Independent Roof Integrity and Handover Testing
Confirm the waterproofing condition before completion or handover
New and refurbished roofs can look complete while small breaches remain hidden around fixings, penetrations, interfaces or areas visited by other trades. Southern Roof Diagnostics provides independent roof integrity testing and clear reporting for commercial projects across Southern England.
Testing before practical completion helps the project team identify and record defects while access is available and responsibility is easier to establish.
Who commissions this service?
- Developers and main contractors
- Roofing and waterproofing contractors
- Contract administrators and quantity surveyors
- Property and facilities managers
- Building owners and managing agents
- Clients installing solar panels, plant or other roof-mounted equipment
What can the inspection include?
The scope is tailored to the roof construction, waterproofing system and stage of the project. It may include:
- Review of drawings, roof plans and available system information
- Visual inspection of accessible roof areas and details
- Electronic integrity testing of compatible waterproofing membranes
- Marking and recording confirmed breach locations
- High-resolution photographs and annotated roof plans
- Clear separation of confirmed defects, observations and test limitations
- Retesting after repairs when separately instructed
- A concise report suitable for the project handover record
Learn about electronic leak detection
Why test before handover?
A documented integrity test gives the project team evidence of roof condition at a defined point in time. It can help reduce uncertainty, focus remedial work and create a useful benchmark before the building enters normal use.
This is especially valuable where the roof has been exposed to follow-on trades, temporary works, access equipment or the installation of plant and services.
Suitable stages for testing
Independent testing can be arranged:
- Before practical completion
- After other trades have finished working on the roof
- Before or after solar panel installation
- Following repairs or localised waterproofing works
- Before a warranty inspection or client handover
- When a new leak requires an evidence-led investigation
Clear, independent reporting
Southern Roof Diagnostics does not manufacture waterproofing products. Our role is to test, document and explain what the available evidence shows.
Where the construction or site conditions prevent a complete test, the limitation is recorded. Where repairs are completed, a return visit can verify the treated areas and update the project record.
Recent project example
On a recent commercial roof integrity test in Chichester, electronic testing identified 19 membrane breaches. Twelve were consistent with mechanical damage and seven were associated with areas of reduced resin coverage. No breaches were identified on the accessible garage roof areas tested.
Each location was marked, photographed and plotted so that targeted repairs could be completed and checked.
Read the Chichester case study
A typical handover testing process
- Scope review — We confirm the roof areas, construction, waterproofing system, access and reporting requirements.
- Site inspection — Accessible areas and key details are visually reviewed before testing begins.
- Integrity testing — The appropriate electronic method is used where the roof build-up and site conditions are suitable.
- Defect recording — Confirmed breach locations are marked, photographed and referenced on a plan.
- Report issue — You receive a clear record of the test, findings, limitations and recommended next steps.
- Retest if required — Repaired areas can be checked and the final record updated.
Frequently asked questions
Does every roof suit electronic testing?
No. Suitability depends on the membrane, substrate, roof build-up, surface condition and access. We review these factors before recommending a test method.
Is this the same as a warranty inspection?
No. It is an independent diagnostic test and report. It can support a handover or warranty process, but it does not replace the waterproofing manufacturer's own requirements.
Can you test after solar panels or plant have been installed?
Often, yes, although access and coverage may be restricted. Testing before installation usually provides the clearest baseline and reduces the risk of concealed areas being unavailable.
Arrange an independent roof handover test
Tell us about the project, roof system and programme. We will recommend a proportionate testing scope and reporting format.