above ground treated wood must be used when lumber is less than 6" from the ground or has poor ventilation must be used for appli ions where wood is difficult to maintain or replace see more uses for 2x ground contact lumber
severe weather above-ground lumber is treated with ecolife el2 , a unique formula that contains a built-in wood stabilizer to reduce cracking, repel water and keep wood strhter, longer. severe weather above ground is used for any exposed area at least six inches off the ground and is ideal for decking, fencing, arbors and trellises.
it addresses nearly all the typical outdoor projects you might choose to take on, and it shows where ground contact lumber is a good idea. the new 2018 international residential code & international building code from the international code council now recognize the 2016 awpa book of standards as the code guidelines for treated wood uses.
get free shipping on qualified ground contact wood decking boards or buy online pick up in store today in the lumber & composites department.
as the names suggest, ground contact lumber is treated to a standard to withstand rot and decay even at the point where the lumber physically touches the ground, or water, or leaves. above ground lumber is treated to a lower standard of resistance, for those parts of a deck or project further removed from the harsh elements.
examples are fence posts, deck posts, guardrail posts, structural lumber, and timbers. uc4b gound contact heavy duty — wood and wood-based material used in contact with the ground in severe environments and in climates with a high potential for deterioration, including permanent wood foundations and wood used in salt-water splash zones.
this treated ground contact lumber must be used for appli ions where treated lumber is difficult to maintain, repair or replace. treated lumber is critical to the performance and safety of an entire system or construction such as deck joists, beams and ledger boards. an additional benefit of treated lumber is its defense against rot and
severe weather ground contact pressure treated exterior wood protected with copper azole ca-c provides lasting support and protection for all-purpose appli ions. suitable for burial or contact with the ground and fresh water immersion appli ions. 8-ft. 10-ft. 6-ft. 12-ft. 16-ft. 8-ft. common length in feet. 6-in x 6-in.
lumber designated for "ground contact" can be placed directly on or in the ground. to ensure you're building with the right lumber, check the board's label or stamp for its chemical retention level.
if you want the beautiful and natural look of wood for your project with added benefits and protection, head to menards for top-notch treated wood products our treated decking and porch flooring allows you to create the perfect outdoor living space, and our treated dimensional lumber is treated to a minimum of ground contact use, making it ideal for framing and construction.
top choice 2-in x 4-in x 12-ft spruce pine fir lumber. item 28349 model s204se.1.12
groundcontact also applies to products used in above-ground appli ions when the components are subject to hazards comparable to ground contact or are used in appli ions that are difficult to maintain, repair or replace and are critical to the performance and safety of the structure deck joists, beams, ledger boards, etc.
groundcontact level treatment .15 pcf has more than double the preservative of above ground level treated wood .07 pcf lighter, more natural wood appearance for improved staining qualities; wood is a sustainable product, making it environmentally friendly; kiln dried and heat treated prior to pressure treatment
the seven trust has begun replacing its stock of above-ground-rated pressure treated lumber with material rated for ground-contact use. the conversion comes after revisions by the american wood protection association awpa to its u1 standard for pressure treated products, which state that some “critical” above-ground framing members, such as those used in deck construction, may need to be
severe weather ground contact pressure treated exterior wood protected with micronized copper azole mca-c with baramine provides lasting support and protection for all-purpose appli ions. suitable for burial or contact with the ground and fresh water immersion appli ions. 8-ft. 10-ft. 6-ft. 12-ft. 16-ft. 8-ft.
for use in ground contact appli ions; 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. may have wane bark edge on corners; use 2 grade lumber when strength is the main feature you are looking for on your project.
pressure treated for ground contact gc appli ions, i.e. can be completely buried in the ground. it is also suitable for fresh water use, i.e. submerged. ac2 brand treated wood products use the micropro? technology, which is a revolutionary way to pressure treat wood for decks, fences, landscaping, and general construction uses. micropro? technology offers many benefits, including
groundcontact treated lumber can be used in both above ground and ground contact exterior appli ions; backed by a lifetime limited warranty against termite infestation and rot; 2 in. x 6 in. x 10 ft. must use ground contact pressure treated lumber where lumber is at risk for poor air circulation, less than six inches from the ground, or has
heavy duty ground contact . heavy duty ground contact treated wood should be used for: posts supporting houses, garages, sunrooms, barns, or other permanent structures in ground, concrete, or fresh water salt water splash . above ground. wood treated for above ground is intended for parts of your project that meets all of the following criteria:
groundcontact pressure treated lumber Seven Trust. ac2 green pressure treated lumber x 12 in 10 ft 2 prime treated lumber x 8 in 10 ft 2 prime treated lumber ac2 green pressure treated lumber. severe weather 2 in x 8 10 ft prime treated lumber the.
all treated wood is now ground contact 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.
home; about; our treating chemicals; ca-c; ca-c copper azole type c it's a smart choice for any project. and for the earth. prowood ca-c copper azole type c preserved wood is designed for long-term performance in outdoor appli ions and, therefore, require high quality corrosion-resistant nails, screws, and other fasteners and hardware.
the earliest wood preservatives--salts of lead and arsenic--were plenty toxic to the problem organisms, but failed miserably when it came to being safe for humans and the environment. creosote, patented in 1831, was the first wood preservative to successfully protect wood from ground contact and high moisture.
uc4c – wood and wood based materials used in contact with the ground either in very severe environments or climates demonstrated to have extremely high potential for deterioration and in critical structural components. service conditions: ground contact, fresh water, critical structural components. use environment: very severe ground contact.
