A coating needs a suitable surface and compatible preparation. An adhesion assessment can help evaluate whether the proposed system bonds as intended under the conditions tested. It does not establish the condition of every concealed roof layer.
What to do next
Ask what testing the manufacturer requires, where it will be performed, and how results will be documented. Have the proposal explain what happens if preparation or adhesion is inadequate. Testing should inform the scope before broad application begins.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.