Technical Specifications

Rated Sheathing Product and Installation Information
PO Box 1110 | Alexandria, LA 71309
[phone] | royomartin.com
© 2008 RoyOMartin Made in the USA
(a) Not permitted. (b) 1/8” minimum for 3-, 4- and 5-ply 3-layer panels.
Available as FSC-Certified on request.
Description
Rated Sheathing is a structural wood panel composed of a D-grade
or better face, back and inner plies cross-banded for strength. It is
designated as Exposure 1 durability indicating it is bonded with an
exterior resin and designed for applications where slight construction
delays may be expected prior to providing protection or where high
moisture conditions may be encountered in service. It is a Group 1
species, which indicates it is classed among the strongest and stiffest.
Certification
³⁄₈”, ¹⁵⁄₃₂”, ¹⁹⁄₃₂”, and ²³⁄₃₂” panels are certified by APA-The Engineered
Wood Association - and are in compliance with APA Rated Sheathing,
PS 2-92. An APA stamp confirming compliance appears on each panel.
Fire Rating
Plywood 3/8” and thicker has been generically recognized as having
a Class C (III) flame-spread rating without need for test or label
according to HUD/FHA Manual of Acceptable Practices, Section 405-8
to the Minimum Property Standards, Interpretive Bulletin C-1-76 to the
HUD Manufactured Home Construction and Safety Standards.
Applications
Rated Sheathing is designed and manufactured specifically for
residential and other light frame wall sheathing, roof sheathing, and
sub-flooring applications.
Storage
When possible, store panels under roof or in a protected area,
especially if they won’t be installed soon after receipt. If panels must
be stored outside, stack them on a level platform supported by at
least three 4x4s to keep them off the ground. Cover the stack loosely
with non-transparent plastic sheets or tarps. Anchor the covering at
the top of the stack, but keep it open and away from the sides and
bottom to assure good ventilation. www.apawood.org
Handling
Protect the edges and ends of panels from damage. When receiving
panels that will be moved by forklift, place panels on pallets or bunks
to avoid damage from fork tines. Panels being transported on open
truck beds should be fully covered. www.apawood.org
Fastening
Nails can be placed near panel edges without splitting the panel.
Panels can be attached to steel or aluminum with mechanical
fasteners using self-drilling, self-tapping screws, or hardened helically
treaded nails.
Workability
Rated sheathing can be cut, drilled, routed, jointed, glued, fastened
and finished with ordinary tools and basic skill.
Panel Spacing
Plywood, like all wood products, will expand and shrink slightly
with changes in moisture content. To assure best performance for
all applications, panel joints (ends and edges) should be spaced ¹⁄₈”
unless otherwise recommended by the manufacturer. A 10d box nail
may be used to gauge the spacing between panels.
Important Notice to Buyers and Users of RoyOMartin Plywood: These instructions are not intended to cover every installation requirement, detail, or variation, nor do they provide for every possible
installation contingency. If any questions or problems arise concerning the installation of this product or its suitability for the purchaser’s particular use, inquiries should be made to RoyOMartin. The
information about products and application instructions printed herein is current at the time of publication; however, in accordance with RoyOMartin’s policy of constant product improvement, the right is
reserved to vary these application instructions and product specifications without notice. When placing your order, ask for the most recent product information.
Nailing Pattern and Sizes
Subflooring (Maximum Nail Spacing (in.))
Panel Span Panel Maximum Nail Size Supported Intermediate
Rating Thickness (in.) Span (in.) & Type Panel Edges Supports
32/16 nrzy” 16” 6d common 6” 12”
40/20 nvzy” 20” 8d common 6” 12”
48/24 opzy” 24” 8d common 6” 12”
Wall Sheathing (Maximum Nail Spacing (in.))
Panel Span Panel Maximum Nail Size Supported Intermediate
Rating Thickness (in.) Span (in.) & Type Panel Edges Supports
24/0 p” 24” 6d common 6” 12”
32/16 nrzy” 32” 6d common 6” 12”
40/20 nvzy” 40” 8d common 6” 12”
48/24 opzy” 48” 8d common 6” 12”
Roof Sheathing (Maximum Nail Spacing (in.))
Panel Span Panel Maximum Nail Size Supported Intermediate
Rating Thickn
ess (in.) Span (in.) & Type Panel Edges Supports
32/16 nrzy” 32” 6d common 6” 12”
40/20 nvzy” 40” 8d common 6” 12”
48/24 opzy” 48” 8d common 6” 12”
Targeted Size & Thickness Pcs. per Bundle Span Rating
48” x 96”, ³⁄₈”
105 pcs./bundles 24/0
48” x 96”, ¹⁵⁄₃₂” 84 pcs./bundles 32/16
48” x 96”, ¹⁹⁄₃₂” 66 pcs./bundles 40/20
48” x 96”,
²³⁄₃₂”
55 pcs./bundles 48/24
Span Ratings
Span Nominal Minimum Minimum Face & Back Veneer Thickness Inner Ply
Rating Panel Number of Before Pressing, for Species Group Species
Thickness Plies/Layers 1 2 3 4 Group
24/0 p” 3-3 nxw” (a) (a) (a) 1,2,3 or 4
32/16 nrzy” 3-3 nxw” n}” (a) (a) 1,2,3 or 4
40/20 nvzy” 3-3 (b) n}” (a) (a) 1,2,3 or 4
48/24 opzy” 4-3 nxw” n}” (a) (a) 1,2,3 or 4