Start with the decision the survey must support
“Can this roof be coated?” is too broad to be answered by a photograph of the surface. Separate the condition of the roof assembly from the suitability of the proposed coating. The moisture assessment informs the first question; compatibility and adhesion work address different parts of the decision.
Tell the assessor whether the building has recurring leaks, previous patching, unexplained staining or incomplete roof records. Identify the affected interior rooms and the approximate times of the observations. Keep those notes separate from any conclusion about where water entered.
This owner checklist helps you commission and read an assessment. It does not provide a survey method, a do-it-yourself test or a diagnosis of a particular roof.
Ask what was measured and what remains uncertain
A useful report names the method, reviewed roof areas, conditions during the assessment and its limitations. Ask the reviewer to explain what a suspect indication means and what additional checks support the interpretation. Do not treat a colored image or a single reading as self-explanatory proof.
GAF’s liquid-applied roofing manual includes moisture assessment in its substrate-preparation guidance. Use the manufacturer’s current requirements and the assessor’s documented findings for the specific system being proposed.
- Which roof assembly and roof areas were evaluated?
- Where are suspect conditions marked on the roof plan?
- How were those indications investigated or confirmed?
- Which areas could not be reviewed, and why?
- What follow-up would change the proposed repair or restoration decision?
Make the roof plan and interior observations agree
Assign a name to each roof section and use the same names in photographs, inspection notes and proposals. For a multi-tenant building, mark which interior areas sit below each section. This lets your facilities team compare a report with observations without guessing which photograph belongs to which part of the property.
In an illustrative warehouse example, an interior stain is reported near a loading zone, while a roof report uses only photo numbers. Adding the roof-area names and the interior location makes the record usable. It still does not establish that the entry point sits directly above the stain.
Use the inspection preparation guide to collect available drawings, warranty documents and earlier repairs before the assessment.
Translate the findings into a written scope
For every suspect area, record the proposed action, supporting evidence and unresolved question. Ask which materials will remain, which will be removed or repaired, and how the work will be checked. If the assessment cannot settle a condition, the proposal should explain the next investigation step and how a changed scope will be approved.
| Finding | Scope question |
|---|---|
| Suspect area identified | What confirmation or additional review is needed? |
| Condition confirmed | What repair or removal is proposed and where? |
| Area not reviewed | How does that limitation affect the decision? |
| Restoration proposed | What evidence supports the materials left in place? |
Keep moisture investigation separate from adhesion testing. Evidence that a coating bonds to a prepared surface does not answer every question about material beneath it.
Retain the report and confirm the next assessment
Save the dated roof plan, method description, photographs, findings and limitations with the building’s maintenance file. Give that record to later contractors so repair work and equipment changes can be compared with the earlier condition map.
If the proposal changes from coating to repair or replacement, ask for the evidence behind the change. Use the restoration-versus-replacement questions to compare the options on the same documented conditions.
Request a roof review with the property city, roof history and observed concerns. Keep personnel off restricted roof areas and use qualified people for site assessment. The inquiry starts a conversation; it does not diagnose the assembly or confirm project availability.
This is planning information, not a site assessment or installation procedure. Use current product documents, qualified personnel and site-specific requirements for a project decision.