Laminated plywood

[Daydream believer]

I understand the principle but I have never seen significant warping of ply when this is ignored. perhaps with mdf or similar but not with ply. It is normally very stable and strong enough to resist warping. A sealing coat which should be applied anyway is surely enough to prevent even minor warping. Using expensive laminate to achieve this seems like overkill to me. I suppose if it is a very thin ply board it might be a problem.

I did a few thousand square metres when I had a joinery business & always used a press. If we needed to slide the formica into place we would use a quick drying PVA glue specially formulated for us by a local glue supplier in Grays( forget the name)
believe me you need to apply a balancing veneer. It need only be a cheap balancer -you do not need to use the same veneer as on the face. If the ply is not securely restrained it will distort
To get a good pressure put a sheet of ply & a bearer over the veneer & wedge it off the ceiling with some battens sprung in. Rafters of a shed are ok to push against but do not do it against the wife's kitchen ceiling unless you want a divorce

 

[sailorman]

I did a few thousand square metres when I had a joinery business & always used a press. If we needed to slide the formica into place we would use a quick drying PVA glue specially formulated for us by a local glue supplier in Grays( forget the name)
believe me you need to apply a balancing veneer. It need only be a cheap balancer -you do not need to use the same veneer as on the face. If the ply is not securely restrained it will distort
To get a good pressure put a sheet of ply & a bearer over the veneer & wedge it off the ceiling with some battens sprung in. Rafters of a shed are ok to push against but do not do it against the wife's kitchen ceiling unless you want a divorce

who was the big laminate supplier in south Essex, i used to use i cant remember 35 yrs back
Ipswich Plastics was the other we used