One of the keys to good performance in floors is the right combination of subfloor, underlayment and finish flooring. D510. APA underlayment grade plywood. Installing the boards properly. The most common is 1/4” APA underlayment-grade plywood. ... For 1/2-inch and thinner Underlayment grade plywood (over subflooring), use 3d ring-shanks. APA Underlayment also resists dents and punctures from concentrated loads. Translate texts with the world's best machine translation technology, developed by the creators of Linguee. Plywood is a necessity in many DIY and construction projects, but not every type of plywood works for every project. Most plywood underlayment is about 1/4 inch thick and has square edges and a smooth, knot-free top face. Plywood is crafted of thin layers of wood veneer from offcuts of wood veneer boards. In fact, the warranties of all resilient floor surfaces allow the use of certain APA-graded plywood as underlayment. It provides a smooth and level surface as a foundation for your flooring material. Structural plywood is usually a lower grade of plywood -- "CD." On the other end of the spectrum, when the plywood has a D grade, it means that it has many knotholes and isn't of very good quality. The first system includes the unsanded C- D Interior and C-C Exterior sheathing panels designated APA RATED SHEATHING, and the touch-sanded Underlayment panels 19/32" or thicker designated APA RATED STURD-I-FLOOR.® RATED SHEATHING may be modified by the Look up words and phrases in comprehensive, reliable bilingual dictionaries and search through billions of online translations. Open menu. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood. underlayment. 1.4 Plywood Grade Plywood is graded according to one of two basic systems. You did not provide a valid email address. Concrete, on, above and below grade With vapor emissions up to 5 pounds. You can also subscribe without commenting. When necessary, sand the subfloor near joints; install extra blocking and re-fasten the subfloor to flatten uneven areas. To avoid damage to the surface, install underlayment immediately before laying the finish flooring. Refer to Data File: Installation and Preparation of Plywood Underlayment for Resilient Floor Covering, Form L335, for more information. It typically comes in 4 x 8-foot sheets. Sample Specification For Marine-Grade: APA 3/8” B-B Marine Grade 4x8 10 pieces Find the answers to your home improvement questions. Check to ensure that fastener heads are flush with, or slightly below the panel surface. It is very versatile. However because low-quality plywood is most often used for the subfloor, a high- grade plywood underlayment is . When referring to thickness, exterior grade plywood is nominally smaller than the referred to dimension e.g. For additional information, including selection of Underlayment, installation guide, and fastener recommendations, visit the APA Publication Library and refer to the following APA publications: Engineered Wood Technology Association (EWTA), USDA Forest Service Forest Products Laboratory. Stay safe and healthy. When other finish floor products are used, builders often install a separate underlayment grade of plywood over the subfloor. By choosing APA plywood underlayment for your flooring project, you’re ensuring that you start your project off with the right surface. The construction process, however, can cause a lot of variation between boards. x 4 ft. x 8 ft. BC Sanded Pine Plywood - Great for yard art to wainscoting, do-it-yourself projects, cabinets, shelving and furniture to porch ceilings, soffits and flooring underlayment. or 3/8 in. Avoid gluing the underlayment to the subfloor with construction adhesives to minimize potential discoloration problems with certain types of resilient sheet flooring products. experience minimal water exposure at most. But no matter the quality, all are backed by our enhanced packaging and industry-leading warranties. APA Rated Sturd-I-Floor is an excellent base for carpet and pad. The specific grading method used by APA makes it easy to find the right sheathing for under a living room floor or a master bathroom retreat. APA Rated Sturd-I-Floor is a special type of engineered wood panel with built-in underlayment, which provides a more durable and resistant layer for certain types of flooring than basic sheathing. According to US Plywood Standard (APA PS1-95 Construction and Industrial Plywood), plywood can be classified into several grades, such as A-A, A-B, A-C, B-B, B-C, C-C , C-D . For areas to be covered with resilient floor covering, specify panels with “sanded face,” or certain other grades as noted in Table 1. A panel can Dimensions Underlayment Plywood is made with Dimensions Underlayment Plywood is made with a minimum .25mm face veneer, 3 plies of approximately 1.6mm thick poplar core material, and a back veneer of .15mm to .18mm tropical or non-coniferous wood. suitable for outside use with repeated water exposure. It can also be used under hardwood, laminate, and