A Washington Roof Affidavit and Structural Inspection Request is a document used to certify that a roof meets certain standards for safety and structural integrity in Washington State. It is typically required for home sales, refinances, and when applying for certain roofing permits. There are three types of Washington Roof Affidavit and Structural Inspection Requests: Roof Certification, Surety Bond, and Roof Inspection. The Roof Certification is an affidavit signed by a licensed roof contractor that states that the roof was built to meet the building code standards in Washington State. The Surety Bond is a financial guarantee that the roof will meet the building code standards in Washington State. The Roof Inspection is a thorough inspection of the roofing system to ensure that it meets the building code standards in Washington State.