Has anyone used Shieldz to prepare a wall for wall graphics?

Have used Shieldz but found that your process adequate in most situations - except we use 25/75 denatured alcohol/distilled water to work best. Sometimes use scotchbrite pad to roughen surface first then clean. It is remarkable the difference alcohol makes removing the film that surfaces on newer paints, but be sure to test in indiscrete area first. We use 3M 40c as our goto, but have used 35c for some tougher situations. I'm not sure the culprit is Low voc - seems to us to be the paints with 'dirt shed' or similar advertised characteristics. Best solution is to have dialogue with customer up-front about using conventional paints, apply on paint no newer than 30 days, and the broken but accurate record on this forum test-test-test.

 

Is Shieldz like Gardz? We used Gardz with great success recently. Our new policy is Gardz or high tack vinyl.

 

I've had cases where I have had to go over the wall three times before getting a good grip from the vinyl. Using denatured alcohol.