Plywood standards EN636 and EN314

I've been doing a little research into plywood standards after checking out the labeling on mine....EN636-3. There doesn't seem to be any posts on this and it all looks quite simple what to look for. Basically EN636 is to do with the timber species and EN314 is to do with the bonding glue in the manufacturing. Here's an excerpt from what I've found online:


Recently, there have been some fundamental changes in the terminology used
when specifying Plywood. There are two standards, one looks specifically at the
wood species and one at the glue line as to how the Plywood performs, the two
should be considered together.


WOOD SPECIES
In terms of the use of Plywood products in the construction sector, the uniform
standard for wood based panels, EN 13986, requires that Plywood species must
comply with one of the three performance classes within EN 636, and we as a
supplier must provide evidence to substantiate such.
The three classes; EN 636-1, EN 636-2, EN 636-3, are based upon moisture
resistance as follows:
• Class 1 : Plywood will not break up in interior conditions = moisture content corresponding to environmental conditions of 20°C and 65% relative humidity.
End use: warm roofs, intermediate floors, timber frame internal and partition walls
• Class 2 : Plywood will not break up in humid conditions or if to be used
externally. Plywood should be treated or covered = moisture content corresponding to environmental conditions of 20°C and 85% relative humidity.
End use: cold roofs, ground floors and timber frame external walls
• Class 3 : Plywood will not break up in exterior weather conditions = moisture contact will frequently be above 20% MC
End use: fully exposed service conditions

BONDING / GLUE
Changes to the bond quality classifications of Plywood have also been altered.
Bonding quality is now divided into three classes also, according to EN 314-1,
EN 314-2, EN 314-3, based upon moisture resistance as follows:
• Class 1 : Dry Conditions with a moisture content corresponding to environmental conditions of 20°C and 65% relative humidity.
Appropriate for normal interior climate.
Replacing MR Plywood
• Class 2 : Humid Conditions with a moisture content corresponding to environmental conditions of 20°C and 85% relative humidity.
Appropriate for protected external applications, it is capable of
resisting weather exposure for short periods of time. Also suitable for inte
rior situations where moisture condition raised above the class 1 level.
Replacing Type 1
• Class 3 : Exterior Conditions where the moisture contact will frequently be above 20%
Capable of withstanding exposure to weathering conditions and liquid
water over sustained periods of time.
Replacing WBP (Weather and Boil Proof)

 

What I've found over the last few months is ply can be sound when dry and then delaminate as soon as any moisture ( feather/adhesive ) touches it. Anything marked WBP is highly likely to be nasty. I've been using a minimum of EN 636-2 and 314-2 and haven't had any problems.

 

Will look into that. Would someone be kind enough to message me and idea of the prices for 6 and 9mm please?

 

Hello I am Gary Scott of Hanson Plywood and we are looking to set up a network of distribution of SP101 for Scotland so can you please advise me your local supplier of plywood and I can perhaps speak to them.

In the meantime if you can let me know what quantities you are looking for we can give you pricing and delivery date.
Our office number is 01422 330444

 

excellant news!
Glad to see more suppliers giving a damn about this trade