Tree Surveying Services

Our Surveying Team at Tag Trees is fully qualified to undertake the full range of necessary tree surveying inspections.

Initially a survey is conducted from ground level using the ‘Visual Tree Assessment’ method which is an inspection of the tree(s) and the surrounding site conditions.

This type of survey requires access all around the tree and uses a variety of tools including probes, binoculars and a sounding mallet to gain additional information about the tree and any potential defects.

From the data gathered, our surveyors compile a comprehensive report which contains photographs details of the trees’ structural condition; height, average crown spread, age class and species, identified risk levels and any recommendations concerning necessary works.

Any tree or group of trees found to have defects requiring work will be plotted on a map to identify their location and will be labelled to show their risk level. At this time, any tree that requires work will be sprayed with a colored dot – an ‘X’ spayed on the tree denotes that it will need to be felled, making it easily identifiable

Advanced survey assessments are performed to provide more detailed information about specific tree parts, defects, targets or site conditions. This type of assessment is usually conducted after the initial evaluation if the tree surveyor requires additional, more detailed information about the condition of a tree.

One of the techniques we employ is a non-invasive tool for assessing decay in trees – Sonic Tomography. It works on the principle that sound waves passing through decay move more slowly than waves moving through solid wood and from this we are able to create a two-dimensional image of the cross-section of a tree – creating a ‘tomograph’.

We are able to combine these images with other scans to provide a 3D representation of the structure of the tree and give us an understanding of the tree stem’s internal condition so that we are able to accurately recommend any required work.

Inspect all trees within the perimeter fencing and provide a written report.

The assessment is a visual inspection of a tree and the surrounding site, a synthesis of the information collected. It requires access all around a tree and involves using tools, such as probes, binoculars, and a sounding mallet, to gain additional information about the tree or its defects. Data is collected and assessed from ground level.

The report will include photographs, recommendations, and details about the trees’ structural condition, such as its height, average crown spread, age class, and species. The tree species will be listed in both Latin and their common name.

Tree(s), or groups of trees found to have defects and require work, will be plotted on a map. They will be labelled with a number, i.e., T001 / G001 (group), and coloured on the map as to their risk level. The tree will then be sprayed with a coloured dot: this denotes work is required. An “X” sprayed on the tree denotes that it will need to be felled, making it easily identifiable.

The surveying is based on the Visual Tree Assessment method and is undertaken from ground level only.

Ash Dieback is becoming more prevalent. Any ash trees showing signs of ash dieback will be noted and classified using four health classes. A recommendation will then be made.

Advanced assessments are performed to provide detailed information about specific tree parts, defects, targets, or site conditions. They are usually conducted after the initial evaluation if the tree assessor needs additional information.

A non-invasive tool for assessing decay in trees. It works on the principle that sound waves passing through decay move more slowly than sound waves traversing solid wood. A Sonic tomograph sends sound waves from a number of points around a tree trunk to the same number of receiving points. The relative speed of the sound can be calculated, and a two-dimensional image of the cross-section of the tree, a ‘tomograph’ can be generated. Using the differences in the transit times between each pair of sensors, the analysis software constructs a two-dimensional picture (acoustic tomograph), which shows zones of differing sound transmission properties within the stem. These results can be combined with other scans in a 3D representation to understand the stem’s internal condition better.