This amazing stone lithograph of Firefly (1937) had unfortunately been backed poorly and I was asked to re-back it the proper way…
This poster had been Kraft paper backed, it was a process that was commonly done a long time ago. This was generally done to help keep the poster together so the the picture theatre and/or distributor could get more use out of them.
I prefer to do a hard surface demount if the paper is to fragile as was the case with this poster. Water with mild soap solution for cleaning and smooth lift of paper.
Generally something like this could take and hour up to several hours.
After that the poster was carefully submerged in a bath for cleaning and Buffer with Calcium Carbonate and then re backed (line backed).
And here is the completed project:
The Firefly (1937) – US One Sheet
Restoration that included de-mounting, washing, and linen backing.