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Works of art on paper should be glazed with either
UV-filtering glass or plexiglass to preserve the color and prevent
degradation of the materials. The most susceptible media to UV fading are
watercolor, gouache, egg tempra, and photographic emulsions. Printing inks
and pastels will also fade, though not as rapidly. Because of the static
property of plexi, only glass should be used on pastels to prevent loss of
medium. |
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The artwork must be spaced away from the glazing, either
through the use of a window mat or spacers. This prevents any condensation
or moisture, which might accumulate on the inside of the glazing, from
damaging the artwork or possibly adhering it to the glazing. |
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The artwork must be protected from the acid of the frame.
This can be accomplished either by using a window mat with sufficient
margins beyond the perimeters of the paper, or by lining the frame rabbet
with a mylar/aluminum sealing film. There should be sufficient room in the
rabbet to allow the paper to naturally expand and contract, preventing
buckling. |
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All matting and mounting board which comes in contact with
the artwork must be either 100% cotton, which we recommend, or an
acid-free alphacellulose. Photographs should only be matted with
non-buffered matboard, as buffering agents could break down photo
emulsions. |
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The artwork should be attached to the mounting board in
one of two primary manners. |
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Acid-free kozo paper hinges can be attached at the top on
the back of the artwork with wheat starch paste. Cross hinges attach the
hinged artwork to the mounting board. |
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Mylar corners can hold the artwork to the mounting board.
To prevent buckling, we recommend leaving the upper right corner free to
allow the artwork to expand and contract with climate changes. |
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Depending on the condition of the artwork, other, more
complex, mounts may be recommended by a paper conservator. |
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A supportive acid-free backing board protects the back of
the artwork. We recommend coroplast, as it does not off-gas. |
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A final kraft paper dustcover attached to the back of the
frame keeps insects from infesting the matting and artwork. Insect larva
and byproducts are highly acidic and can eat into the host paper of the
art. |
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The hanging system should be sufficient to bear the weight
of the entire framed piece. |
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On the kraft paper backing, materials used in the art
package, i.e. UV glazing materials; 100% cotton matting and backing; etc.,
should be noted. Old labels should be encapsulated in mylar. |