Originally posted by MinnFlyer
The only con to using MK on top of MK is keeping the bubbles out. What I do is to place the trim in place and trace it with a pencil, or outline it with tape, then remove the trim piece and poke about 3 bazillion holes where the trim is going to be. That will allow the air and gasses to escape underneith. Keep your holes 1/8 - 1/4" from the edges.
I've spent alot of time pondering this but poking holes in mk is down right scary. Does this work where the mk is over sheeting over framing? I bought some mk solvent think about trimming with it but when you lay it down you better have it where you want it!