01
Retain the decision trail
Keep the original condition assessment, approved scope, material selection, significant discoveries, and agreed changes. Include progress photographs of details later concealed by the roofing. Label them by date and roof location. Where an original feature was reconstructed from incomplete evidence, preserve the explanation so future teams understand the basis for the work.
02
Make the archive accessible
Create a short index linking roof zones to the supporting documents. Store material samples and spare stock with their own inventories rather than assuming photographs can identify everything. Provide the owner with a durable copy and a clear location for the records. The archive should help a later repairer preserve the completed work and avoid repeating investigations already carried out.