Exterior Grade Plywood Sheathing

Plywood grades are not regulated by the U. Mark m-ta@ppis9. For exterior structures that are a specified to be fire retardant, we offer Exterior Fire-X fire retardant lumber, plywood, and timbers. Exterior plywood sheets typically have several veneers glued together, classifying them as multi-ply. Click here for a free quote & find a lumber yard near you!. Exterior Wood, Inc. Columbia Radius bending plywood is the versatile panel for many design applications where straight lines just won’t do. Concrete formwork may represent close to half the cost of a concrete structure. Exterior glue is designed for applications subject to permanent exposure to weather and moisture. Suitable for. “Marine” grade,free of heartwood on all four sides,is appropriate where all sides are vulnerable to marine organisms, such as in jetties. With moisture-resistant paper on both sides, along with a moisture-resistant core, they are suitable for use in exterior steel or wood-framed construction for single-family housing, apartments, motels, and light commercial buildings. The thicker plywood sheathing allowed me to fasten the board and batten siding directly to the plywood sheathing and the plywood provided a big structural upgrade for my walls. If you do not find the product in the list you were looking for, call us or fill out the contact form at right. - Since 1977, the exterior wood pressure treatment industry leader in quality, innovation, technology, and inventory. Designed for a longer exposure during construction, backed by a 500-day weather resistance guarantee. Boral Plywood sheeting is available in a number of grades from high quality appearance grades with limited imperfections to non-structural, non-appearance grades with no manufacturing standard. Common structural sheathings include plywood, oriented strand board (OSB), wafer board, and exterior gypsum board. What kind of plywood is used for roofing? I would argue that plywood isn't used for roofing, but for decking the roof prior to installing the actual roofing material. Joseph Parr stocks the 9mm, 12mm and 18mm exterior plywood. Boral Plywood sheeting is available in a number of grades from high quality appearance grades with limited imperfections to non-structural, non-appearance grades with no manufacturing standard. If you decide to install wall sheathing you have to check a few things before starting. As most houses use poly vapor barriers on the inside, the off-gas from wall sheathing is not a factor. AS/NZS 2271 - A Bond glue line High grade appearance face, lesser grade back. Balconies and exterior walls constructed of Exterior Fire-X may be considered non-combustible by some building codes. Plywood vs. Selco also stock sheathing and Elliotis Pine plywood. 6" grade clearance foundation grade wood rainscreen furring (3/8" thick min) insulation where req'd install bug screen as 1/4" gap, do not calk apron flashing (optional) note: apron flashing or box flashing. 0162 nominal Marble slabs 1. Browse our range of roof boards below and choose between general-purpose hardwood plywood, shuttering plywood exterior, Wise-Spruce plywood sheets and more. Should You be Building with OSB or Plywood? By: Mark Crawford – Level 4 Field Consultant & Jeff Hoch – Architect/FC May 23, 2017 Oriented Strand Board (OSB) was introduced to the building industry in the late 1970s and quickly became the sheathing material of choice for North American home builders in place of plywood. For touch-sanded grades such as C-D Plugged, C-C Plugged, UNDERLAYMENT and APA RATED STURD-I-FLOOR (marked PS 1), see Table 2. Oils, sealers, moisture etc. Ply Sheets - Exterior Grade Plywood - Various Sizes. Plywood is stocked at each of our building merchants, and is also available to purchase online. “Marine” grade,free of heartwood on all four sides,is appropriate where all sides are vulnerable to marine organisms, such as in jetties. Exterior In-Stock Options Interior In-Stock Options Sheathing In-Stock Options Dry Wall In-Stock Options Insulation In-Stock Options …. OSB has over 70% market share for structural panels. By Mark Halverson. The glue The glue for marine plywood should be the best permanent WBP(phenolic) glue. Sanded smooth, paintable. Forest Plywood offers panels from a high grade paintable panel to a rough, industrial and structural construction grade. Brochures and samples available upon request. During the 1980s, foam sheathing became popular because of its superior insulating properties. Whatever you’re working on, our range of plywood board contains everything you need at our famously low prices. Exterior grade plywood