-term performance outdoors for decks, fences and landscaping. It uses advanced wood preservative technology that is low VOC, low eco-toxicity and certified as an Environmentally Preferable Product. Innovative colour pigment technology gives the treated wood a warm, finished look. Backed by a Lifetime Limited Residential Warranty against ...I have 21 brand new 6x6x18' pressure treated post. $60 per post. First come first serve cash only. 6x6x18 treated post - Miscellaneous - Ottoville, Ohio | Facebook Marketplace 6x6x18 treated post home depot, These timbers are for below ground or in ground special treated, last longer than pressure treated. Worked perfectly. Project called for gravel, timbers, 12 inch nails, concrete pavers. Four steps in all, are 6 ft wide, freestanding; top step is 2 ft wide serves as a landing. Rest of steps are 1 ft wide., An additional benefit of treated lumber is its defense against rot and insect infestation for its vast majority of applications. Southern yellow pine is responsibly manufactured, safe, and environmentally friendly when used as directed.Treated wood is typically still wet when it's delivered to The Home Depot or job site., The Universal Forest Products 4 in. x 4 in. x 6-1/2 ft. Pressure-Treated Pine Post can be painted or stained. This round post has a simple design. It is ideal for a variety of fencing and landscaping purposes. ... Dear Valued Home Depot Customer, Thanks for your question. Please contact our Online Customer Service Department at 800-430-3376 to ..., About This Product. The Universal Forest Products, Inc. 4 in. x 4 in. x 5 ft. Pressure-Treated Pine 2-Hole Split Rail End Post can be used to enhance any residential area. The post is pressure treated to increase durability and constructed of solid wood for added strength., An additional benefit of treated lumber is its defense against rot and insect infestation for its vast majority of applications. Southern yellow pine is responsibly manufactured, safe, and environmentally friendly when used as directed.Treated wood is typically still wet when it's delivered to The Home Depot or job site., Types of fire bricks available at Home Depot include porcelain and ceramic bricks. Home Depot also provides pre-made fire pits with fire bricks made from sandstone. One popular typ..., 6 in. x 6 in. x 16 ft. #2 Pressure-Treated Ground Contact Southern Line Timber Wood Post. The 6 in. x 6 in. x 14 ft. Pressure-Treated Pine Timber can be used in a variety of applications, including decks, landscaping, walkways and other outdoor projects. It can be painted and stained to suit., An additional benefit of treated lumber is its defense against rot and insect infestation for its vast majority of applications. Southern yellow pine is responsibly manufactured, safe, and environmentally friendly when used as directed.Treated wood is typically still wet when it's delivered to The Home Depot or job site., Overview. Model # 10010049 Store SKU # 1000790085. MicroPro Sienna Treated Wood is pressure treated for long-term performance outdoors for decks, fences and landscaping. It uses advanced wood preservative technology that is low VOC, low eco-toxicity and certified as an Environmentally Preferable Product. Innovative colour pigment technology ..., Home Depot is known for its wide range of products for home improvement, but did you know that they also offer a comprehensive selection of office supplies? Whether you’re setting ..., Uniform thickness, density and appearance with a smooth surface. 4 in. x 4 in. x 10 ft. Lifetime limited residential warranty and two year color limited warranty. No two pieces of lumber are the same. Color, grain pattern and texture will vary as well. Use #2 grade lumber when both appearance is not the most important to you project., Hover Image to Zoom. $ 26 18. Pay $1.18 after $25 OFF your total qualifying purchase upon opening a new card. Apply for a Home Depot Consumer Card. Supports and connects up to 4 individual pieces of wood. Made from powder coated steel and will never rust or bleed. Compatible with standard 6 in. x 6 in. posts. View More Details., Please call us at: 1-800-HOME-DEPOT(1-800-466-3337) Special Financing Available everyday* Pay & Manage Your Card Credit Offers. Get $5 off when you sign up for emails with savings and tips. GO. Our Other Sites. The Home Depot Canada. The Home Depot México. Pro Referral. Shop Our Brands. How can we help?, Highlights. Kiln dried cedar. Rough sawn surface for a natural appearance. Can be stained or painted. Great for outdoor projects like fences or pergolas and gazebos. Minimal warping, shrinking, swelling, cupping or twisting. Workable; easy to nail, screw, saw, cut or trim. Click to learn how to select the right lumber for your project., 2 in. x 8 in. x 8 ft. #1 Ground Contact Pressure-Treated Lumber. 