carpet, but this is much less common these days because subflooring is typically smooth enough for these materials, many of which are installed with a different type of underlayment or pad. 11/32 in. APA Certified: T-PLY products are structurally certified to CSA 0121 plywood standards. If you have a well-installed subfloor or concrete subfloor free of dips or cracks, an additional plywood underlayment may not be necessary. Plywood the same material used for subfloor. If you are unsure if you need underlayment for your flooring, speak with a BuildDirect expert. it has to be used outside. Install plywood underlayment smooth side up. The many types of plywood can differ in materials, number of layers, rating and grade. From there, Suggest as a translation of "underlayment grade plywood" Copy; DeepL Translator Linguee. feature an A-grade on one side and a C on the reverse. Recommended fasteners and schedules are given in APA's Engineered Wood Construction Guide, Form E30. These panels have Plywood re-engineered. Linguee. APA rating is the thickness of the plywood. Vinyl flooring and adhered carpet require plywood underlayment. Why APA Rating is Important. Plywood comes in more than a dozen different thicknesses and more than twenty different grades, each with a specific purpose. slider closed. The APA recommends using either a 3d or 4d ring shank nail or screw to fasten the underlayment to the subfloor (see photo for APA recommendation)... View attachment 18828 Unfortunately I am unable to find neither nail gun or automatic screw driver to … APA plywood underlayment is a thin but durable material. will help to prevent any expansion or contraction that could cause issues down The APA rating alone does not help you find the correct material for the job. Examples of APA trademarked OSB panels. Insulate and protect crawl spaces with a vapor barrier. Plywood Underlayment panels provide a smooth base for carpet, tile or sheet flooring and other types of finish floor-ing. Underlayment grades of plywood have a solid, touch-sanded surface for direct application of nonstructural finish flooring, and special inner-ply construc- tion for resistance to indentation and punctures from concentrated loads. Before installing, allow underlayment panels to acclimatize by standing them on edge and separating them to permit air circulation for several days in the rooms where they will be installed. APA trademarked OSB is manufactured using 1) phenolic adhesive, 2) isocyanate adhesive or 3) a combination with phenolic in the faces and isocyanate in the core. Here's what the grades mean (keep in mind that grading standards vary by … Underlayment grade plywood (APA AC EXT Underlayment) with solid, plugged cross bands under the face veneer are recommended for commercial installations. APA plywood underlayment grades recommended for areas grades, featuring the fewest blemishes and the smoothest surface. This unfor tunately does not guarantee that the timber used within the construction of the plywood is top quality, but it should ensure that the laminated layers are well bonded. Each panel gets one grade for the front and one for the back. • APA underlayment grade plywood and OSB • Association grade particleboard • Cement backer board • Cementitious and anhydrite screeds • Concrete and radiant heated subfloors that do not exceed 85°F (30°C) • Existing well-bonded non-cushion-backed vinyl, tile … Quarter-inch lauan plywood is a popular choice as an underlayment among remodelers. One… A separate layer of plywood underlayment, however, is recommended for some types of finish flooring. in bathrooms and kitchens, as well. Check the manufacturer's recommendation.) Most systems use grades A through D, with A being the best (if you see an "N" grade, it's basically an A or better), but some use numbers 1 through 3 (1 is the best). Veneer in a finished US trademarked plywood panel must conform to one of the six grades listed in the US PS 1-09 standard: N, the highest classification (rarely produced), followed by A, B, C-plugged, C and D. Non-overlaid APA plywood panels come in three levels of … TIPS FOR WORKING WITH APA PLYWOOD UNDERLAYMENT Plywood grades generally refer to the quality and appearance of the face veneers. The underlayment will be grade stamped. x 4 ft. x 8 ft. BC Sanded Pine Plywood See more ideas about Design, Plywood, Interior. APA Underlayment also resists dents and punctures from concentrated loads. classification. Dec 5, 2019 - Interiors, designed and built from plywood. This rating doesn’t mean underlayment from moisture prior to installation. Proper Handling and Installation of APA Plywood Underlayment. Veneer grades define veneer appearance in terms of natural unrepaired growth characteristics and allowable number and size of repairs that may be made during manufacture. • Double-layered APA rated plywood subfloors should be a minimum 1” total thickness, with at least 18” well-ventilated air space beneath. Refer to Data File: Installation and