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When it comes to construction works, trees are often in the way. Many developers choose a site for new construction because of trees, as they add aesthetic value and boost the environment in many ways. 

Unfortunately, this means that when the process of construction begins, trees in question are at risk. It takes planning and cares to preserve them on the building sites. Consulting with an arborist then becomes a necessity as does actively working with the builders to minimise the risk. There are certain things you can do to protect trees during construction: 

• Planning and organisation - early planning is crucial for the wellbeing of trees during the construction process and especially in the early phases of it. During this step, arborists and builders need to cooperate, to consider the trees present in the area. Sometimes it takes minor changes in the driveway design or the placement of the house that can preserve trees. If there is no way to re-route utility lines, perhaps a change of technique can be employed? For example, tunnelling and trenching installations are two techniques that are tree-friendly. 

• Limiting access with barriers - an effective way to prevent damage to trees is to erect barriers around them. This enables physical protection from machinery and the construction process. Some sturdy fences around each tree can keep harm away. Consider the spacing to be as far out from the trunk. Another thing that can help is to limit access to the construction site from a single entry point. Instruct all contractors where they are allowed to park and drive vehicles. This will limit compaction and soil damage. 

• Communicate at all times - when it comes to preserving trees, it is a good thing to always communicate your objectives with the arborist, builder and all subcontractors involved in the building process. When you visit the site and you always warn people about tree risks, you will present yourself as vigilant and that will pay off. After all, trees are worth the effort. 

What can you do in case of damage during construction? 

Construction damage may affect the stability and structure of a tree. It is the job of an arborist to inspect potential risks. An inspection involves both visual examination and instruments that reveal the presence of decay. If there are risks identified, the arborist will recommend the removal of limbs and prune the tree. They may also install cables and braces that serve to increase structural support. 

In case there is a need to treat the crown and trunk: 

• Pruning is a good option - broken and split branches should always be removed. In addition, any dead limbs from the crown must go. If these take place, it is a good idea to postpone crown raising and other maintenance pruning.

• Bracing and cabling - braces and cables offer additional support. Installing them is a matter of a professional arborist doing the work and assessment beforehand. Any cables and braces require regular inspection. Bear in mind that not all limbs are good candidates for such measures. 

• Drainage and irrigation - it is essential to follow up construction damage with proper watering of the root zone. Now, don’t go overboard with excessive watering, as that can also be harmful to trees. 

• Mulching - adding a few inches of organic mulch around trees will enhance root growth. This can speed up recovery from construction damage. 

Now that you know better how to prevent construction damage, or address it after it has occurred, you can better protect trees. 

© Treework Environmental Practice