What You Need to Know About Tree Preservation During Construction

Jan 3

Construction projects often bring about a host of challenges for homeowners, builders, and landscapers. One critical yet frequently overlooked aspect is the preservation of trees on or near the construction site. Mature trees can add significant value to a property, enhance the environment, and provide shade and aesthetic appeal. However, construction activities, if not carefully managed, can cause irreparable damage to these trees. Here’s a guide on tree preservation during construction to ensure both your project and the trees thrive.

1. Why Tree Preservation Matters

Environmental Benefits: Trees play a crucial role in maintaining the ecosystem. They provide clean air, reduce urban heat islands, and prevent soil erosion.
Property Value: Well-preserved trees enhance a property’s curb appeal, contributing to its overall value. Trees that are damaged or removed could negatively impact the landscape’s aesthetic.
Safety and Stability: Trees that are structurally damaged by construction activities may pose safety risks in the future, such as falling branches or compromised roots.

2. Planning and Early Assessment

Tree Survey and Evaluation: Before any work begins, hire a certified arborist to assess the health and condition of the trees on the property. An arborist can identify which trees are viable for preservation and which ones are in poor condition or pose risks.
Tree Protection Plan: A professional arborist can also create a tree protection plan that includes measures to safeguard trees during construction. This plan will outline strategies such as fencing off the root zones or creating buffer zones around trees.
Site Design Considerations: When designing the layout of your construction project, take the existing trees into account. If possible, position the building and hardscapes in ways that minimize impact on trees’ root zones and canopies.

3. Understanding the Critical Root Zone (CRZ)

What is the Critical Root Zone? The CRZ is the area surrounding the tree’s trunk that contains the majority of the tree’s roots. This zone is essential for the tree's water and nutrient absorption. Disturbing the CRZ can damage the roots, potentially leading to the tree’s decline or death.
Protecting the CRZ: Avoid heavy equipment and construction activities within this zone. If construction must occur near the CRZ, you can use methods like air excavation or root pruning (done by an expert) to minimize root damage.

4. Protective Measures During Construction

Tree Protection Fencing: Install physical barriers, such as fencing, around the CRZ to keep construction vehicles and equipment from getting too close. The fencing should be sturdy enough to prevent accidental damage.
Avoiding Soil Compaction: Construction equipment and foot traffic can lead to soil compaction, which limits the tree’s access to oxygen and water. Use plywood or other materials to distribute weight if equipment must pass near trees.
Temporary Irrigation: During construction, trees may experience stress due to changes in soil structure or water availability. A temporary irrigation system may be necessary to ensure they continue to receive adequate water.

5. Avoiding Common Construction Threats

Root Damage: Excavating or digging near a tree’s root system can cause permanent harm. Only an experienced arborist should perform root pruning if it’s absolutely necessary.
Nutrient and Water Disruption: Construction can disrupt the natural flow of water and nutrients to the tree. To prevent this, ensure that drainage is properly managed and consider adding mulch around the tree’s base to retain moisture.
Air Pollution and Chemicals: Avoid storing or using chemicals like paints, oils, or construction solvents near trees. These substances can seep into the soil and damage the tree’s roots or leaves.

6. Managing Tree Canopy and Branches

Canopy Clearance: Large equipment can cause damage to tree branches or the canopy, which can affect the tree's overall health. Trimming branches that are too close to construction machinery may be necessary, but it’s best to consult with an arborist before doing so.
Pruning with Care: Proper pruning techniques should be used to remove any damaged or dangerous branches without harming the overall structure of the tree. Improper pruning can lead to stress or infection.

7. Monitoring During and After Construction

Ongoing Monitoring: Throughout the construction process, it’s important to monitor the condition of the trees. Look out for signs of stress, such as wilting, leaf drop, or branch dieback. Address any issues immediately to prevent further damage.
Post-Construction Care: After the construction is completed, continue to care for the trees by providing regular watering, mulching, and fertilizing. The construction zone may have changed the natural environment around the trees, so additional care is needed to help them recover.

8. Legal Considerations

Local Regulations: Before starting any construction project, check local regulations regarding tree preservation. Many cities and municipalities have tree protection ordinances that require permits for removing or damaging trees. Fines can apply for non-compliance.
Permits for Tree Removal: In some cases, tree removal may be necessary. However, there are often guidelines for how to handle tree removal legally, especially if the tree is of a certain size or species.

Conclusion

Tree preservation during construction requires thoughtful planning, professional advice, and proactive management. By considering the trees’ health, protecting their root systems, and minimizing construction-related damage, you can help ensure that your trees thrive even after the project is completed. Not only will this protect the natural beauty of your property, but it will also contribute to a healthier environment for years to come. Whether you are a homeowner or a builder, investing time and resources in tree preservation is always a wise decision. If you have a future construction site plan reach out to Tree Life Pro’s today for a construction evaluation of all the trees on the property. Tree Life Pro’s serving Concord, Kannapolis, Charlotte, and the surrounding area.