Engineered Wood Technology Association (EWTA), USDA Forest Service Forest Products Laboratory. The APA Product Support Help Desk is a free service available to answer your questions pertaining to the specification and application of engineered wood products and systems. When necessary, sand the subfloor near joints; install extra blocking and re-fasten the subfloor to flatten uneven areas. If Exposure 1-rated panels and sheathing do get wet, edge swelling may be experienced. New concrete slabs must be dry. It can be used as underlayment in kitchens, … Floorte™ resilient flooring is not recommended directly over fire-retardant treated plywood or preservative treated plywood. The products can also be used with metal lath over engineer-approved, APA-Rated exterior glue plywood or oriented strand board (OSB) (i.e., APA-Rated Exterior or Exposure 1 panels) wood subfloors following the Tile Council of North America's F-185-11 specification at a minimum ½ in. But, if you are using cheap <$1 peel&stick tiles, there's not much reason to spend a ton on the underlayment. (Installation instructions must be followed). Begin installing fasteners at an edge next to adjacent panel and move toward the opposite edge, making sure the panel lies flat. APA Rated Siding..... 11-13 APA Sanded and Touch-sanded Plywood ... PS 1-83 UNDERLAYMENT PRP-108 APA 24 oc 23/32 INCH SIZED FOR SPACING T&G NET WIDTH 47-1/2 EXPOSURE 1 RATED SHEATHING 32/16 000 PRP-108 HUD-UM-40C APA 15/32 INCH SIZED FOR SPACING EXPOSURE 1 000 PS 1-83 FHA-UM-64 PRP-108 APA SIZED FOR SPACING EXTERIOR RATED SIDING 303-18-S/W 11/32 … For floorings like vinyl or ceramic tile the addition of a separate APA underlayment would still be needed. Common Plywood Applications. Underlayment butt joints APA RATED SHEATHING or board subflooring (subflooring must be dry before laying Underlayment) No blocking required if Underlayment edge joints are offset from subfloor joints or if tongue and grooved (T&G) subfloor is used Resilient tile or sheet flooring, APA Rated Sturd-I-Floor is an excellent base for carpet and pad. x 23.75 in. When using carpet and pad, the best option is Sturd-I-Floor, which allows for completely bypassing installation of underlayment. a) For all flooring except the ToughGuard II Installation System, Armstrong Flooring recommends an additional 1/4" or thicker layer of APA plywood underlayment. Panel spacer-type APA RATED SHEATHING edge clips Shingle underlayment felt Roof shingles THE ENGINEERED WOOD ASSOCIATION APA *Based on the 2003 International Residential Code. Delivers superior strength and load bearing properties compared with just standard sheathing. Allow the panels to dry properly prior to installation. Particleboard, chipboard, flakeboard, OSB, hardboard or similar are not recommended subfloor materials and require the additional layer of an APA ¼” underlayment grade panel. 4. needed add an additional layer of APA rated underlayment, fasten and secure according to the underlayment manufacturer’s recommendations. Floors shall be smooth, permanently dry, clean, and free all foreign material such as dust, wax, solvents, paint, grease, oils, and old adhesive residue. 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. Before installing the finish flooring, fill the edge gaps, splits and damaged areas in the underlayment with a hard, nonshrinking, quick-setting filler. For pitched roofs wear skid-resistant shoes. APA RATED STURD-I-FLOOR 16, 20, AND 24 oc Strengt axis onstrtion adesie otional APA RATED STURD-I-FLOOR 48 oc 2x rim joist or APA Rim Board 1/8 saci is rcommdd at a d ad d joits To-ad-roo joits or oc ds 4x irdr or do 2x coctd totr 2x tratd si 4x4 ost 12 mi APA RATED STURD-I-FLOOR 48 oc (Over Supports 48" o.c.) APA B-D Exposure 1 " " " "APA Underlayment A-C Exterior Sanded Face APA Underlayment B-C 3 (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 ply-wood also may be used for underlayment … Recommended fasteners and schedules are given in APA's Engineered Wood Construction Guide, Form E30. The surface must be hard and dense, and free from powder or flaking. While APA Rated Sturd-I-Floor is an excellent base for carpet and pad, a sepa-rate layer of plywood underlayment is recommended for some types of finish flooring (see Table 1). Underlayment (Common: 3/16 in. 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. An additional layer of APA rated 1/4" thick underlayment should be installed. 