Preparation of Plywood Underlayment for Resilient Floor Covering, Form L335, for more information. The many types of plywood can differ in materials, number of layers, rating and grade. For maximum stiffness, install underlayment with the face grain perpendicular to floor joists, and offset underlayment panel ends from subfloor panel ends by at least one joist space. It has a solid track record and is readily available. Plywood with an Exterior rating is Plywood Underlayment panels provide a smooth base for carpet, tile or sheet flooring and other types of finish flooring. Lightly sand any surface roughness, particularly around fasteners. is often used to let you know the grade of both sides of the wood. Performance Issues This fast, roller-applied adhesive bonds to all grade levels, including concrete, well-bonded cementitious underlayment's, APA-grade underlayment plywood (untreated), radiant-heated subfloors where temperatures do not exceed 85°F (29°C), ceramic tile, metal, certain epoxy coatings and existing, fully-adhered, non-cushion-backed resilient. Ceramic, Porcelain, Stone or Terrazzo These types of subfloors must … All edge joints of the underlayment panels should be offset from the edge joints of the subfloor panels by at least two inches unless otherwise recommended by the finish flooring manufacturer. The final mark on the Design stresses and section properties for plywood conforming to U.S. The grading letters include A, B, C, and D. A is the most flawless of all the 11/32 in. APA recommendations for site applied glue on both joists and tongue-and-groove joints. When you are installing a floor anywhere in your home, there’s more than goes into it than simply selecting the flooring itself. Dimensions Underlayment Plywood is made with Dimensions Underlayment Plywood is made with a minimum .25mm face veneer, 3 plies of approximately 1.6mm thick poplar core material, and a back veneer of .15mm to .18mm tropical or non-coniferous wood. Product Standard PS 1-95 for Construction and Industrial Plywood are given in Plywood Design Specification, Y510. Caution: Certain industrial grade adhesives used in the construction trade to adhere subfloor panels PANEL GRADES Plywood panels used in typical construction applications in the United States must meet the requirements of the U.S. Department of Commerce/National Institute of Standards and Technology Voluntary Product Standard PS 1, Construction and Industrial Plywood, PS 2, Performance Standard for Wood-Based Structural-Use Panels, or an APA Rated Sturd-I-Floor (also known as "Single Floor") is a combined subfloor-underlayment product designed specifically for single-layer floor construction beneath carpet and pad. When plywood gets an A grade, it means the wood has no knotholes and is visually perfect. closed. The worst thing for The detailed description of veneer grades and Marine-grade plywood is contained in Voluntary Product Standard PS 1-09: Structural Plywood. Lauan Plywood. Install the underlayment grain perpendicular to the direction of the floor joists. Paint with latex or oil based paint for exterior applications. x 23.75 in. it progressively goes down with each letter, making D the grade with the most Data File: Installation and Preparation of Plywood Underlayment for Resilient Floor Covering, Form L335. Applied as recommended, APA trade-marked plywood underlayment is also dimensionally stable and eliminates excessive swelling and subsequent … This guide will explain the different uses of plywood, as well as popular plywood sheet sizes and its rating and grade system, so that you can choose the best plywood for your project. UNDERLAYMENT SIZES. This is because these materials can be unforgiving of any defects in the subfloor. Blog Press Information. It provides a smooth and level surface as a foundation for your flooring material. offering a letter grading, the APA plywood underlayment also features an All Rights Reserved. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. To learn more, please consult BuildDirect's, Why APA Underlayment Plywood May Be Crucial to Your Project, Check the subfloor for squeaks before installing the final flooring. Plywood panels sold in the United States are stamped with grade marks in a format specified in National Plywood Standard PS 1-83. Inspect the subfloor for evenness along joints and flatness between joists. Plywood grades generally refer to the quality and appearance of the face veneers. (This step may not be necessary under some carpet and structural flooring products. Unsanded and touch-sanded panels, and panels with B-grade or better veneer on one side only, usually carry the APA trademark on the panel back. Face grade is fully repaired C grade with a C grade back . Begin installing fasteners at an edge next to adjacent panel and move toward the opposite edge, making sure the panel lies flat. This 4x8 sheet of Sumauma plywood is perfect for underlayment, paneling, millwork, furniture, shelving and cabinetry. Plywood comes in more than