Effect of humidity on Fosshape

I am trialling using Fosshape for a storage mount on an 18th century
hoop and a question has come up about how the material reacts to
fluctuations in humidity over time.  More specifically, does it
deform and become misshapen?

I know that the material, according to the manufacturer's website,
is mould and mildew resistant and "unlike buckram, Fosshape does not
fall apart ... in humid/rainy conditions."

Has anyone done any research on this before?

Charlotte Gamper
Historic Royal Palaces


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                  Conservation DistList Instance 27:23
                 Distributed: Sunday, December 1, 2013
                       Message Id: cdl-27-23-018
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