As you say, there are two parts: one is the wooden deck adhered to a thin clear plastic shhet (which is peeled away to reveal the "sticky" surface of the wooden deck. Similarly there is a yellow sheet with a white lower surface whicj when peeled away reveals a "sticky" surface of the yellow sheet.
I assumed that this was a paint mask, although I don't really see why you need one unless the manufacturer believes that the wooden deck adheres better to the bare plastic than paint.
First purchase fronm this company and quite impressed.
Best of luck
ne that frequents this site ever used, or TRIED TO USE the wood decks from this company? I just got their wood deck for the 1/350 Exeter (because is has the wood deck for the raised deck below the bridge structure) but it comes with no instructions. It has a sheet of very thin wood (nicely done) with a shiny gloss coat underneath. A separate yellow/white sheet looks more like an Eduard paint mask as there is an adhesive on the yellow side. I'm stumped as was this Englishman a few years ago. See here: https://www.britmodeller.com/forums/index.php?/topic/235031430-shipyard-works-wooden-decks/
Here is their Facebook page:
Tried contacting them but to no avail. Would contact cement be a reliable alternative to a non self adhesive wood deck?