is. 6-mil polyethylene film to be applied over below-grade portions of exterior foundation walls before backfilling. AP Foil-Faced insulation is lightweight and easy to install. Sheathing is manufactured according to the grade, veneer and panel thickness, construction, workmanship, and identification requirements for plywood sheathing as outlined in the PS 1-09. Exterior grade plywood (WBP - Weather and Boil Proof). Panels designated Structural I must meet all of the manufacturing and performance standards of Rated Sheathing, as well as certain additional requirements. Solid board sheathing used to be the norm, but is typically no longer used because of its high cost. A Portland cement based stucco is then rendered over the metal lath and building papers. A sanded plywood panel with A-grade face, B-grade back and C-grade inner plies. For exterior structures that are a specified to be fire retardant, we offer Exterior Fire-X fire retardant lumber, plywood, and timbers. Sheathing: Intended mainly for roofs and walls, these panels also can be installed as subflooring when used in conjunction with structural wood flooring (such as conventional plank looring) or beneath underlayment-grade plywood or OSB. Given the. A-B Exterior. Refer to Exterior Warranty for coverage information on page 8) HardieBacker 500 may be used up to a height not exceeding the lesser of: through the second-story above grade or 30 feet above grade. They share the same set of performance standards and span ratings. AA Marine, Superply, and more options available. Exterior Fire-X is pressure-impregnated (aka "pressure treated") that provides tested fire protection for applications directly exposed to weather or high humidity -- indoors or outdoors. The plywood look for your cottage is great! Could you please let me know what thickness plywood you used. Make sure that the smooth face of the plywood is up when you install for floor coverings. Grade D Veneer: Large knots, splits and voids permitted provided they do not “seriously” impair the strength of the panel. They range from smooth, natural surfaces suitable for finish work and underlayment to more economical grades used for wall sheathing and subfloors. Fir Plywood. It is especially suited as a subfloor for exterior vinyl covered decks and is endorsed by Duradek as the subfloor of choice. And if you're still wondering what roof sheathing is and what materials are typically used, read on and satisfy your curiosity. Do not use gypsum sheathing as a nail base. Brows our selection of plywood and lumber at the Plywood C. The HardieBacker 500 must be installed over sub-sheathing with a code approved water-resistive barrier, or in accordance with the applicable code. This plywood is ideal for a wide variety This plywood is ideal for a wide variety of applications including light frame wall roof assemblies decks play sets landscaping stair support and walkways and other outdoor projects where lumber is exposed to the elements. Sheetrock® Brand Gypsum Sheathing offer the speed and economy of regular drywall construction. Plywood panel joints to be sealed full length with caulking compound capable of producing a moisture-proof seal. Forest Plywood offers panels from a high grade paintable panel to a rough, industrial and structural construction grade. If there are two numbers, the first refers to roof applications, the second to floor applications. Types of Sheathing Materials. This weight varies depending on the type of wood used, the type and amount of glue used, and whether or not the plywood has absorbed excess moisture. Exterior plywood is where the wood is bound together using water-resistant glues. It simply refers to how many 1/4-inches thick the rough stock is. Plywood is available in a variety of different qualities. Industrial Plywood, Inc. With moisture-resistant paper on both sides, along with a moisture-resistant core, they are suitable for use in exterior steel or wood-framed construction for single-family housing, apartments, motels, and light commercial buildings. Consult with. Panel Grade. Plywood / Composite Panels. Get a Free Instant Quote Online!. A single sheet of 3/4" inch plywood is normally not adequate as a substrate for tile. Paint or stain will help, but if the ply is in direct contact with the elements (rain, snow, sun) then it's not going to last long. Oils, sealers, moisture etc. Plywood core materials have provided the “best bang for the buck” for many years. Originally manufactured for European cabinet makers but now popular in the United States as well. It can be used the same way as regular plywood, but it's been treated with fire retardant preservatives. Plywood sheathing is made from lower density softwoods. Use panels no smaller than 4 feet long. Tongue and groove plywood is designed so panels fit together quickly like a puzzle. Sheathing / Shuttering The term ‘Sheathing’ generally refers to wall sheathing. , which is designed for exterior use to sheathe the outside of a house. Dry plywood-type sheathing has a permeability ranging from 0. "CDX" plywood is an exterior grade plywood only. gypboard on the interior. In addition, you can also view several of our products we offer. For APA-rated sheathing, the rating is expressed as two numbers, such as "48/24" — the first number is the distance between supports when the sheet is used for roof sheathing and the second is the maximum span when used as subfloor. When it comes to exterior wall sheathing, GP's Plytanium plywood wall sheathing and Blue Ribbon OSB sheathing are leaders in the construction industry. The stiff and strong quality construction is Ideal for both residential and light commercial construction. Greenply is a leading manufacturer of high quality plywood and block boards, suited for every need. We can also offer a full cutting service if required. Common structural sheathings include plywood, oriented strand board (OSB), wafer board, and exterior gypsum board. Exterior grade (X) plywood is bonded with a waterproof adhesive. The exterior is a rougher texture and doesn't accept a good stain or paint finish. Produced to customer specifications to meet specific end use needs. 12 - 13 TYPES OF CUTTING VENEER GLOSSARY p. Marine plywood and exterior grade plywood both use the same glue. Timber is a natural product and has an infinitely varying range of characteristics and appearances. 6 Fiber cement lap siding 0. A bonded exterior plywood must be used for applications involving long term full exposure. Plywood manufactured by APA member mills is available in a wide variety of appearance grades. The type or grade of adhesive also has a part in grading. The more economical types of plywood are the C & D grades. In addition to being a lower grade, the face veneer on inexpensive types of plywood can be as thin as 1/100″ compared to about 1/40″ on better material. If you want the shed to be waterproof, its roof must be constructed just like any other roof -- a plywood decking covered with shingles or with composite or metal roofing. Florida Southern Plywood takes great pride in all our products and services, even more so when it comes to plywood. But there are more types of WBP glue for general exterior plywood. Plytanium® plywood sheathing is ideal for residential and light commercial construction, and provides outstanding performance for walls and roofs. Both types of reconstituted wood. It is generally considered as the lowest grade of plywood. View Leases. Allowance Total Sheathing Load (psf) for FRX® Plywood Table based on Structural 1, exterior-grade plywood. The tables also assume dry conditions, normal duration of load, and. Exterior grade plywood, marked with an “X” after the surface grade uses a resin that is more water resistant than interior grade plywood. Input project size, product quality and labor type to get Plywood Siding material pricing and installation cost estimates. AraucoPly® Sanded plywood is offered in a range of grades, including some of the highest graded AC products on the market today. Marine Grade G1S plywood, (good-one-side) is plywood with one side graded "Select" to show no defects or gaps on the surface only, and is an aesthetic consideration. Re: Ontario building code wall sheathing requirement. The thickness of plywood a house needs depends on whether you nail the siding through the sheathing to the studs or only to the plywood. Exterior wall construction can be classified by its fire-resistance. CDX plywood is rough on both sides. 1 Panel joint sealed. I had originally planned to use 1/2 plywood with clips. I opened a hole in the interior sheetrock and pulled back the damp fiberglass roll insulation, expecting to find tar paper or Tyvek between. For SI: 1 pound per cubic foot = 16 kg/m 3. We also have a limited selection of partial redi-cut sheets in stock. CUT PIECES OF 5. Available in 9' and 10' lengths, TallWall provides builders and framers with additional advantages when compared to traditional 4×8 wall sheathing installed hori. Home; Cut To Size; Gallery; Kitchens. As most houses use poly vapor barriers on the inside, the off-gas from wall sheathing is not a factor. 2-5 PLYWOOD p. Medium Density Overlay Plywood, often referred to as "MDO plywood" is made with a layer of weather resistant resin-infused fiber, specifically designed for heavy exterior use. The higher grades, however, are fairly strong. 