What is a PiCUS Test?

PiCUS testing is a non-invasive method of determining the extent of decay in trees The PiCUS Sonic Tomograph is an instrument that can detect decay in trees by taking readings of the velocity of soundwaves through the stem from several sensors, installed with small nails around the trunk, which are each struck to pass sound through the trunk. These readings are used to create a tomogram, which shows the consistency of the wood within the tree and identifies areas of decay.  MB Trees use the PICUS 2 Sonic Tomography System for our tests.

Do I need a PiCUS Test?

Understanding the residual wood that is left and the extent of the decay within a tree stem will help with the right recommendations for any necessary tree works to the tree for its retention or removal. This evidence is often used in situations for council applications for any tree constraints such as Tree Preservation Order trees that are legally protected.

Further investigation using a Resistograph – Needle drill that measures the resistance of wood when drilling into it, which will give evidence of how strong the remaining wood maybe in a decayed tree.

It is important to understand that a hollow tree can still be a healthy tree worth retaining, both these tests will aid in a decision and reassurance that the tree still has suitable remaining wood for its preservation.