Digital print applied over wallpaper?!?

[MikePro]

Client doesn't want to remove existing wallpaper BUT wants me to print/apply some graphics to his interior wall.

recently applied a sample of some IJ180Cv3 over a wallpaper sample in my shop and a month later it was puckering at the edges... even with primer94!

any other suggestions on what I should look into? Wallpaper over wallpaper maybe? or kick it up a notch with concrete wallwrap material?

 

[MikePro]

eHow claims wallpaper over wallpaper is fine as long as the existing is porous. sounds legit considering I've overlapped seams in a few of my wallpaper projects and they have yet to curl-up at the edges.

still looking into potentially making a vinyl solution work for me. kinda miffed that, after masking-off a canvas and using primer 94 to prep before applying, cast vinyl was puckering at the edges. (base wallpaper material was printed wallscapes suede)

 

[smdgrfx]

I used the 3M concrete wrap with good results. Apply lots of heat!

 

[MikePro]

Apply lots of heat!

always do! at the very least it gives me that third look at every section i've applied to make sure there's no bubbles I missed. and everything i've applied that I had to remove was a PITA.... so i know I must be doing something right

i might just go with the concrete wrap material... got a bit here that's been sitting around for a while. may as well make use of it before it goes stale.