25c Fiber cement panel siding 0. Each panel's grade stamp will indicate whether you are using Exterior or Exposure 1. The capacity of a plywood to not de-laminate under boiling is not only dependent on the quality of the glue but also on the materials used and the care which was used in the manufacture. 2 Below-grade moisture barrier. See more ideas about Plank walls, Interior wood plank walls and Wood plank walls. Plywood gets it strength from multiple layers of wood bonded together. Interior Plywood This type is made for interior use only, from hardwood and softwood species and is generally used in places where exposure to moisture is minimal, e. When it comes to exterior wall sheathing, GP's Plytanium plywood wall sheathing and Blue Ribbon OSB sheathing are leaders in the construction industry. BC plywood Pine will have a repaired face that has removed any knots or other defects. As most houses use poly vapor barriers on the inside, the off-gas from wall sheathing is not a factor. Used in any non-structural paint-grade exterior application. Finishing Pyro-Guard Fire Retardant Treated Wood. Arjay (1) Coosa Panels (2) Corecell Foam (9) Divinycell Foam (13) Expanded PVC Panels (1) Marine Grade Plywood (1) Meranti Plywood (1. Made of pine, this sheathing plywood is the strongest material you can find for your siding project. Suitable for high quality paint finish. The cheapest way to go is APA, AB or BB sheets with exterior plywood used internally. Section 2 provides specific details regarding the application of. The more economical types of plywood are the C & D grades. Our decorative interior veneers and panels are used in high-end cabinetry, fine furniture, architectural millwork and commercial fixtures. We offer over 100 different cuts and veneer species for making laminated plywood, as AA/AA, AA/A, A/A, A/1, A/2, A/3, A/4, etc. The grade stamp on each panel will indicate whether you are using Exterior or Exposure 1. 25c Fiberboard siding 0. If you see signs of damage, gently pull away the builder's felt and examine the sheathing underneath. PLYWOOD -- FINISHING AND REFINISHING Exterior plywood is commonly used for siding. It adds proven performance and durability to new homes, room additions and renovations. Sheathing is a layer of plywood sometimes installed on floors (as subflooring), walls (keeps the neighbors from seeing what you are doing) and roofs (a buildings blanket). Odds are, that if you pass a housing development of wood-framed houses, it will have OSB (oriented strand board) as exterior sheathing. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood. Sheathing Layout Install sheathing panels according to the recommendations of the Engineered Wood Association (APA). The bottom edge of the plywood sheets. 60 CCX Plywood. Item # 190445. Interior plywood (or engineered-grade plywood) is also made with water-resistant glue, but its veneers do not weather well. Unsanded sheathing grade Douglas Fir Plywood (DFP), conforming to CSA O121, and Canadian Softwood Plywood (CSP), conforming to CSA O151, are the two most common types of softwood plywoods produced in Canada. That said, I reckon real marine plywood is the best junk available today. Moisture, rot and termite resistant. "Generally, the durability of MDO and other exterior grades of plywood are equal," says Merrit Kline, product support specialist at APA. Allowance Total Sheathing Load (psf) for FRX® Plywood Table based on Structural 1, exterior-grade plywood. With webTrack you can access your account online including invoices, credit notes, monthly statements and view products purchased. Plywood Grades and Exposure Ratings: Plywood is graded by its veneer (on the front and back panels) and its exposure rating. Plywood is graded for exterior or interior use depending upon the water resistance of the glue used to stick the plies together. The Greenply range, which includes the flagship brand Greenply Plywood, is made from the finest A+ grade timber and goes through a stringent 5-step preservative treatment, making it termite and borer resistant. Load-Span Tables for APA Structural-Use Panels Number Q225G February 2011 Load-span tables for specific structural-use panel applications are included in several APA publications. For SI: 1 pound per cubic foot = 16 kg/m 3. Log in to order at great trade prices. It is usually also protected by a solid colour stain or finish. Whilst exterior ply may not be pre-sanded and visually free of imperfections, it should still use 100% waterproof glue and should be suitable for permanent