Can Tree Roots Damage House Foundations and Pipes? 

Tree roots may be able to increase shade, beauty, privacy, and even value to your home. However, in some cases, the root system may cause problems when trees are planted near your building structure, underground pipes, driveway, or any other property structures. These are some of the reasons why people wonder: Can tree roots damage house foundations? 

The simple answer is that tree roots may affect foundations and underground pipes, although they will not crack sound concrete just by pushing against it. They may be able to find weaknesses in your structure and exacerbate some problems in some cases. 

Knowledge about how tree roots act in soil conditions can help you identify possible problems in time. At Morgan Treeman Arborist Solutions, we offer professional tree services to ensure that homeowners handle their trees safely. 

Can Tree Roots Damage House Foundations? 

Therefore, can tree roots affect house foundations? Under specific circumstances, yes, although it depends on a number of variables. 

Trees usually have roots that grow within the soil looking for water, oxygen, and nutrients. Roots are usually shallow and grow in favourable conditions. When a tree is near a house, the roots will grow under or beside parts of the house. 

However, roots by themselves cannot easily penetrate and cause damage to a soundly built foundation. Nonetheless, there is indirect damage caused by roots. 

This may include roots growing into any cracks or weaknesses in the foundation. Tree roots also influence soil moisture, especially when the tree draws much of the moisture from the soil. Some soils contract and expand depending on the soil moisture, which causes some movement in the foundation. 

This takes into consideration the nature of the foundation, type of soil, size and type of the tree, as well as the distance between the tree and building. 

How Do Tree Roots Affect Foundations? 

Tree roots can interact with foundations in several ways. Understanding these potential effects can help homeowners determine when a tree may require professional assessment.  

Soil Moisture Changes 

The most common way by which trees affect foundations is through their interaction with the moisture level of soil. 

Large trees can remove a lot of water from the soil through their root systems. In soils that shrink during dry periods, large changes in the moisture content can cause soil movement. 

The changes in the soil volume lead to stresses on the foundation. Not all the trees near the foundation of your home cause foundation movement, but the interaction of trees, soil, drainage, and foundation needs to be taken into account. 

Existing Foundation Cracks 

The roots of trees might benefit from any preexisting cracks within the concrete, masonry, and other constructions. 

In the case of a crack in the foundation, the root may find itself in the opening while seeking moisture and nutrients, leading eventually to an increase in the size of this opening due to further root growth. 

This differs from the situation when a root pierces an uncracked concrete foundation. Quite often roots use pre-existing openings. 

Soil Movement 

The roots of trees can influence the soil under buildings as well. Due to changes in the growing pattern and moisture conditions, the soil around the roots can move or settle. The drainage, climate, construction activity, and the natural properties of the soil itself can cause such movements. 

But if there are some new cracks in the walls or foundation, it does not mean that the damage was caused by the tree roots. There can be many causes of such movements, and the opinion of specialists is needed to diagnose the situation. 

Can Tree Roots Damage Underground Pipes? 

Tree roots provide an obstacle for underground pipelines, particularly if they are old and/or broken. 

There is a natural attraction of tree roots to places where there is moisture. Hence, when there are any leaky joints in the pipe or cracked sections that leak moisture into the ground, the tree roots will be drawn to it. 

As a result, the roots get into these holes and continue to grow in the pipe. This mostly happens in old sewer or drainage systems which have joints. 

When you face repeated cases of blocked drains, slow drainage, foul odor, or any other unexplained problem with your plumbing system, it is worth considering whether there are roots inside the pipe. 

Why Do Tree Roots Grow Toward Pipes? 

Roots of trees do not typically locate themselves in the pipes. Rather, roots develop based on suitable conditions for growth. 

Pipe systems buried underground might create a good growing area for trees with their moisture and nutrient presence because of leaking substances from the cracked joints or broken pipe sections. 

This is the reason why even a well-developed tree might be linked to the problem with the pipes if there is a connection between the tree root system and underground infrastructure. 

Moreover, it should be mentioned that cutting down the tree is not always helpful in solving the problem with the pipe since the pipe itself needs fixing or replacement. 

What Types of Trees Have Aggressive Root Systems? 

There are some tree species that form large root systems naturally. Mature trees may form large root systems even after becoming established. 

However, it is hard to know how risky it would be by knowing the species only. 

Many variables affect the development of roots, like availability of water, soil type, drainage, space, age of tree, and surrounding buildings. A tree having a large root system in ideal conditions of soil will differ in many ways from a tree growing in compacted soil. 

When deciding to plant a tree next to your home, you should make sure you choose the right species and the right place to avoid any problems with your property. 

How Far Should Trees Be from a House? 

No specific distance applies to all trees under any circumstances. The appropriate distance to plant depends on the size of the mature tree, root development of the tree, soil conditions, drainage, type of foundation, pipelines, and space. 

A small ornamental tree may work closer to your house compared to a big full-size tree having a large root structure. When planning to plant a tree close to your house, you should think about its ultimate size, and not how big it is at present. 

If there is already a tree grown near your home, uprooting it does not have to be the first step. There are ways of assessing the potential danger from the tree. 

Should You Remove a Tree Near Your House? 

Cutting down a tree should not be seen as an automatic choice if a tree is found near a building. Trees are beneficial, offering many positive features such as shade, shelter, cooling, aesthetic value, and ecological worth. Unnecessary cutting down of a tree will deprive one of its benefits. 

Rather, it would be advisable to evaluate the circumstances according to the state of the tree, the size, location, and other relevant factors. 

In some situations, pruning or other tree management may be appropriate. In others, removal may be considered where there is a demonstrated safety or property concern. 

Professional assessment is especially useful for large or mature trees growing close to structures. 

Why Professional Tree Assessment Matters? 

Problems related to tree roots may not be easy to detect through surface examination alone. 

Tree roots are buried deep below the surface, and any damage caused to the foundation or to plumbing may arise from different factors. Removing the roots without knowing the tree and the circumstances under which it is growing may bring about other problems. 

An arborist will examine the state of the tree and the conditions around it. This will enable the decision-maker to know whether tree management is required or not.