The purpose of the Roofing Knowledge Base is to give general guidance. Roof Works of Virginia Inc. accepts no responsibility or liability for any incorrect information in the knowledge base. This information should be used for guidance purposes only. Technical advice regarding specific questions or roofing needs should be sought via an on sight inspection by a trained roofing professional. Roof Works of Virginia Inc. does not collect customer information for disclosure to third parties. Copyright 2006 Roof Works of Virginia Inc. All rights reserved.