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Huge wall graphic lifting at bottom edge in office. Help?
We fitted a 1.5×8.5m print to a wall (1 piece) that was a matt emulsion finish.
To counter this it was first prepared with a PVA solution to turn it glossy.
Installation was fine – adhesion was acceptable.
After a week the BOTTOM edge detached – doesn’t make any sense. Top & sides remain quite firmly stuck.
It’s in a office environment so nothing weird going on and it wasn’t stretched into place.
Obviously there’s an adhesion issue. As a fix, would a spraymount adhesive work on the lifted area.
Thoughts?
Dave
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8 Replies
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We’ve used the carpet spray adhesive in the past. What material did you print it on?
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i always prep it with Zinsser Bullseye 123
Spraymount should fix it though -
quote Iain Pearson:i always prep it with Zinsser Bullseye 123
Spraymount should fix it thoughSounds ideal – think I’ll lift back the lower area. Coat wall with that & if necessary use a permanent spray adhesive.
Material is MD3. We’ve done quite a few wall graphics in it applied to satin or gloss finish paints. This was the first I’ve coated a matt emulsion wall with PVA…I’ve coated raw MDF with it before and it was fine. Maybe a combination of lower adhesion and surface texture.
Jon, all the carpet adhesive I’ve ever used, whilst being very sticky comes out like silly-string and not a mist. Used it on multiple occasions for fixing external (rough ‘n’ ready) vinyls that have been peeled off but it’s not any good for an office wall.
Thanks
Dave -
David,
There is a 3M spraymount adhesive aerosol which sprays with quite a fine spray, not the spray string that the carpet fitters use. I haven’t bought it for a good while but it is a very good product if you can find it.
Steve
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I second that Steve, it is called 3M 77.
Here in NZ you can buy it in any stationery shop, and many of the vinyl suppliers have it.
Probably the same in UK.
Simon -
Tried some of the bullseye 123 on one of our walls. Easily twice as grippy as PVA for applying vinyl to.
Give that a whirl first.
Thanks -
ACH! Bugger!
Total failure….just wrote the job off.
PVA sticks to emulsion.
The zinsser 123 really sticks to emulsion.Vinyl sticks to both.
BUT
zinsser doesn’t stick to PVA…and therein is the issue. Primed the affected areas to try to improve the adhesion, let it dry and stuck the vinyl back down…sweet.
Went to push out a bubble and oops…the primer peels straight off the PVA like a skin…stuck beautifully to the vinyl leaving perfectly clean PVA on the wall.Sucks eh!
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I’ve done a couple of walls using the textile self adhesive recently. ImagePerfect product with permanent adhesive and it goes on much better than vinyl with lam which always seems to be problematic if the wall surface isn’t ideal.
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