Barrier materials used in framing

Emily Gilbert <emily_gilbert [at] hotmail__com>

>I am currently researching materials used as a barrier between the
>back of a mount and the backboard of a frame (usually oil tempered
>hardboard). I am currently looking at the effects of using melinex,
>aluminium foil, 'marvelseal' and 'moistop'

Have you considered a thin "corrugated" polypropylene sheet 
(coroplast)? I've seen it used in frames, and I believe the 
polypropylene is as stable as any of the plastic barrier films you 
mention. (someone correct me, please!)

I've often found that people will use materials whose specifications 
or design are far beyond the minimums needed for the job at hand. 
Sort of like buying a tank to carry the kids to school.

Jerry Shiner
Keepsafe Systems & Forever Yours Bridal Gown Preservation


                                  ***
                  Conservation DistList Instance 13:35
                 Distributed: Friday, December 17, 1999
                       Message Id: cdl-13-35-007
                                  ***