Well, yeah! You have to fill in the holes! I was talking about scratches and grain...that it covers without problems. I get rid of all the visible PL I can before putting on the Duratex. Insides of joints that show I put bondo or wood filler down on and run a finger along it as though it were calking before painting. With sanding it makes a nice smooth joint, and I've had no problem with Duratex sticking to it. I am using a roller, a sponge and "low" build. Even so, no problems so far.DaveK wrote: I didn't have the same luck. I found that I need to fill EVERY brad hole, etc., or they will show. Another troublesome area was the glue seam on butt joint corners. The PL air bubbles seem to suck the in Duratex and create a line. I run a putty knife loaded with Bondo over them and all is well.
In the interest of full disclosure... I also paint the entire inside of the DR horn mouth with $ .99 flat black spray paint before "duratexing" That way any place I have trouble reaching...or get the coat a little thin...does not show.