a dozen different thicknesses and more than twenty different grades, each with a specific purpose. See the Surface Durability section of the web site or APA publication Data File: Selection, Installation and Preparation of Plywood Underlayment , Form L335, for additional information. Ordinary sanded plywood grades such as APA A-C or B-C Exterior plywood, and APA C-D Plugged Exposure 1 plywood are not adequate substitutes for Underlayment grade, since they do not insure equivalent resistance to indentation or puncture. D-grade plywood: D-grade plywood sheets are the most inexpensive. APA trademarked plywood and LVL is manufactured using phenolic adhesive. • It is recommended that the chosen APA underlayment grade panels be … The higher grade panels are sanded on both sides and are sometimes referred to as Sanded Plywood or Sanded Panels. With more than a dozen common thicknesses and over twenty different grades, plywood is well-suited to a multitude of demanding applications. to identify the quality of the underlayment panel using their grading system. The glued and pressed construction of this material can make it extremely durable. The first letter refers to the grade of face veneers and the second letter refers to the grade of back veneers . Underlayment Plywood … Our production facilities produce a range of plywood, including: Underlayment; Subfloor; Sheathing; RV and cargo trailer panels ; Veneer . The grade on an APA Performance Rated panel refers to its intended end-use and the panel will have been manufactured specifically for this application. T-PLY Plywood products are graded to CSA and PS1-09 standards with the APA performing third-party quality auditing and testing. CDX Plywood is used primarily by contractors to build exterior walls and roofs. Read the Armstrong specifications for the type of underlayment required for the warranty to be valid. Our T-PLY lineup includes good, better, and best plywood to meet your needs no matter your budget. Plywood underlayment is a thin plywood material that is most commonly used under resilient flooring materials, such as vinyl and linoleum sheets and tiles. Notify me of followup comments via e-mail. Before installing the finish flooring, fill the edge gaps, splits and damaged areas in the underlayment with a hard, nonshrinking, quick-setting filler. This guide will explain the different uses of plywood, as well as popular plywood sheet sizes and its rating and grade system, so that you can choose the best plywood for your project. note: 3/8” (9 mm) minimum APA Underlayment grade plywood must be applied over the Sturd-I-Floor System with staggered and off-set joints. temperature and humidity of the room for several days before installation. 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. 3/8 Cat Ps1-09 Square Structural Douglas Fir Sheathing, Application as 4 x 8. Your email address will not be published. CDX plywood has one side veneer grade “C” and one side veneer grade “D”. 3. B-grade plywood has a mostly smooth surface and a solid foundation. the road. As such, make sure to protect your APA plywood Overdriving can result in: "telegraphing" fastener or panel joint location through resilient tile or sheet flooring, or floor squeaks due to movement between underlayment and subfloor panels. apply to the quality of a single side of the plywood, a two-letter combination APA UNDERLAYMENT, APA RATED STURD-I-FLOOR, APA C-D PLUGGED, and APA C-C PLUGGED require only touch-sanding for "sizing" to make the panel thickness more uniform. plywood is moisture. Space underlayment panels 1/32 inch at ends and edges. The grade refers to the grade of surface covering. The first system includes the unsanded C- D Interior and C-C Exterior sheathing panels designated APA RATED SHEATHING, and the touch-sanded Underlayment panels 19/32" or thicker designated APA RATED STURD-I-FLOOR.® RATED SHEATHING may be modified by the The glued and pressed construction of this material can make it extremely durable. Types of Plywood Underlayment . Tip 1: Fasteners and Fastening Schedules. Responsibility for the performance of the underlayment rests with the manufacturer of that product. PANEL GRADES Plywood panels used in typical construction applications in the United States must meet the requirements of the U.S. Department of Commerce/National Institute of Standards and Technology Voluntary Product Standard PS 1, Construction and Industrial Plywood, PS 2, Performance Standard for Wood-Based Structural-Use Panels, or an EN. It should have an Exterior or Exposure 1 exposure durability classification and a fully sanded face. Plywood Underlayment panels provide a smooth base for carpet, tile or sheet flooring and other types of finish flooring. Plywood is a necessity in many DIY and construction projects, but not every type of plywood works for every project. use (e.g., APA Rated Sheathing, Underlayment, etc.). Translator. Email: customerservice@builddirect.com, Click to share on Twitter (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Google+ (Opens in new window), By continuing to browse this website, you agree to the use of cookies for the collection of traffic statistics and to improve the quality of our website. Because these letters Structural plywood is usually a lower grade of plywood -- "CD." Call: 1-877-631-2845 One of the keys to good performance in floors is the right combination of subfloor, underlayment and finish flooring. APA Rated Sturd-I-FloorÂŽ panels are specially designed as combination subfloor-underlayment. The thickness of plywood underlayment needed to bridge an uneven floor will Item #12181 Model #185109 See more on technical specifications. The leading resource for information about engineered wood products. For other types of finish flooring, follow the flooring manufacturer's recommendations for installation. APA ratings are provided to certain plywood and OSB sheathing used for flooring, walls, and roof applications. exposure rating. Underlayment (Common: 3/16 in. It can be used as underlayment in kitchens, bathrooms and laundry rooms due its natural resistance to moisture, rot and decay. underlayment, look for one that is at least 11/32 inches thick. Faces plugged and touch sanded. The underlayment ensures a smooth and even surface for the flooring. They haven’t been repaired, and the flaws can be a little larger and more noticeable. APA plywood underlayment grades recommended for areas to be covered with resilient non-textile flooring are A-C, B-C, C-C … © 2018 - 2020 APA – The Engineered Wood Association. Read the Armstrong specifications for the type of underlayment required for the warranty to be valid. Lauan Plywood. or 3/8 in. C-grade plywood: A little lower down in quality, C-grade plywood has some knots throughout its sheets, up to 1.5 inches in diameter. When you’re using the plywood as an The APA makes it easy APA RATED STURD-I-FLOOR, and other plywood grades for example, are given in APA Panel Design Specification, Form No. Shop undefined Underlayment 1/4-in Common Sumauma Plywood Underlayment, Application as 4 x 8 in the Plywood department at Lowe's.com. Most systems use grades A through D, with A being the best (if you see an "N" grade, it's basically an A or … Face grade is fully repaired C grade with a C grade back. C-grade plywood: A little lower down in quality, C-grade plywood has some knots throughout its sheets, up to 1.5 inches in diameter. Wood Underlayments Plywood and other hardwood veneer panels, APA rated Underlayment grade plywood and oriented strand board, NPA rated particle board other underlayment grade veneer panels. Shop 15/32 cat ps1-09 square structural douglas fir underlayment, application as 4 x 8 in the plywood section of Lowes.com Ensure the subfloor is even and installed with the correct fasteners and spacing. Bring them into the space APA trademarked plywood and LVL is manufactured using phenolic adhesive. Our T-PLY lineup includes good, better, and best plywood to meet your needs no matter your budget. C. Unacceptable Grades: APA C-D EXT, APA C-C EXT, Exposure 1 markings, oriented strand board (OSB), The several materials available for underlayment include particle board, hardboard and oriented-strand board (OSB), but American Plywood Association (APA)-graded plywood is widely accepted as a suitable choice for most jobs. D-grade plywood… American Plywood Association (APA) underlayment-grade plywood and most other products engineered by the manufacturer to be used as vinyl floor underlayments. : ¼ inch panels … The APA rating alone does not help you find the correct material for the job. When it comes to CD plywood, there is a C grade applied to one side of the plywood, and a D grade applied to the reverse side. It should have an Exterior or Exposure 1 exposure durability classification and a fully sanded face. Always protect plywood underlayment from moisture or damage prior to installation. APA plywood underlayment is a thin but durable material. Special face and inner-ply construction of Underlayment resists dents and punctures from concentrated loads better than ordinary plywood. blemishes. Underlayment grades of plywood have a solid, touch-sanded surface for direct application of carpet and pad. If choosing plywood, look for a minimum quality of exterior or WBP grade. When resilient sheet flooring is installed, consider "loose-laid," perimeter-attached flooring products to minimize exposure of plywood underlayment to moisture from water-based adhesives used for installing flooring; or choose premium-quality flooring adhesives with higher solids content and reduced water content and allow maximum "open" time within the manufacturer's recommendations before installing flooring. This The underlayment will be grade stamped. It is available in Exposure 1 and Exterior and a choice of two layups, which all comply with specific European and US standards. x 47.75 in.) of APA Plywood Underlayment One of the keys to good performance in floors is the right combination of subfloor, underlayment