What do we do?

We offer all of our services to home and building owners, roofing contractors, maintenance companies, after care and directly to principle contractors.

Whether you have an ongoing leak, need to test a completed roof, or need to establish who is at fault with a leak, we can help you.

Simply get in touch with us via the contact us tab, or by calling and we can provide you with a free quotation for a survey.

There are various way that we are able to identify the location of defects on a roof's surface, but the main methods are by conducting an electronic integrity test, more commonly known as an ELD test. (Electronic Leak Detection)

There are two types of ELD test available, and these are known as the 'wet' and 'dry' methods.

The wet test

This method is performed during rainfall, or by hosing down the roof surface. We run a trace wire around the perimeter of the roof, or the area to be tested which creates a barrier, or a ringed circuit. The wire is then connected to a generator, which is also connected to a suitable substrate to ensure a good earth connection is made. The generator delivers a stabilised low frequency pulse across the area, which allows our technician to work across the roof surface using the detector and electrode probes. If water has entered the roof within the tested area, a current will flow from this point directing the technician towards it, allowing us to pinpoint the exact location of the leak. 

The dry test

In order for this method to work correctly, the roof surface must be completely dry on moisture and ponded water. Prior to starting the visual inspection, our technician will remove all water from the roof, including drying of the laps as this can interfere with the test. A suitable point is located for us to attached the earth cable to. Depending upon the thickness of the membrane, the output voltage of the generator is then set according to this. It is essential that this is done correctly as too much can damage the membrane. The electrode brush is attached to the handle which is connected to the generator. The technician slowly walks up and down the roof, ensuring the entire surface is tested. An audible alarm goes off when any defect is located, and sometimes these are too small for the eye to see.

Although both of these methods are highly accurate, they will not work on GRP or EPDM coverings. In these instances, a more traditional method, such as flood testing, or a dye test will be applied to ensure that we locate the source of ingress.

Thermo Graphic surveys

This type of survey is perfect for roofs which are heavily ballasted. This is a much quicker, cheaper and easier way to locate the source of ingress, rather than having to clear the roof. 

As with all of our investigations, a thorough report is provided which highlights all issues in detail.