I need advice how to laminate flat sheet with fiberglass.

There are 3 sheets 25 mm honeycomb already joined so total size is 2.4m x 3.6m.

I am just in the process of covering whole surface with double glass canvas and epoxy but I am afraid that bubbles still
appear beside intensive rolling over with flat aluminum roller.

Should I cover whole surface with plastic sheet and vacuum it or apply something on top ?

I am afraid that bubbles could create the weak points later and cause spot de- lamination.

If too late save that one at least next time I will be better informed.