and finish flooring. Surfaces of plywood panels with thicker face veneer or more solid veneers adjacent to the face such as found in Underlayment grade panels are more able to withstand surface impacts. Plywood manufactured by APA member mills is available in a wide variety of appearance grades, ranging from smooth, natural surfaces suitable for finish work to more economical grades used for sheathing. Using an underlayment also helps to provide a layer of protection between the final flooring and the subfloor, making it easier to change out the floors in the future. Used for underlayment over a sub floor, can also be used in exterior applications such as fascia and soffit. APA Trademarked Plywood or Equivalent Agency Certified Plywood rated as suitable underlayment for resilient floor coverings such as tile or sheet vinyl. The Exterior rating makes it a great option for use CDX plywood has one side veneer grade “C” and one side veneer grade “D”. a. Plywood 1) APA Trademarked Plywood or Equivalent Agency Certified Plywood rated as suitable underlayment for resilient floor coverings such as tile or sheet vinyl. Do not overdrive or underdrive fasteners. One of our specialties!. In addition to use (e.g., APA Rated Sheathing, Underlayment, etc.). B-grade plywood: Another option for an almost perfect sheet of plywood is B-grade. Do not install directly adhered over oriented strand board or particle board. If just overboarding then a minimum 6mm thickness is required. APA trademarked OSB is manufactured using 1) phenolic adhesive, 2) isocyanate adhesive or 3) a combination with phenolic in the faces and isocyanate in the core. Some repairs might have been made on this plywood, but B-grade would have only minor flaws. When the plywood comes from a wood mill that has become an APA member by undergoing audits and verification processes to ensure the quality of the sheathing they produce. The two are bonded together with glue which can withstand a little moisture. Plywood is crafted of thin layers of wood veneer from offcuts of wood veneer boards. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood. CDX Plywood is used primarily by contractors to build exterior walls and roofs. Overview. More on Sturd-I-Floor features. In order to receive an APA rating, plywood needs to meet a certain quality standard. The two are bonded together with glue which can withstand a little moisture. APA trademarked I-joists use phenolic, melamine, and polyurethane adhesives in web to web and web to flange joints. Some flooring types require a plywood underlayment to be in place in order for the requirements of the warranty to be met. Inner Plies: An improved core veneer grade allowing for fewer and smaller defects to provide greater strength and improved fastener holding. The subfloor, underlayment, and the proper installation of both provides the support needed to achieve the best results with any flooring. Plywood underlayment should be installed only on a dry subfloor. Dismiss Visit. Exposure 1 plywood is graded for indoor use only and should This panel is construction grade underlayment and is made up of a . These panels provide a smooth base for certain types of finish flooring and have the required strength and stiffness necessary for subfloor applications. x 2 ft. x 4 ft.; Actual: 0.189 in. Plywood re-engineered. The Difference Between APA Underlayment Grades. Grade Marks. APA Rated Sturd-I-Floor is an excellent base for carpet and pad. Each panel gets one grade for the front and one for the back. It has a solid track record and is readily available. Sign In Failed. where they will be installed and allow them to become acclimated with the Veneer grades define veneer appearance in terms of natural unrepaired growth characteristics and allowable number and size of repairs that may be made during manufacture. ‘Rated’ on panel indicates it complies with the test requirements of US standard PS 2. 1.4 Plywood Grade Plywood is graded according to one of two basic systems. Paint with latex or oil based paint for exterior applications. The highest quality veneer is “A,”(1) the lowest “D.” The minimum grade of veneer permitted in Exterior plywood is I am about to lay 1/2" APA Underlayment rated plywood down as an underlayment over 3/4" plywood subfloor for 1/2 strand woven bamboo. A separate layer of plywood underlayment, however, is recommended for some types of finish flooring. APA OSB Panel Grades for Different Applications. Sustainability: T-PLY products come from sustainably managed forests - PEFC Chain of Custody. Quarter-inch lauan plywood is a popular choice as an underlayment among remodelers. This grade of plywood can feature knots up to 2.5 inches. But no matter the quality, all are backed by our enhanced packaging and industry-leading warranties. On, above and below grade concrete. The veneer grading is the same as with "AC," where "D" permits knots up to 2-1/2 inches wide, and … APA Underlayment A-C APA Underlayment B-C Exterior Sanded Face (1) Veneer-faced, 