| APPLICATIONS | General Description | Plywood Grade Rated (with span rating) | Non-Rated Plywood Grade | Bond Classification/Glue Line | Exterior veneer grades | Exposure 1 veneer grades | Span rating/support spacing and designated loading | ||
| NON-STRUCTURAL | Where appearance of both sides is important for interior applications, with smooth surfaces suitable for painting | A-A (NON-RATED) | US panels are available in two classifications: Exterior - equivalent to (BS) EN 314 Bond Class 3 or Exposure 1 (always includes D veneer) - Bond Class 2 | Face A; Inner C; Back A | Face A;Inner D; Back A | Span rating not applicable | |||
Changes to Standards & Regulations
Checklist: Changes to Standards and Regulations
Note on key structural standard (BS) EN 13986:2004+A1:2015
This is the overall harmonised/designated standard for the use of plywood, OSB and LVL in construction, defining their performance characteristic and test methods. Compliance confers a presumption of ‘fitness for purpose’ for a particular, intended end use.
It has been confirmed without change but it will re-enter the formal review process once the EU-CPR is revised. This sets down rules for construction and any changes to the EU-CPR are also likely to be reflected in a revised UK-CPR.
Decision on LVL standards still pending:
Decision on whether to amalgamate two LVL standards:
(BS) EN 14374:2004: Timber structures. Structural laminated veneer lumber. Requirements
(BS) EN 14279:2004+A1:2009: Definitions, classification and specification and include guidance on resistance to fire and fire protection ability
Standards under review:
Eurocode 5/(BS) EN 1995-1-1: 2004/A2: 2014: Design of timber structures – General – Common rules and rules for building
(BS) EN 310:2002 Wood-based panels – Determination of modulus of elasticity in bending and of bending strength
(BS) EN 317:1993 Particleboards and fibreboards – Determination of swelling in thickness after immersion in water
(BS) EN 318: 2002 Wood-based panels – Determination of dimensional changes associated with changes in relative humidity
(BS) EN 322:1993 Wood-based panels – Determination of moisture content
(BS) EN 323: 2002 Wood-based panels – Determination of density
(BS) EN 324-1:1993 Wood-based panels – Determination of dimension of boards – Determination of thickness, width and length
(BS) EN 324-2:1993 Wood-based panels – Determination of squareness and edge straightness
(BS) EN 326-1:1994 Wood-based panels – Sampling, cutting and inspection – Sampling and cutting of test pieces and inspection and expression of test results
(BS) EN 326-2:2010+A1:2014 Wood-based panels – Sampling, cutting and inspection – Initial type testing and factory production control
(BS) EN 350: 2016 Durability of wood and wood-based products – Testing and classification of the durability to biological agents of wood and wood-based materials
(BS) EN ISO 354: 2003 Measurement of sound absorption in a reverberation room
(BS) EN 383:2007 Timber structures – Testing methods – Determination of embedded strength and foundation values for dowel type fasteners
(BS) EN 594:2011 Timber structures – Test methods – Racking strength and stiffness of timber framed wall panels
(BS) EN 596:1995 Timber structures – Test methods – Soft body impact test of timber framed walls
(BS) EN 635-1:1995 Plywood – Classification by surface appearance – General
(BS) EN 1058:2009 Wood-based panels – Determination of characteristic 5 percentile values and characteristic mean values
(BS) EN 12114 : 2000 Thermal performance of buildings. Air permeability of building components and building elements. Laboratory test method
(BS) EN 12369-1:2001 Wood-based panels – Characteristic values for structural design – OSB, particleboards and fibreboards
(BS) EN 12369-2:2011 Wood-based panels – Characteristic values for structural design – Plywood
(BS) EN ISO 12460-5:2015 Wood-based panels – Determination of formaldehyde release – Extraction method (called the perforator method)
(BS) EN 12664: 2001 Thermal performance of building materials and products. Determination of thermal resistance
(BS) EN 12871:2013 Wood-based panels – Determination of performance characteristics for load bearing panels for use in floors, walls and roofs
(BS) EN 14272:2011 Plywood. Calculation method for some mechanical properties
EN 14279:2004+A1:2009 Laminated veneer lumber (LVL) – Definitions, classification and specifications
(BS) EN 14374:2004 Timber structures – Structural laminated veneer lumber – Requirements
(BS) EN 1438:1998 Symbols for timber and wood-based products
(BS) EN 16733:2016 Reaction to fire tests for building products – Determination of a building product’s propensity to undergo continuous smouldering