Plywood delaminated

[Gavin77]

Morning

I have a 12mm WBP sheet of ply, which after cutting to size, I have noticed that it has started to delaminate at an edge. Upon closer inspection, it looks like there is an extra 'layer' at this point. Is this common, or is this a manufacturing defect?

Untitled

• Gavin77
• 11 Jun 2011
• 1

Untitled

• Gavin77
• 11 Jun 2011
• 1

 

[foxhole]

Sheet is malformed.

 

[big-all]

where the layers off ply are butted up against each other sometimes you get overlap sometimes you get gaps this is not unusual and can cause weak spots
i think you have been very unlucky
where you have cut is along the join line so causing more damage than normal

another part off the problem is modern ply can be 5.5mm rather than traditional 1/4" or 6.35mm thick with the reduced thickness being taken off the surface layers

 

[Gavin77]

OK thanks for the answers.

Next question. Is there anything I can do about it to make the surface flush again? ie sanding/filling. or am i wasting my time and should write it off?

 

[ladylola]

You could always try squirting pva into the gap and cramping it tight for the night, it may or may not work no guarentee either way. Failing that it's probably better to replace unless you could turn the ply around so the delamination is at the back.

 

[vindaloo]

You could always try squirting pva into the gap and cramping it tight for the night, it may or may not work no guarentee either way. Failing that it's probably better to replace unless you could turn the ply around so the delamination is at the back.

Seconded but if you need it more waterproof, try aliphatic resin rather than PVA. Also, it sets hard and can be sanded easily.