Key Features of Our Moisture Mapping Service
Moisture mapping provides reliable insight into the condition of flat roof systems, helping reduce uncertainty when planning repairs or refurbishment.
Non-destructive testing
Surveys are carried out without damaging the roof covering. This allows large areas to be assessed while keeping disruption to a minimum and avoiding unnecessary opening-up works.
Large-area coverage
Moisture mapping is particularly effective on medium to large flat roofs, where isolated core samples alone may not accurately represent overall condition. The survey highlights moisture patterns across the roof, not just at single points.
Reliable, data-led results
Findings are based on measured readings rather than assumptions. This helps distinguish between dry, marginal, and moisture-affected areas within the roof system.
Refurbishment planning
Survey results can be used to determine whether localised repairs, partial refurbishment, or full replacement is the most appropriate course of action, reducing the risk of over-specification or unexpected issues on site.
How the Moisture Mapping Process Works
Moisture mapping follows a structured survey process designed to assess roof condition while minimising disruption accurately. Each stage of the survey is carried out methodically to ensure results can be interpreted reliably and used to support informed technical decisions.
Pre-survey review
The roof construction, build-up, and recent weather conditions are reviewed to confirm that moisture mapping is appropriate and that results can be interpreted accurately.
On-site moisture scanning
Specialist equipment is used to systematically scan the roof surface. Readings are taken across the roof area to identify variations that may indicate retained moisture within the roof system.
Data analysis and interpretation
The collected data is assessed to identify moisture patterns and areas of concern. Results are interpreted by experienced professionals, taking roof type and construction into account.
Targeted confirmation where required
If necessary, limited core samples may be recommended to confirm findings in specific locations, reducing the need for widespread intrusive investigation.
Reporting and next steps
A written report is provided outlining the findings, explaining their significance, and supporting informed decisions on repair, refurbishment, or further investigation.
Frequently Asked Questions
Below are answers to frequently asked questions about moisture mapping surveys. With extensive experience in roof diagnostics and flat roof refurbishment, we focus on providing clear, reliable information to support informed decision-making. If you require further clarification, please contact our team.
Moisture mapping is typically used when a flat roof is leaking, showing signs of failure, or being considered for refurbishment. It is also useful during condition surveys to inform long-term maintenance planning.
Moisture mapping is a non-destructive method. In some cases, limited core samples may be recommended afterwards to confirm findings, but these are targeted rather than widespread.
It is suitable for many common flat roofing systems, including those that have insulation layers. The roof construction and materials are checked in advance to confirm their suitability.
Moisture mapping provides reliable indicators of moisture presence and distribution. Results are most effective when interpreted by experienced professionals and, where necessary, supported by targeted intrusive checks.
Moisture mapping and core sampling are complementary. Moisture mapping helps reduce the number of cores needed by identifying where they are most useful.
Surveys are typically carried out externally and can often be completed while the building remains in normal use.
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Need some help?
Whether you are assessing an existing roof or planning remedial works, get in touch with our roofing team to discuss your requirements and the most suitable next steps for your building.
