Question: what is the clear plastic that the foam gets wrapped with before the vinyl go on? Is that just to keep rain from leaking through the seams and into the foam?
Thank you . . . and to your question.
If you are talking about the clear plastic that I am using to make templates, that is one thing . . .but . . .
If you are asking about why a clear plastic is used in general between the vinyl and the foam that is another reason/explanation.
I am not using plastic between the vinyl and the foam cushion. The reason that some/many do is with tight fitting vinyl skins, it is hard to slide the skin over the foam. The plastic allows the vinyl to slide and be fitted properly.
The need to use plastic often depends on how the skin is attached and if the skin needs to 'slide' over the foam in order to get into the proper orientation, etc.