Hi Rob, you don't say how old your van is or what the front is constructed of or where the bubbles are mostly located. If aluminium it could be rot coming from the rear of the panel.
Dave.
------------- Never argue with an idiot, they will drag you down to their level and beat you on experience.
Mark Twain.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets