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A Ground Penetrating Radar (GPR) survey is the ideal method for chimney flue location and mapping surveys in buildings.
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After the GPR data processing is complete, a drawing will be compiled in CAD showing a map of the chimney flues on a cross section or floor plan of the building. All our projects are subject to a final quality control and then the results will be issued.
On some occasions, we are asked to mark the locations of the chimney flues directly on the walls. This is not as ideal as a traditional chimney flue survey with post processing because it is necessary to rely on on-site information without the use of advanced processing techniques, but it is sometimes necessary to provide immediate guidance as to where the flues are located (for example immediately prior to other invasive works).
In this case our deliverable will be the marks showing the chimney flue locations on the wall. On-site mark out is a useful type of survey, but we recommend the production of a drawing where possible.
In properties with a fireplace, a chimney flue will be built into the chimney breast, this allows the gasses to escape vertically through the roof. If a property has multiple fireplaces, such as those of the Victorian and Edwardian era, then multiple flues may be built into the walls: providing an individual pathway from each fireplace to the chimney stack on the roof. The chimney stack is the name given to the row of chimney pots above the roofline, and there should typically be one chimney flue and chimney pot for each fireplace.
A GPR chimney flue location survey will allow you to trace the pathway of each flue from fireplace to stack.
