Wash. Rev. Code § 5.48.030
Whenever the record required by law, or any part thereof, of the proceedings or judgment or decree in any action or other proceeding of any court in this state in which the final judgment has been rendered, is lost or destroyed by fire or otherwise, and such loss cannot be supplied or replaced as provided in RCW 5.48.020, any person or party interested therein may make a written application to the court to which said record belongs, setting forth the substance of the record so lost or destroyed, which application shall be verified in the manner provided for the verification of pleadings in a civil action, and thereupon summons shall issue and actual service, or service by publication, shall be made upon all persons interested in or affected by said original judgment or final entry in the manner provided by law for the commencement of civil actions, provided the parties may waive the issuing or service of summons and enter their appearance to such application; and upon the hearing of such application without further pleadings, if the court finds that such record has been lost or destroyed and that it is enabled by the evidence produced to find the substance or effect thereof material to the preservation of the rights of the parties thereto, it shall make an order allowing a record, which record shall recite the substance and effect of said lost or destroyed record, or part thereof, and the same shall thereupon be recorded in said court, and shall have the same effect as the original record would have if the same had not been lost or destroyed, so far as it concerns the rights of the parties so making the application, or persons or parties so served with summons, or entering their appearance, or persons claiming under them by a title acquired subsequently to the filing of the application.
RCW 5.48.030