5/8" Type X gypsum wallboard ceiling ONE-HOUR COMBUSTIBLE FLOOR-CEILING AND ROOF-CEILING ASSEMBLIES—LUMBER JOISTS Some rated assemblies incorporate proprietary products. Underlayment’s special face and inner-ply construction resists dents and punctures from concentrated loads. Category 1/4 APA Underlayment e Sanded Face Exposure 1 APA Rated Sturd-I-Floor 24 oc Exposure 1 or APA Rated Sheathing 48/24 Exposure 1 (for joists spaced 24 inches o.c. a. Double‐Layered APA rated plywood suboors should be a minimum 1" total thickness, with at least 18" well ventilated air space beneath. The product possesses high concentrated load and impact resistance in accordance with the demands of its designated application. To learn more about the building requirements for floors and specific uses of APA-rated products, as well as the APA Glued Floor System, refer to the “Floor Construction” section of the Engineered Wood Construction Guide. Selecting Underlayment. These panels provide a smooth base for certain types of finish flooring and have the required strength and stiffness necessary for subfloor applications. 1 For reference purposes only if printed or downloaded. • Single layer APA rated Sturd-I-Floor T&G Panels, minimum 23/32” over joists or trusses up to 19.2” on center • APA underlayment grade plywood • Oriented strand board (OSB) • NPA rated particleboard • On, above and below grade concrete • Gypsum topping and lightweight concrete • … Keep a bunch of extra tiles for when corners lift and get kicked off. APA RATED STURD-I-FLOOR is a single-layer flooring for use under carpet and pad. An underlayment is optional for Rated Sheathing or Sturd-I-Floor when used with hardwood. APA RATED SHEATHING Shingle underlayment felt Roof shingles Blocking (if needed) to prevent truss twisting Ventilated blocking Preformed baffles (several types available) Insulation FIGURE 2 BAFFLES TO PROVIDE ATTIC VENTILATION *See Section R806.2 of the 2012 International Residential Code or An additional layer of APA rated 1/4" thick underlayment should be installed. Concrete Subfloors. It should have an Exterior or Exposure 1 exposure durability classification and a fully sanded face. depth. 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. It can be used in place of separate subfloor and underlayment layers. APA Rated Sturd-I-Floor provides smooth surface for application of carpet and pad. Chip board, OSB, particleboard, construction grade plywood are generally not acceptable substrates – add a layer of APA underlayment grade ply wood De très nombreux exemples de phrases traduites contenant "apa rated sheathing" – Dictionnaire français-anglais et moteur de recherche de traductions françaises. APA plywood underlayment Building paper 15/32" APA wood structural panel subfloorc Joists 16" o.c. Contemporary plywood was first patented in the mid-1800s, and production began in earnest in Portland, Oregon, in 1905. Place screened surface of panel or side with skid-resistant … B. APA Rated Sturd-I-Floor® panels are specially designed as combination subfloor-underlayment. The Span rating on APA RATED STURD-I-FLOOR underlayment and APA RATED SIDING panels appears as a single number. Always protect plywood underlayment from moisture or damage prior to installation. Lightly sand any surface roughness, particularly around fasteners. Sign In Failed. NEW AND EXISTING CONCRETE … B. Download >, Technical Note: Acoustic Performance of All-Wood Floor Systems Panel grade—The term “grade” may refer to panel grade or veneer grade.Panel grades are generally identified in terms of the veneer grade used on the face and back of the panel (e.g., A-B, B-C) or by a name suggesting the panel’s intended end use (e.g., APA Rated Sheathing, Underlayment). B. Key Features and Benefits of APA Rated Sturd-I-Floor. Concrete Subfloors NEW AND EXISTING CONCRETE SUBFLOORS SHOULD MEET THE GUIDELINES OF THE LATEST EDITION OF ACI 302 AND ASTM F 710, “STANDARD PRACTICE FOR PREPARING CONCRETE FLOORS TO RECEIVE RESILIENT FLOORING” AVAILABLE FROM THE AMERICAN SOCIETY FOR TESTING AND MATERIALS, … or less). Strip or … Fire Resistance … Underlayment grades of plywood have a touch-sanded or fully-sanded face and a special face and/or inner-ply construction that resists punctures. 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