How to Fix a Driveway Damaged by Tree Roots: A Guide for Homeowners

If you have trees on your property, you know they provide shade, appeal, and value. But did you know that as trees grow, their roots can spread and eventually find their way beneath your driveway? When this happens, tree roots can push up the driveway surface, causing cracks, gaps, and other damage that can be a trip hazard and lead to injury.

If you’re starting to see cracks or signs of tree root damage on your driveway, it’s important to take steps to repair the damage and prevent this from happening again. Here are our expert tips on how to fix tree root damage and protect your asphalt driveway.

Why Do Tree Roots Cause Damage to Driveways?

Tree roots are always seeking moisture and nutrients, which they find in soil. As the tree grows, its root system spreads out in search of these resources. If the roots find their way beneath your driveway, they can push up the pavement as they grow thicker.

This is especially likely to happen if the soil around your driveway is compacted or lacks oxygen. Tree roots prefer uncompacted soil where they can grow more easily. That’s why you often see tree root damage on sidewalks and driveways, where the soil is more compacted than in other areas of your yard.

How to Repair Tree Root Damage on Your Driveway

If you notice tree roots pushing up your asphalt driveway, it’s important to act quickly to prevent further damage. However, before proceeding with any repairs or root cutting, consult with an arborist. They can assess the health of your tree and advise you on the best course of action to avoid harming the tree or compromising its stability. In some cases, the arborist may recommend removing the tree entirely if the damage is severe and other options are not viable.

If the arborist determines that root pruning is a safe option, here are some steps you can take:

1. Remove the damaged asphalt: Use a gas-powered asphalt and concrete saw to carefully cut away the damaged portion of your driveway. Be sure to cut deep enough to remove any visible roots.
2. Cut back the tree roots: If the arborist determines it’s safe to do so, cut back the tree roots that are causing the problem. Use a saw or loppers to cut the roots as far back from the driveway as the arborist recommends. Be careful not to damage the tree’s main trunk or structural roots, as this could cause the tree to die.
3. Install a root barrier: To prevent the roots from growing back toward your driveway, install a root barrier made of metal or durable plastic. The barrier should be installed under the guidance of the arborist to ensure it is placed correctly and does not cause harm to the tree’s root system.
4. Repair the driveway: Once you’ve removed the roots and installed a barrier (if recommended), you can repair the driveway. If the damage is minor, you may be able to fill in the cracks with asphalt filler. For more extensive damage, you may need to replace the damaged section of your driveway entirely.

Preventing Tree Root Damage in the Future

While repairing tree root damage is possible, it’s always better to prevent the problem from happening in the first place. Here are some tips to help protect your asphalt driveway from tree root damage:

1. Plant trees away from your driveway: When planting new trees on your property, be sure to choose locations that are at least 20 feet away from your driveway or any other paved surfaces.
2. Choose trees with non-invasive roots: Some tree species, such as maple and ash, have roots that are more likely to cause damage to pavement. When selecting trees for your property, choose species with less aggressive root systems, such as oak or hickory.
3. Keep soil around your driveway uncompacted: Compacted soil encourages tree roots to grow closer to the surface, where they can damage your driveway. To prevent this, avoid driving or parking on the soil near your driveway.
4. Consider a flexible driveway surface: If you’re installing a new driveway or replacing an old one, consider using a flexible surface material like asphalt instead of rigid concrete. Asphalt is less likely to crack or buckle under pressure from tree roots.

When to Call in the Professionals

If you’re unsure how to repair tree root damage on your driveway, or if the damage is extensive, it’s best to call a professional. An asphalt repair company like Riley Asphalt can assess the damage and recommend the best course of action.

Remember, before attempting any repairs or root cutting, always consult with an arborist first. They can help you determine the best way to protect both your tree and your driveway, ensuring the long-term health and stability of both.

The Bottom Line

Tree roots pushing up your asphalt driveway can be a frustrating problem, but it’s one that can be repaired with the right approach. By consulting with an arborist, removing the damaged asphalt, cutting back the roots (if deemed safe), installing a root barrier, and taking steps to prevent future damage, you can keep your driveway looking and functioning its best for years to come.

If you need help repairing tree root damage on your driveway or any other asphalt maintenance issues, contact Riley Asphalt today. Our team of experienced professionals can provide the expert advice and quality workmanship you need to keep your property looking its best.