Giertsen, founded in 1918, offers property maintenance and support services for residential, commercial and industrial damages. Its services include water extraction, drying, dehumidification, plumbing, temporary lighting and heating. The company also provides a range of renovation services that include demolition, carpentry, roofing, plastering, painting, flooring, wall covering and drywall construction. Its additional services include electronic data recovery, mold remediation, carpet cleaning, dry cleaning, deodorization, asbestos abatement, warehouse storage, and crime scene and trauma cleaning. Giertsen s clients include schools, churches, government organizations and insurance companies. The company is affiliated to the National Institute of Disaster Restoration. Its office is located in Minneapolis.Fire Damage Restoration.