exposure to outdoor environments. Energy-Brace Interior Board is recognized by state inspectors and manufactured housing facilities nationally. Hardboard. mud or sill plate next to exterior plywood sheathing, FYI, although we make applying stucco or plaster appear easy like the old English phrase, “easy peasy lemon squeezy,”. CDX plywood is rough on both sides. International Plywood stocks a full range of sizes in both grades to ensure that the right product is available for our customers at all times. C & D grades are knotty, pitchy, and have lots of defects. , is a family-owned manufacturer of engineered wood products, lumber, plywood, particleboard and specialty panels. And if you're still wondering what roof sheathing is and what materials are typically used, read on and satisfy your curiosity. Any wood defects have been repaired with synthetic filler, so the veneer can be painted, making it ideal for furniture or cabinet doors. Essentially no formaldehyde emissions. Face is finish grade, back is solid and smooth. 7/16" OSB is used for exterior sheathing. Raja, T-11 is manufactured as an exterior siding and sometimes doubles as sheathing. Figure 6-8 shows the stamps found on the backs of structural and standard sheathing panels. Plywood The thermal resistance, or R-value (in ft2 - hr - °F / BTU), of plywood panels is listed below. Weather Defense Platinum Sheathing should not be used where temperaturesCONTRACTOR: exceed 125º F for extended periods or in areas of extreme humidity. DFP Select Exterior. Plytanium® plywood sheathing provides outstanding performance for walls and roofs in residential and light commercial construction. This range includes plywood, chipboard, medium density fibreboard, OSB, hardboard, fibreboard and & insulation board. 2 24 30 32 36 40 48 5/16 20/0 185 104 67 47 3/8 24/0 280 161 103 71 28. Solid dimensional lumber and timbers in Southern Pine, Douglas Fir, SPF and other wood species as #2 and higher grades. I'd like to hear from people who have worked with Dens-Glass sheathing from Georgia Pacific. Common structural sheathings include plywood, oriented strand board (OSB), wafer board, and exterior gypsum board. Roof sheathing; Exterior Fire-X lumber and plywood offers the workability and versatility of wood as well as the fire-safety and insurance advantages of non-combustible materials. Plywood, OSB, Sheet Goods. 3" tape / sealant 5 mm clr. This type of plywood is available in most grades and can be purchased in a variety of different species of wood such as oak, cherry and birch. If you are in need of rough exterior grade CDX plywood, come by Galliher & Huguely and get what you need, or if you can’t make it to our convenient NW Washington, DC location, let us deliver it to you. 1/2" CDX is commonly used as exterior sheathing. An evolution from traditional wood boards, sheathing products have moisture and mold resistant properties to help protect the structure of your space. The sheet goods that I have had decent luck with are Classicore or MDF core. Depending on the grade of plywood, it may or may not be smooth and useful for visually pleasing interior wood pieces. air barrier/sheathing membrane ventilated soffit panels balcony bug screen exterior grade plywood sheathing on 2 x -- tapered shims (one per joist) sloped to edge per structural engineer's. Contact us for pricing, minimum quantities and availability. Over the years I have seen claims for plywood decking delaminating, which can cause squeeks and knocks between the ply's. It adds proven performance and durability to new homes, room additions and renovations. Roof and Floor. Our selection of exterior use plywood includes Spruce – both Standard and Select, as well as Fir – Good one side (G1S), Standard & Select tongue and groove (T&G). the intended application. MDO is an excellent soffit material. 4 Plywood Grade Plywood is graded according to one of two basic systems. Plywood is made up of many layers of pressed wood glued together. Interior plywood (or engineered-grade plywood) is also made with water-resistant glue, but its veneers do not weather well. Anytime we use real plywood, we always use nails. EXTERIOR BASEMENT WALL. Log in to order at great trade prices. You can cut and sand Plyboo edge grain bamboo plywood with conventional woodworking equipment, and you can glue and fasten it just as you would do so with wood products. It's a stronger material, and it’s much more forgiving of moisture than OSB or particle board. untreated plywood maybe a few rains on the 5/8. It's a stronger material, and it’s much more forgiving of moisture than OSB or particle board. Exterior Gypsum Sheathing is designed for direct attachment to wood framing with. The thicker plywood sheathing allowed me to fasten the board and batten siding directly to the plywood sheathing and the plywood provided a big structural upgrade for my walls. The Span Rating on APA RATED SHEATHING panels appears as two numbers separated by a slash, such as 32/16, 48/24, etc. Sheathing Layout Install sheathing panels according to the recommendations of the Engineered Wood Association (APA). 