SHEET MATERIALS - Travis Perkins

jargon buster
BB face
Some minor defects are allowed, but panel
should be repaired and sanded to give a
smooth finish. Travis Perkins Q Mark plywood
although specified as a BB face is in reality
closer to a B face.
BS1088
British Standard still used to determine the
specification of Marine Plywood.
BS5268
A design standard used by architects
to determine what products to use
in construction. It is not a method of
manufacture. Plywood details include strength
tables testing products in situ.
CC face
Allows various defects (eg splits) but generally
accepted in the UK that most defects will be
filled and board will be sanded.
CCX
Upgrade of CDX using a C grade on face and
on the back of the panel.
CDX
Originally the grade of softwood plywood from
North America with a type 1 glue line. Now
adopted by other manufacturers who still
produce C faces and a D face on the reverse,
the glue line is now usually in accordance
with EN314. C allows for shallow open knots
on the face.
CE 2+
This is stating that the manufacturer has
adhered to all the necessary tests required
within the CPR. The 2+ indicates that a third
party has initially tested the manufacturer’s
product performance and has then monitored
the factory’s controls to ensure continuity of
product performance.
CE4
This is a non structural performance test that
doesn’t need third party monitoring.
Class 0
Term used to describe Fire Retardent panels
in accordance with BS476 part 6 :- For areas
where limited combustibility is required,
usually in high risk places such as escape
routes. This will be superseded in new
European standards by Euro class B.
Class 1
Term used to describe Fire Retardant panels
in accordance with BS476 part 6 :- Surface
spread of flame. This will be superseded in
new European standards by Euro class C.
Combi
A term used when the plywood is a mixture of
hardwood and softwood.
CPR
Construction Products Regulation, effective in
all European countries. Dictates requirements
for products to be used in construction.
EN 13986
Wood-based panels for use in construction -
characteristics, evaluation of conformity and
marking. A harmonised European standard
that implements the CPR for wood panel
products. Lists all appropriate EN standards
needed for manufacturers to comply with CPR.
EN300
European standard describing requirements
for manufacture of chipboard. Standard refers
to seven different grades: P1 is standard
chipboard, P2 and P3 refer to furniture grades,
P4 is a flooring grade, P5 is a moisture
resistant flooring grade, P6 is heavy duty and
P7 is moisture resistant heavy duty.
EN 314
Test for bond quality (glue) for plywood. Three
classifications : EN314 / 1 /2 / 3. EN314/1
Dry conditions. EN314/2 Humid conditions.
EN314/3 Exterior conditions.
EN 636
Details requirements for different uses. There
are three service classes: EN 636/1 Dry
EN636/2 Humid, EN636/3 Fully exterior. The
vast majority of plywood will not comply with
EN636/3 unless it is treated or coated.
Eurocode 5
Will supersede BS 5268. Supplies architects
and specifiers the means to provide
compliance with CPR.
Hardwood Faced
Usually indicates that although the face and
back is hardwood, the core could be softwood.
PTS
Term used to upgrade the face of softwood ply
Plugged and Touch Sanded.
Q Mark
Set up by TRADA. The Q Mark is a strict
third party evaluation to ensure that the
manufacturing mill carry out all the necessary
procedures to ensure the plywood is structural
in accordance with EN 13986. This is
monitored on a continuous basis.
TG2 /TG4
An abbreviation used to indicate that the board
is tongued and grooved. Either on 2 long edges
or all 4 edges.
Throughout
Description qualifying that all the veneers
within the plywood are all hardwood or all
softwood.
WBP
Weather and Boil Proof. WBP is an endearing
term that is used by a large majority to
describe exterior plywood. Officially WBP was
a term used in BS6566 Part 8 determining
the grade of glue. This standard (BS 6566)
actually became obsolete in 1998 and is now
superseded by EN 314.
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www.travisperkins.co.uk
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