Keep origin and identity together
Ask where the tiles came from, when they were removed and whether several roofs or product runs have been mixed. Record available maker’s marks, profile names and dimensions. NPS describes identification through tile imprints and historic patterns. Provenance does not guarantee quality, but it helps explain variation and prevents unlike material from being mistaken for one consistent lot.
Assess more than the visible face
Have the roofing specialist examine representative pieces for cracks, missing edges, damaged hanging features and deterioration of the body. A photograph of the exposed surface cannot establish how well a tile will fit or remain serviceable. GSA permits matching salvage in good condition, subject to sample review; suitability should be established before counting every delivered piece as available material.
Compare the lot with the actual roof
Match the candidate’s form to existing tiles, including underside details and the visible exposure. Do not mix lots solely because their color is close. A historic tile’s dimensions or profile may differ from a later product with the same name. Retain a labeled sample from each source while the project team decides which pieces are compatible.
Count usable stock and special pieces separately
Distinguish material accepted for reuse from pieces held for evaluation, records or disposal. List pans, covers, field tiles and accessories separately where the roof uses different components. GSA calls for examining what can remain or be reinstalled. A count of mixed salvaged pieces is less useful than a count tied to the specific roles they can fill.
Preserve the identification during storage
Use labeled storage groups that maintain the relationship between source, profile and roof location. GSA recommends storing salvaged tiles on pallets off the ground and avoiding stacked pallets, with special shapes protected against unnecessary handling. Retain an inventory with the building records. Later repairs depend on being able to find the correct material, not merely knowing that spare tile exists.
Related questions
Further reading & technical sources
Consult the current product documentation and local requirements for your project. These introductions are not installation specifications.
Tile Roofing USA editorial guide · Published October 26, 2026.