25c Fiber cement panel siding 0. One side is a C grade and the other side is a D grade — both sides will often have open knots. Given the. I chose to remove the fiberboard and install 3/4″ plywood sheathing. I received a donation of plywood scraps. A sanded plywood panel with A-grade face, B-grade back and D-grade inner plies. Marine-grade plywood is a specially designed panel made of Douglas fir or Western Larch, according to APA: The Engineered Wood Association. Free Delivery on orders over £50 ex VAT and collection in 1 hour nationwide. ) See Treated Plywood (page 18) for recommended plywood grades and exposure durability classifications in applications requiring fire-retardant-treated or preservative-treated plywood. you can get away with more using 3/4 t&g, roof or subfloors. By asking building professionals what they expected in a PVC Trimboard and consulting consumers on what they wanted, Kleer developed a process that addressed those needs and now produces the next generation PVC trimboard. A special grade of plywood called "CDX" is a popular choice for roof sheathing. This plywood is not treated. Item # 190445. By reducing drywall cracks, the integrity and value of the interior and exterior walls is preserved. Exterior grade (X) plywood is bonded with a waterproof adhesive. I'd like to hear from people who have worked with Dens-Glass sheathing from Georgia Pacific. Depending on the materials used, wall. Much new construction uses exterior-grade plywood sheathing. Grade C and Grade D plywood have more initial defects than Grade A and Grade B plywood. The preservative process makes pressure treated plywood last long and is ideal for outdoor projects. These are plywood and OSB (oriented strand board) boards commonly used for sheathing walls, roofs, and decks. Suitable for high quality paint finish. Consult with. Wood framing members, including wood sheathing, that are in contact with exterior foundation walls and are less than 8 inches (203 mm) from exposed earth shall be of naturally durable or preservative-treated wood. Exterior plywood is not necessarily the best choice where plywood will be constantly exposed to the weather; plywood pressure-treated with preservative would probably be better. Chesapeake Plywood proudly offers a wide selection of Wholesale Hardwood Plywood, MDF, Marine Plywood, Fire Rated Products, Environmentally Friendly FSC, and No Added Formaldehyde sheet goods, Hardboard, Particleboard, Melamine and much more! We have wide variety of hard-to-find sheet stock up to 5×12 available for immediate shipment. They are used in the construction of a house exterior region or outdoor furniture. Available in 3/8″, 1/2″, 5/8″ and 3/4″ thicknesses. Wood framing members, including wood sheathing, that are in contact with exterior foundation walls and are less than 8 inches (203 mm) from exposed earth shall be of naturally durable or preservative-treated wood. 10 MARINE PLYWOOD, MELAMINE & SUBSTRATES p. Substrates:Brick, Concrete Block, Concrete, Stucco, Cement Board, Siliconized Core Gypsum, Exterior Grade Plywood, Oriented Strand Board, Exterior Grade Gypsum. The added weight on the wall is sometimes too much for two people to handle. Rated Sheathing Plywood sheathing is ideal for residential and light construction. Inventory is sold and received continuously throughout the day; therefore, the quantity shown may not be available when you get to the store. Shop severe weather 3/4-in common pine plywood sheathing , application as 4 x 8 in the plywood section of Lowes. OSB has over 70% market share for structural panels. •Resilient (Vinyl) Flooring: Using an 1/4" exterior grade AC plywood. Every roof has one of two sheathing options across the rafters - solid or open. Exposure 1 above. Pressure treated plywood is available in a variety of thicknesses and grades to meet the needs of just about any project. 4 Grades b) 1) DFP Select Tight Face Exterior. 