4100 Park Approach
LS10 8GB

Tel: +44 (0)113 320 8639
Main Contact: Luke Cole – Roofing Manager


GeoShield Roof Deck Waterproofing Integrity Testing

It is recognised that every roofing construction project is unique, whether it involves an existing structure or is brand new build, therefore every program of verification and integrity tests needs to be bespoke to fit each individual sites requirements & conditions. Prior to beginning any testing regime GeoShield will structure a pre-test meeting, involving all associated parties, where the choice & regularity of testing will be made. Methods of testing often chosen (though not limited to), include:

  • Non-Destructive Probe Inspection
  • Destructive Joint Testing
  • Non-Destructive Compressed Air Lance Testing
  • Twin-weld Sealed Channel Pressure Testing
  • Low Voltage Earth Leakage Testing
  • High Voltage Dielectric Porosity Testing
  • Differential Pressure Vacuum Testing
  • Non-Destructive Smoke Testing
  • Non-Destructive Inert Tracer Gas
  • Infra-red Thermal Imaging
  • Aerial Drone Surveys

Where a new building is to be insured under a Latent Defects Policy, Developers and Builders will also need to comply with the functional requirements of the Warranty Providers Technical Manual. The Warranty Functional Requirements are intended to minimise the risk of specified defects and damage to the building to be able to provide a Latent Defects Warranty cover. Companies such as LABC, Premier, NHBC and many others insist on 3rd party independent assessment of the waterproofing layer of green roofs, blue roofs & buried decks prior to the issuing of any cover.

GeoShield are members of both the Roofing and Waterproofing Test Association (RAWTA) and the Confederation of Roofing Contractors (CORC). The NHBC Standards advise that guidance can be sought on electronic test methods by visiting the RAWTA website (NHBC page 21 Chapter 7.1). GeoShield use the latest innovations by Buckleys UVRAL, the world leaders in flat roof electronic leak detection (ELD) apparatus on all our roof deck health surveys and assessments, to pinpoint the exact point of water ingress and track how the destructive water is penetrating through your existing waterproofing roof protection. Where ELD testing is deemed inappropriate non-destructive differential pressure vacuum testing will be employed. Comprehensive roof condition surveys are completed by the GeoShield Drone Survey team of pilots to provide an accurate plan of where your roof has been compromised, which can be further enhanced via thermal imaging technology.