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Printed Vinyl on HDU?

Discussion in 'General Signmaking Topics' started by SignProPlus-Chip, Oct 4, 2012.

  1. SignProPlus-Chip

    SignProPlus-Chip Active Member

    Feb 19, 2012
    Bluffton, SC
    Is primer and paint enough to properly seal off the cells of HDU prior to vinyl application?

    I have seen a lot of signs where the edges of graphics pucker up in short time. I would think its due to moister being able to creep in between the vinyl and the texture of the HDU.

    I wanted to epoxy or resin coat the HDU first, then sand smooth, prime and paint to ensure a completely non-porous substrate.

    Good idea, or overkill?

    Any thoughts.
  2. visual800

    visual800 Very Active Member

    Aug 4, 2010
    montgomery, alabama
    if I had to do this I would rather mount print on aluminum and affix that to hdu...routed of course. Install with silicone
  3. signguy 55

    signguy 55 Member

    Sep 28, 2009
    I have applied vinyl lettering to raised areas of a blasted HDU sign. I just finished coated everything with bulletin enamel and applied the vinyl lettering as usual. I really sanded everything smooth before and after primng.

    I don't see why a digital print wouldn't work. There will be some texture of the HDU, but shouldn't be noticable.

    Did a sign where I used a black outline with gold leaf vinyl, just painted and applied the black vinyl. Worked great.
  4. Typestries

    Typestries Very Active Member

    Jan 8, 2007
    NJ | VT
    I like visuals idea.......

    Here's our experience....If you use a cast vinyl, and properly prep the HDU you should be fine. We produced a number of sets of letters on 1.5 HDU with digital faces that were spe'd to wrap around a round-over profile and onto the return.

    They had 4 coats of primer and 3 of one shot. They were for all purposes, super smooth. We printed cast vinyl, used cast lam, and applied after letting the paint really cure. Even a set 1 block from the beach is fine 4 years later.

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