Why is “acid free” matting important?
Some papers and boards may contain acids which can migrate to materials in contact with them and cause them to degrade, becoming yellow and brittle. For this reason, valuable works of art and documents on paper and cloth should be matted only with boards known to be acid free. Utrecht carries a full assortment of acid-free matte boards in a wide range of colors, as well as 100% rag museum boards.