57. (12) Questions & Answers (3) Hover Image to Zoom. Designed to resist fungal decay, rot, and termites. Solid wooden construction for lasting use. Measures 8 ft. L x 7.37 in. W x 1.63 in. thickness. View More Details., 5/4 in. x 6 in. x 8 ft. Thermally-Treated Premium Ash 4-Sides Oiled Decking Board (4-Bundle) For above ground building projects use the Mendocino 6 in. x 6 in. x 20 ft. Douglas Fir Lumber featuring a smooth texture. Paint and stain this lumber for a personalized touch., Search Results related to used 6x6 pressure treated post for sale on Search Engine, Pressure-treated timbers are treated for protection against termites and rot. Ideal for a variety of applications including decks, play sets, walkways and landscaping projects where lumber is exposed to the elements. ... Wood Fence Posts. Internet # 301913683. Model # 288741. Store SKU # 411310. 4 in. x 4 in. x 6 ft. #2 Ground Contact Pressure ..., This foundation system is the most affordable option and is commonly used by many builders and home owners to keep costs down while still offering good stability to the building. It is best used for storage buildings and utility buildings. A 6×6 treated post is placed on top of a concrete cookie base. This pre-formed base should be at least 6 ..., 4 in. x 6 in. x 8 ft. #2 Pressure-Treated Timber. 162. (351) Questions & Answers (12) Hover Image to Zoom. $ 19 28. Buy 40 or more $17.35. For use as retaining walls, decks, walkways, and outdoor projects. Special coating protects against termites, rot, and fungal decay., In-Ground Post Decay Protection for posts in soil or concrete; Simple installation and post longevity increased by 250%; Pole Barn, Deck, Fence, Pergola, Mailbox, any post-foundation job; View More Details, The prices listed are subject to change without notice. We do our best to keep these up to date, but the price can change daily depending upon availability., Used to provide support and rigidity when installing a rail system, this post is suitable for exterior use in commercial or residential applications. Natural wood finish may be stained or painted for a customized look. Nominal Dimensions: 4 in. x 4 in. x 54 in. Compatible with aluminum and carbon steel (black iron) fasteners., Building Materials. Lumber & Boards. Treated Lumber. Treated Boards, Decking, Lumber & Timbers. 6 x 6 x 18' #2 Critical Structural CCA .60 Green Pressure Treated Timber. (Actual Size 5-1/2" x 5-1/2" x 18') Model Number: 1098080 Menards ® SKU: 1098080. PRICE $89.99. 11% REBATE* $9.90. PRICE AFTER REBATE* $ 80 09. each. SELECT STORE & BUY., Chromated copper arsenate (CCA) pressure treated wood products have stood the test of time. CCA pressure treated wood that was installed as far back as the 1940s still remains in serviceable condition today. Though restricted from use in residential applications, it's still widely accepted in the building industry as the material of choice for post frame buildings., This product is Ideally suited to be used as a line post with barbed wire or other non-climb fencing. This Round fence post has been pressure treated with the MCA chemical for ground contact applications., Copper azole treatment. 6 in. x 8 in. x 16 ft. Smooth texture. Stainable and paintable for a customized look. For use with hot dipped galvanized fastener (not included) Incised lumber. Water-resistant. Click to discover the benefits of pressure treated wood. Return Policy., May 12, 2024 · Chromated copper arsenate (CCA) pressure treated wood products have stood the test of time. CCA pressure treated wood that was installed as far back as the 1940s still remains in serviceable condition today. Though restricted from use in residential applications, it's still widely accepted in the building industry as the material of choice for post frame buildings., Fresh looking, more natural appearance. For use with ground contact. Limited lifetime warranty. 8 in. x 8 in. x 12 ft. Can be painted or stained. No two pieces of lumber are the same. Color, grain pattern and texture will vary as well. Use #2 grade lumber when both appearance is not the most important to you project., Model # 606182CA4. Get Pricing & Availability. Use Current Location. #2 grade southern yellow pine. Severe Weather Ground Contact pressure treated exterior wood protected with Copper Azole (CA-C) provides lasting support and protection for all-purpose applications. Suitable for burial or contact with the ground and fresh water immersion ..., MicroPro Sienna Treated Wood is pressure treated for long-term performance outdoors for decks, fences and landscaping. It uses advanced wood preservative technology that is low VOC, low eco-toxicity and certified as an Environmentally Preferable Product. Innovative colour pigment technology gives the treated wood a warm, finished look. Backed by a …, This timber has been pressure treated for critical structural (CS) applications, such as posts for post frame buildings, decks, porches, pavilions, pergolas, and gazebos. Many municipal and state building codes require this critical structural treatment when posts in a structural application are put into the ground. Critical structural treatment significantly out performs wood treated to ..., Treated Lumber. • Protects against termites, rot and fungal decay. • 2x the chemical retention levels and protection compared to. above ground treated wood. • Must be used when lumber is less than 6" from the. ground or has poor ventilation. • Must be used for applications where wood is difficult. to maintain or replace.