Tree Testing

 

Sonic Tomograph Testing… measures the speed that sound waves travel from one point to another through a tree trunk. Sound waves are constant in solid wood yet give a much slower reading through decaying wood. Computer images provide the Arborist with confirmation of health and stability of the tree.

Resistograph Testing… uses a 400mm+ long drill, which is micro-drilled on various points around the stem and major buttress flares. This indicates resistance through the cambium, trunk and even the roots. The measurement is recorded via a needle onto a paper readout and will indicate solid, healthy wood versus hollow and decayed wood, confirming safety or instability.

Airspade Decompaction Works… on London’s most noteable Zelkova (Japanese Elm) for Royal Parks, Bespoke assessment of the rooting zone may show difficult environments for respiration. Nutritional deficiency is often caused by a lack of organic materials breaking down in the rooting zone. Compaction and poor drainage will restrict the gaseous exchange, leading to compromised health, even mortality. Creation of an holistic rooting zone enables a tree to utilise their own survival strategies towards future good health. We also carry out vertimulching to assist aeration of the soil creating general efficient exchange of gases and moisture in the rooting zone.

Tree Fungal Colonisation… We provide identification of fungal colonisation. In many cases this can be a feature not a defect, as we now understand that trees and fungi, can potentially be associated together, for a considerable time, in some cases. The association can create unique bio diversity and environments. It is important to retain and encourage such scenarios. Other fungi may colonise weak, or damaged trees can result in structural compromises. Ask us if you have issues. See more on our Gallery Page.

 
 

Brace restraint installation for the famous Harry Potter Cedar of Lebanon located overlooking waters at Blenheim Palace in Oxfordshire in 2016. Read more about the project here in an article from ProArb: https://proarbmagazine.com/henley-tree-surgeon-saves-historic-350-year-old-cedar-tree/


Installation of Lightning Conductor in Wellingtonia (Sequoiadendron giganteum)

Installation of a Lightning Conductor in a Wellingtonia - the pinnacle at 32.0m rises out of the tree to attract any potential lightning strikes and guide them safely down to the earthing rods, avoiding any possible tree damage, and giving the owner peace of mind. The specialist 10mm copper wire is secured to the main stem with stainless steel, sprung loaded, tree-friendly fixings and rods are sited into the nearby earthing trench, running away from the main stem.


 

If only trees could talk…

However, a competent arboriculturist will glean much from the body language of a tree.


Veteran & Ancient Sweet Chestnuts (Castanea sativa)

 

Dappled sunlight under the old Sweet Chestnuts (Castanea sativa) - An assessment of individual Sweet Chestnut trees and coppice stools in the UK suggests that some may be between 500 and 1000 years old, based on girth and historical records. Old trees are usually hollow or have regrown from collapsed boughs. The Ancient Tree Inventory for the UK (Woodland Trust, 2016) lists over eleven hundred Sweet Chestnut trees of more than 6.0m girth, with the largest single tree being 19.8 m girth!

Here is the group resting in the still winter sunshine…


 

Privately owned Ancient Cedar with 8.0m girth undergoing an aerial climbing inspection by Heritage Tree Services Ltd, to ascertain a better understanding of the tree’s structure.

 
 
Climbing inspection of ancient Cedar with 8.0m diameter at breast height.