Man at B&Q wrote:
On Mar 17, 2:09 pm, F wrote:
I need to fix some extruded polystyrene insulating board to a plywood
loft hatch.

Anyone able to suggest an adhesive that will fix two layers of the
polystyrene together and then the two layers to the plywood?


PVA


Any solvent free "No More Nails" type stuff will stick it firm.

HTH

Steve