For fiberglass sections in your interior where there is a random texture effect, perhaps:
A. You have cut out portions to deck repair from underneath.
Solution: When you set up the fiberglass inlay - take painters plastic and bundle it up in your hand to make a mess of it - then pull it back out and lay on top - tape it in place then run a roller over it. It will stick to the wet
epoxy. After said drying time of
epoxy - pull off and you will have that textured look -
epoxy will not bond to it. The more the plastic is crumpled - the greater the effect.
B. You have sanded down portions of the interior and lost the texture. Use technique in A. with exception - give it only 5-10 minutes as
paint will stick to it - and pull it down. If it is a fast drying
paint - then bundle up the plastic in your hand and dab the areas as you
paint.