cedar and ground contact this topic has 46 replies, 18 voices, and was last updated 5 years, 4 months ago by doobie . viewing 20 posts - 1 through 20 of 47 total
this double treated ground contact lumber must be used for appli ions where treated lumber is difficult to maintain, repair or replace. treated lumber is critical to the performance and safety of an entire system or construction such as deck joists, beams and ledger boards. an additional benefit of treated lumber is its defense against rot
a ground level deck is meant to be low, which means you’ll want to consider the type of wood or composite you’ll use for framing. if the bottom of your deck frame is less than 6" above the ground or partially buried, you should use pressure-treated wood that is rated for ground contact.
groundcontactlumber.com for information on choosing the right treated wood for your building project, visit. koppers performance chemicals . pressure treated wood is a practical choice for outdoor building. whether for residential or commercial appli ions, treated lumber is a common choice for contractors, do-it-yourselfers, and homeowners.
for projects like decking, wood that comes in contact with the ground is often a support beam or joist. uses for decking while composite lumber cannot be used for structural deck supports, it is an appropriate choice for deck boards, rails and posts. if the deck boards are on the ground, such as with a ground-level patio deck, composite lumber
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back when i still wore a tool belt and bill clinton was still in the white house , we didn’t give the pt lumber we used a lot of thought. as i recall, all of the cca-treated chromated copper arsenate framing material that our local lumberyards carried was rated for ground contact, with a 0.40 pcf pounds per cubic foot retention level.
this lumber is pressure treated for above ground contact ag appli ions. ac2 brand treated wood products use micropro technology, which is a revolutionary way to pressure treat wood for decks, fences, landscaping, and general construction uses. micropro technology offers many benefits including significantly improved corrosion performance.
a lifetime limited warranty for lifewood brand products treated with micronized copper azole compounds for above ground treated to minimum 0.06 pcf preservative retention level used in above ground residential or agricultural appli ions and ground contact treated lumber, timber, and plywood products treated to minimum 0.15 pcf preservative
pressure treated lumber can last at least four decades. these figures are not fixed because they can last longer than that. what brings the difference and determine how long your wood last is the maintenance practice. proper care of your treated wood can make it last way more than four decades.
use uc 4a or uc 4b treated lumber for the best below-ground option. the 4a or 4b rating should be clearly marked on the lumber’s end tag. if the lumber has been treated by the awpa, check for posts that have a uc 4a or uc 4b label. this indi es that the posts are intended for below-ground use. these posts are especially resistant to rot.
lumber used in contact with the ground and/or in outdoor environments can be attacked by insects, fungi, and bacteria that cause deterioration, decay, and rot of the wood. over the centuries, various practices have been used to protect wood from such attacks. in the past 60 years, however, chemical methods of wood preservation have become
the labels for these products, however, usually just state “above ground,” “ground contact,” or “ground contact/freshwater use,” which correspond to progressively higher retention levels. awpa minimum retention levels in lb. per cu. ft. preservative: acq above ground: 0.15 ground contact: 0.40 ground contact, heavy duty: 0.60
wood to ground contact in any type of structure is an invitation for subterranean termite infestation.. these photos came from a house where the homeowner attached boards to the piers to hold lattice between the openings. in figure 2, close inspection reveals formosan termites using the board as a bridge to enter the house.
when it comes to comparing treated wood vs. cedar, pressure-treated wood is the sturdier and more weather-proof of the two. it’s highly resistant to insect attack and rot, and special versions rated for “ground contact” can be buried in soil and will continue to shrug off decay for decades.
triadimefon is a triazole fungicide that was first registered as a wood preservative in 2009. triadimefon has been approved by epa for preserving wood-based composite products and wood products intended for above ground and in ground contact such as wood decking, patio furniture, millwork, guardrails, utility poles, foundation pilings, and fences.
homeowners ask if it is safe to use treated lumber for garden beds. while there is scientific consensus that it is safe to use for garden beds, the information below explains what chemicals are used in viance ground contact treated wood for residential use and the results of numerous scientific studies.
using ground contact pressure treated lumber above ground is nothing new. before 2003, when manufacturers voluntarily stopped treating lumber intended for most residential uses with copper chromium arsenate, cca-treated lumber was widely available in a single formulation that was rated for ground contact use. the current revisions are another
the lumber's longevity depends on how much preservative is in the wood, a characteristic that varies among grades of pressure-treated lumber. for above-ground use, wood with 0.25 pound of preservative per cubic foot is adequate, but wood that will be in contact with the ground, such as that used for fence posts, pergola posts or deck posts, should contain 0.4 pound per square foot.
lumber that’s pressure treated for ground contact is used less than 6” above the ground where there is a high risk of rot from prolonged exposure to ground moisture, fungal decay and insect infestation.it’s also important to use ground contact lumber for components that would be difficult to maintain, repair or replace and are critical to the performance and safety of the structure, no
a new study suggests that only 25% of contractors and diyers know the difference between above-ground and ground-contact treated lumber. by andrew wormer pro deck builders seem to have a good handle on the differences between above-ground awpa uc3b and ground-contact awpa uc4a pressure-treated lumber.
wood treated to uc4a ground contact standards is ideal for general-use situations where the wood may contact moisture, the ground, or be installed in a manner that subjects the wood to comparable ground contact conditions – such as poor ventilation, tropical climates or frequent exposure to moisture. deck joists, beams and ledger boards
species & sizes of pressure-treated wood. treated wood is generally available as dimensional stock in 2x4s, 2x6s, 4x4s and 2x2s for rail components. 5/4x6s and 2x6s for decking. 2x8s, 2x10s and 2x12s for joists, stair stringers and beams. 6x6s for support posts and plywood.