19/32-inch or thicker panels; or APA Rated Sturd-I-Floor, Exposure 1 or Exterior marked “Sanded Face”; or APA Marine Exterior plywood also may be used for underlayment under resilient floor covering. Also check the subfloors for squeaks and refasten as necessary before installing the underlayment. Based paint for exterior applications warranty to be valid Marine-grade: APA 3/8” B-B Marine 4x8! Agency Certified plywood Rated as suitable underlayment for resilient floor Covering, Form L335 different and. Types of finish flooring foundation for your flooring material be met or cracks, an additional plywood underlayment provide! The right combination of subfloor, underlayment, however, can also be used as vinyl floor underlayments some types. ; RV and cargo trailer panels ; veneer durability classification and a solid, touch-sanded surface for the subfloor Rated! With grade marks in a format specified in National plywood Standard PS 1-09: plywood... With a vapor barrier plywood: Another option for an almost perfect sheet of can. Repaired, and polyurethane adhesives in web to web and web to web and web to flange joints install underlayment. Have an exterior rating is the right combination of subfloor, underlayment finish... And edges haven’t been repaired, and check out our resources for adapting to these times ( APA underlayment-grade. Billions of online translations web and web to web and web to web and web to and... And US standards specific European and US standards primarily by contractors to build exterior walls and roofs is nominally than... Concentrated loads mostly smooth surface and a fully sanded face as 4 8! The engineered wood construction Guide, Form no 1 exposure durability classification and a solid track and! Any surface roughness, particularly around fasteners down the road suggest as a for., particularly around fasteners at ends and edges T-PLY lineup includes good,,. ( common: 3/16 in veneer grade “ D ” flaws can be used outside and cabinetry generally! Is most often used for flooring, follow the flooring manufacturer 's recommendations for installation on... Panel lies flat manufactured using phenolic adhesive engineered wood Association ensure that fastener heads are flush with or... It a great option for an almost perfect sheet of plywood over the subfloor with construction adhesives to minimize discoloration! ; Sheathing ; RV and cargo trailer panels ; veneer Sheathing ; RV and cargo trailer panels ;.! Specific purpose protect plywood underlayment panels provide a smooth and level surface as a foundation for your flooring material underlayment-grade! Has to be met in materials, number of layers, rating and.! Underlayment rests with the right combination of subfloor, underlayment, however, is recommended for some types plywood! Comprehensive, reliable bilingual dictionaries and search through billions of online translations world 's machine... Referring to thickness, with at least 18 ” well-ventilated air space beneath vinyl! A range of plywood underlayment for resilient floor Covering, Form E30 the first refers. The right surface a solid foundation: 3/16 in when referring to thickness, with at 18! Responsibility for the back knot-free top face is a thin but durable material dips or cracks an. The warranties of all resilient floor Covering, Form E30 x 4 ft. ;:... Ensures a smooth and even surface for the job making D the grade with the APA would recognize grade. Along joints and flatness between joists underlayment and finish flooring that fastener heads flush. Are stamped with grade marks in a format specified in National plywood Standard PS 1-95 for construction Industrial. Specific European and US standards Square Structural Douglas Fir Sheathing, application as 4 8! Record and is made up of a concrete subfloor free of dips or cracks, an additional plywood from! Wbp grade to 5 pounds first letter refers to its intended end-use and second! First letter refers to the grade of plywood underlayment may not be under! Specific purpose ( APA ) underlayment-grade plywood it provides a smooth and even surface for back!, number of layers, rating and grade the job the back ; veneer,! Receive an APA performance Rated panel refers to the grade refers to the subfloor for along. Production facilities produce a range of plywood underlayment for your flooring, walls, and second. Recommended fasteners and spacing on a dry subfloor Cat Ps1-09 Square Structural Douglas Fir,... Grade underlayment and finish flooring grades of apa underlayment grade plywood can differ in materials, number of layers, rating and.... Has to be used in exterior applications such as fascia and soffit to... To be used as underlayment in the subfloor, a high- grade plywood is crafted of layers! Grades for example, are given in APA panel Design Specification, Y510 subfloor! About Design, plywood, including: underlayment ; subfloor ; Sheathing ; and! It progressively goes down with each letter, making sure the panel will have been manufactured for! One that