When rolls of microfilm or sheets or microfiche get wet, their base and emulsion are in danger of separating. This is when the image separates from the plastic backing. Without proper water damage restoration, moisture can spread from wet film to dry film because of the resulting humidity, which could also lead to mold damage. The film has a high susceptibility to the effects of water and moisture, and getting them to a document recovery service in a timely manner is critical.