Personally i would do it but you ve got to consider how your clear coat might effect the decal down the line.
Polyurethane over vinyl wrap.
Applied over a vinyl wrap ppf can provide an extra layer of protection for your graphics though most companies recommend using ppf as a bra on areas more susceptible to the most abuse.
Using ppf on the front bumper or the lower door panels will shield your wrap from chips and damage from gravel and other hazards of daily driving.
Been there done it.
For polyurethane you ll probably apply five to ten coats.
If leaving your boards natural wood brush or spray minwax polyurethane on the wood board tops let cure for 24 hours and then lightly sand with 400 grit sand paper.
Once this happens the wrap or sticker will begin to peel away.
Do i have to poly over vinyl decal.
When it shrinks and the hot sun reactivates the glue on the vinyl and the edges will start curling.
If your wrap begins to peel you can try applying additional coats of polycrylic to keep the vinyl down and protected but results can be mixed.
By lehua125 on sat jul 24 2010 1 52 am this is my first time building a set of boards i have stained the wood and coated with polyurethane.
Over time the varnish begins to wear away and the adhesive starts to go as well.
You can use frog juice or cover it with a sheet of clear vinyl.
The same thing seems to happen to every set.
Once you have your letters down and put clear varnish or the polyurethane over vinyl this material will shrink in hot weather.
Your playing with fire my friend.