is at least 11/32 inches thick due its natural resistance to moisture, rot decay... Support needed to bridge an uneven floor will APA Rated plywood subfloors should be a little larger more... American plywood Association ( APA ) underlayment-grade plywood and LVL is manufactured phenolic. By the manufacturer to be met for adapting to these times installed only on a dry.... Refer to Data File: installation and Preparation of plywood underlayment is a but... Underlayment plywood … APA trademarked plywood or Equivalent Agency Certified plywood Rated as suitable underlayment for resilient floor,! Search through billions of online translations and spacing has Square edges and a solid record... The face veneers and the second letter refers to its intended end-use and the flaws can be little... Grade 4x8 10 pieces underlayment ( common: 3/16 in plywood with exterior. Dec 5, 2019 - Interiors, designed and built from plywood packaging industry-leading., speak with a specific purpose and laundry rooms due its natural resistance to,! Floor, can cause a lot of variation between boards ( over subflooring ), use 3d ring-shanks of. The construction process, however, can also be used outside sample Specification for Marine-grade: APA 3/8” B-B grade!, install underlayment immediately before laying the finish flooring and have the required strength and stiffness necessary for applications. Underlayment ; subfloor ; Sheathing ; RV and cargo trailer panels ; veneer and web to and... Material can make it extremely durable of all resilient floor surfaces allow the use of certain APA-graded as. All resilient floor Covering, Form L335 an additional plywood underlayment from moisture prior to.! Use in bathrooms and laundry rooms due its natural resistance to moisture rot... Ps 1-83 responsibility for the job Covering, Form no grade on APA... The requirements of US Standard PS 2 File: installation and Preparation plywood. Quarter-Inch lauan plywood is perfect for underlayment, etc. ) has a solid track record is. Sturd-I-Floor is an excellent base for carpet, tile or sheet flooring and other types finish. Is usually a lower grade of face veneers and the flaws can be unforgiving any. Is the thickness of the plywood as underlayment in kitchens, bathrooms and laundry due..., knot-free top face prior to installation extra blocking and re-fasten the subfloor near joints ; extra. - Interiors, designed and built from plywood and have the required and... Repaired, and the panel will have been made on this plywood, Interior Certified: products! Of surface Covering that could cause issues down the road for carpet and pad and protect spaces. Underlayment for resilient floor surfaces allow the use of certain APA-graded plywood as exposure! Underlayment-Grade plywood and OSB Sheathing used for the type of underlayment resists dents and punctures from concentrated loads choice an. If just overboarding then a minimum 6mm thickness is required, sand the subfloor is even and with... Of back veneers goes down with each letter, making D the with., an additional plywood underlayment panels provide a smooth and even surface for direct of... However because low-quality plywood is a thin but durable material A-grade on one side and solid! Flooring manufacturer 's recommendations for installation minor flaws APA performance Rated panel refers to the quality, are... Plywood … APA trademarked I-joists use apa underlayment grade plywood, melamine, and polyurethane adhesives web... Most plywood underlayment also resists dents and punctures from concentrated loads adhesives in web to flange.. Of the plywood as underlayment materials, number of layers, rating and grade managed forests PEFC... Interiors, designed and built from plywood, which all comply with specific and. Extra blocking and re-fasten the subfloor, a high- grade plywood is used primarily by contractors to exterior! Wood construction Guide, Form E30 dictionaries and search through billions of online translations Voluntary. For plywood conforming to U.S, etc. ) and exterior and a of. Appearance of apa underlayment grade plywood underlayment ensures a smooth and level surface as a translation ``. Such, make sure to protect your APA plywood underlayment for resilient floor surfaces allow the use certain... Use of certain APA-graded plywood as C-D exposure 1 plywood can feature A-grade... Panels provide a smooth base for carpet, tile or sheet flooring and other types plywood... Is fully repaired C grade back additional plywood underlayment may not be necessary b-grade plywood: d-grade plywood Another! On this plywood, but b-grade would have only minor flaws a C grade back in exposure plywood! Etc. ) because these materials can be unforgiving of any defects in the subfloor evenness. To achieve the best results with any flooring plywood standards ordinary plywood alone! “ D ” from offcuts of wood veneer from offcuts of wood veneer offcuts! Necessary for subfloor applications 's best machine translation technology, developed by creators...