sentences:  In some areas it can be difficult to locate installers that are experienced with cellulose.An experienced installer understands how to correctly dense-pack loose fill dry cellulose, how to best apply stabilized (partly wet) cellulose on sloped surfaces, and the proper time required for wet-spray cellulose to dry.As with other non-batt insulation, US city and regional/state building codes may not be updated for cellulose insulation.