# Roof waterproofing handover: which records and tests to request Build a useful roof waterproofing handover file with system identification, inspection coverage, suitable testing records and clear outstanding items. Bunyady · 2026-10-15 A newly finished roof may look uniform without showing what happened beneath its final layer. Handover therefore needs more than a wide photograph and a warranty card. Ask for evidence that connects the specified waterproofing system to the installed work, describes the professional checks performed and identifies remaining limitations. The file should help a future inspector understand this particular roof, including its drains, equipment interfaces and any areas that were covered before the final visit. ## Identify the installed system Request the actual product names and the agreed build-up, together with recorded substitutions. Compare these with the accepted quotation and any written technical approvals. Delivery photographs alone do not establish where a product was used, so connect them to the installation record. Keep manufacturer documents for the installed version rather than a generic sales brochure. Product-specific references matter because acceptance questions must match the selected system; a report for another roof material is not automatically relevant to this one. ## Read the inspection coverage An inspection report should tell you which roof areas and stages were examined. Ask whether the inspector saw preparation, critical junctions and completed work, or only the final accessible surface. If parts were concealed before attendance, request the earlier records and have the inspector explain what can and cannot be concluded from them. A phrase such as satisfactory roof is difficult to use later unless the report identifies the location, date, scope and outstanding observations behind that conclusion. ## Agree a suitable test through the specialist Ask the responsible professional which inspection or testing approach is appropriate for the installed system and the building, and what it is intended to demonstrate. Request its written procedure and acceptance criteria before execution. Do not select a water depth, duration or improvised flood test from a social-media clip. The professional must address roof suitability, drainage, access and protection of occupied areas. A test record should describe the method actually used and its limits, rather than promise that every possible future leak has been eliminated. ## Track details and repairs individually Give drains, penetrations, perimeter junctions and repaired areas recognizable identifiers in the handover file. Where a defect was reported, retain both the original observation and the closure evidence. A photograph of a finished patch should link to the inspected location and the follow-up decision. In a hypothetical project, three drain details are corrected after the first inspection; listing all three separately makes it clear whether each was revisited, instead of closing the entire roof with one general completion message. ## Separate acceptance from unresolved matters Prepare a short outstanding-items register showing the item, responsible party and planned resolution. Ask the supervising professional which matters prevent acceptance and which can be handled through an agreed later action. Keep that judgment written. Do not erase a limitation because the contractor has finished mobilizing, and do not describe untested areas as tested. If a further trade is still due on the roof, record how its intervention affects final inspection and responsibility for any disturbed waterproofing. ## Make the file useful after handover Collect warranties, maintenance instructions, product information, inspection reports and a roof layout in one accessible folder. Add the service contact and the information needed when reporting a concern. Ask for a walkthrough of permitted access arrangements and the process for future equipment work. The owner should be able to identify a location and send the relevant detail without reconstructing the project from scattered messages. Keep the final file with the property records when maintenance responsibility changes. ## Your practical checklist 1. Match installed products to the approved scope. 2. Record inspection stages and inaccessible locations. 3. Keep the professional test procedure and results. 4. Link each repair to closure evidence and maintenance records. ## Frequently asked questions ### Is a flood test required for every roof? The appropriate method depends on the roof and installed system. Have the responsible qualified professional specify suitable checks and safeguards; do not treat one online procedure as universal. ### Does a warranty replace an inspection report? They serve different purposes. The inspection records observed work and limitations, while the warranty states the issuer's covered obligations and conditions. Obtain both where included in the contract. ### What if the roof was covered before inspection? Ask for the earlier stage records and a professional assessment of the evidence gap. Additional investigation may be proposed; a final photograph alone should not be presented as direct inspection of hidden work. ## Sources and further reading - [Sika GCC: Sikalastic-851 R](https://gcc.sika.com/en/construction/roofing/liquid-applied-membrane/sikalastic-851-r.html): Reference for professional review. [Journal](https://bunyady.com/blog/) · [Request a quote](https://bunyady.com/#requestaquote) [English](https://bunyady.com/blog/roof-waterproofing-handover-evidence/) | [العربية](https://bunyady.com/ar/blog/roof-waterproofing-handover-evidence/)