I've got some large photos (about 60cm * 40 cm and had a problem mounting them on mdf.....
I first mounted them with 3m photo mount (spray) without realising this was a temp mounting product - they peeled off after a few days....!
The then reapplied 3m spraymount onto the mdf and re mounted the pics. This was more successful but about 5 months later and in this warmer weather bubbles are starting to appear.....
Is this because there was still some of the old photomount on the surface or is this common with spray mount.
I was wondering if a better product was available - of do I need to prepare the mdf first by applying a pva wash or similar.
Any thoughts? Thanks