The GAF estimating tool is based on GAF documentation, supplemented by significant feedback from the GAF CARE team. We believe that the tool can help contractors quickly estimate TPO roofing systems with a reasonable degree of accuracy. However, we strongly encourage you to check the tool against your own internal estimates, particularly on larger jobs or on jobs where unusual situations (eg, unique roof geometry, non-standard combinations of materials) may be present. You can also verify the accuracy of the estimate by contacting your GAF Territory Manager.
According to Knowify's Terms of Service, neither Knowify nor its partners offer any warranty or are ultimately liable for any errors or omissions that may arise in the course of using Knowify's services, including without limitation the GAF estimating tool. We encourage you to review the Terms of Service for further details.