1 Panel joint sealed. Plywood is ideal for applications requiring strong, cost-effective sheet material. The standard details various grades of structural plywood such as sheathing for roofs, walls and floors, sanded grades and plywood used in concrete formwork. PS 1-09 Rated Plywood. Plywood come in a vast array of qualities and grades. One is rated “C” grade and the other side is rated “D” grade. As with all our products, J. Plywood sheathing is commonly used on houses today. Hood Plywood Sheathing adds strength and durability to residential and commercial structures. Whereas, the last grade, i. Used for exterior wall sheathing, roofing, and underlayment "BC" -B-grade sanded veneer face, C-grade cores and back, exterior glue. Rated Sheathing Plywood sheathing is ideal for residential and light construction. 375 Hardboard sidingc 0. Exposure 1-rated panels and sheathing can withstand exposures to inclement weather during construction, but are not suitable for extended exposure. The bottom edge of the plywood sheets. Shop where the contractor's shop!. Detailed list of additional Stratton products. The major differences between marine plywood and exterior plywood come from the standards for plywood grades set forth by the American Plywood Association (APA). Spray foam with a minimum density of 2 lbs/ft 3 applied to the interior cavity side of wood structural panels, fiberboard, insulating sheathing or gypsum is deemed to meet the insulating sheathing requirement where the spray foam R-value meets or exceeds the specified insulating sheathing R value. A sanded plywood panel with A-grade face, B-grade back and D-grade inner plies. I plan on using AC exterior, but the lumberyard closest to me tell me that AC plywood is the same as AC Exterior. 5 cm (17-7/8”) o. This can last without a full sheathing, just taped seams for 10 years. FIBERGLASS MAT, MOISTURE- AND MOLD-RESISTANT EXTERIOR SHEATHING (TREATED CORE). Department of Commerce. Shop severe weather 3/4-in common pine plywood sheathing , application as 4 x 8 in the plywood section of Lowes. over water-repellent panel sheathing (UBC) including [weather-resistant exterior grade] plywood (SBC) under approved paper backed metal or wire fabric lath; behind lath and portland cement plaster applied to the underside of roof and eave projections. Applied around doors and windows, on holes or other small voids, JOINT TAPE stops outside air and moisture from entering the conditioned interior of the building, increasing energy efficiency and inhibiting corrosion of steel components. When shopping for 1/2-inch exterior-grade plywood, you. Dry plywood-type sheathing has a permeability ranging from 0. The letter “X” means the glue of the plywood is exterior glue. Exterior plywood - This is considered the most common type of plywood. Marine plywood (aka exterior plywood) is treated with a special adhesive and coating so that it will stand up to weather. 4 OSB Design and Application Guide PANEL GRADES OSB panels are available in three grades, identified by a designation of the intended end-use. You want to slide some wood underneath the plywood you are about to drill to protect the drill bit and flooring. If there are two numbers, the first refers to roof applications, the second to floor applications. Over the years I have seen claims for plywood decking delaminating, which can cause squeeks and knocks between the ply's. Most confusion arises from a misinterpretation of BS EN 636:2003 Plywood - Specifications, which classifies plywood for use in dry conditions (EN 636-1), humid conditions (EN 636-2) and exterior conditions (EN 636-3). OSB has over 70% market share for structural panels. ! Plywood must be a marine or exterior grade product. Another difference. Exterior Grade Softwood Plywood is most commonly used in the construction industry for its structural qualities and price point. PLYWOOD WALL SHEATHING (K11 415) General purpose H birch plywood, suitable for use in both interior and exterior applications. Used for exterior wall sheathing, roofing, and underlayment "BC" -B-grade sanded veneer face, C-grade cores and back, exterior glue. 3" tape / sealant 5 mm clr. Structural exterior wall sheathing ties framing studs together, making the walls resistant to twisting and bending. Sheathing: None, APA rated exterior grade minimum 7/16” plywood/OSB, ½” or 5/8” gypsum METAL STUDS Structural Sheathing Method Gauge: minimum 18 Spacing: 16” o. The preservative process makes pressure treated plywood last long and is ideal for outdoor projects. A-B Exterior A sanded plywood panel with A-grade face, B-grade back and C-grade inner plies. Sometimes there are large gaps between the boards and a layer of OSB or plywood is placed over the existing sheathing. Roseburg, based in Dillard, Ore. Cement plaster frequently is installed over a plywood base to provide beauty and protection to the building.