Has anyone tried sealing the 'holes' at the cut end of a Correx sheet? Perhaps with glue from a glue gun? Sheets left out in the rain seem to wick water along the flutes and I'd like to try and avoid this if possible. Correx is a beast to try and get anything to stick to because of the finish they apply during production.

Loads of snowdrops out on my travels this morning ... not a bee to be seen though. Less than 5oC and raining

Thanks