Tree Roots Cracking Your Driveway? What to Do (and When to Remove the Tree)

Tree roots crack driveways when they grow underneath concrete or asphalt and push upward. In Massachusetts, freeze-thaw cycles make it worse: water seeps into small cracks, freezes, expands, and turns a hairline split into a pothole. The most common culprits in Middlesex County are Norway maples, silver maples, and willows, all of which have shallow, aggressive root systems that spread far beyond the canopy. If your driveway is buckling and you can see roots near the surface, the tree is almost certainly the cause. The fix depends on how bad the damage is: sometimes you can repair the driveway and save the tree, and sometimes the tree needs to come down. I have been dealing with root-damaged driveways across Billerica and the surrounding 17 towns since 1995, and here is what I tell every homeowner who calls about it.

How tree roots crack driveways

Tree roots grow outward from the trunk in the top 12 to 18 inches of soil. They follow water and nutrients, and they thicken every year. A root that is the diameter of a pencil this year will be the diameter of a garden hose in five years and the diameter of a baseball bat in fifteen. Concrete and asphalt are rigid. Roots are not. When a growing root encounters the underside of a driveway slab, it does not stop. It pushes up.

In Massachusetts, the freeze-thaw cycle accelerates the damage. Water collects in the gap between the root and the slab. It freezes overnight and expands. The crack widens. More water gets in. By spring, what started as a slight buckle is a visible hump or a split in the concrete. I have seen driveways in Tewksbury and Wilmington where a single Norway maple root lifted a four-foot section of concrete by two inches in under ten years.

Which trees cause the worst driveway damage

Not all trees are equal when it comes to root damage. The species that cause the most problems in our service area are:

• Norway maple. The worst offender. Shallow, aggressive surface roots that spread far beyond the canopy. Very common in subdivisions built from the 1960s through the 1990s across Burlington, Woburn, and Wilmington.
• Silver maple. Fast-growing roots that can spread three times the width of the canopy. The wood is also weak, so these trees drop limbs in every storm. We remove more silver maples than any other species in Lowell and Dracut.
• Willow. Roots seek water and will grow under driveways, sidewalks, sewer lines, and foundations to find it. If you have a willow within 50 feet of your driveway, the roots are probably already under it.
• American elm. Shallow root system that spreads wide. Common in older neighborhoods in Lexington, Bedford, and Concord.
• Some oaks. Red oaks in compacted soil develop surface roots that can lift hardscapes. This is less about species and more about soil conditions — oaks in loose, deep soil root down. Oaks in clay or compacted soil root sideways along the surface.

If you are planting a new tree near a driveway, avoid the species above. Better choices for Middlesex County include sugar maples (deeper root system than Norway maples), hornbeams (compact, well-behaved roots), kousa dogwoods (small tree, minimal root spread), and Eastern redbuds (shallow but not aggressive). Our guide to the best trees to plant in Massachusetts covers species selection in detail.

What to do when your driveway is cracking

Here is the decision tree I walk through with homeowners:

Step 1: Confirm the tree is the cause

Not every driveway crack is caused by tree roots. Settlement, poor original installation, frost heave, and heavy vehicle loads all cause cracking too. The tell for root damage: the crack follows a path that curves or lifts in one direction, and when you look at the edge of the driveway near the tree, you can see roots at or near the surface. If the crack runs straight along a control joint, that is probably not root damage. If the concrete is heaving upward in a ridge that points toward the tree, that is almost certainly a root.

Step 2: Assess how big the root is

This matters for the tree. A root under 2 inches in diameter can usually be cut without significant risk to the tree. A root over 4 inches in diameter is a structural root — cutting it can destabilize the tree and make it a falling hazard in the next storm. If you are not sure how big the root is, call us. We can assess it in a few minutes and tell you whether cutting it is safe or whether the tree is a bigger problem than the driveway.

Step 3: Decide between repair, barrier, or removal

You have three options, and the right one depends on the situation:

Option A: Repair the driveway and keep the tree. This works when the damage is minor (small cracks, slight buckle), the root is small enough to cut safely, and the tree is otherwise healthy and valuable. You cut the offending root, repair the driveway section, and monitor. The risk: other roots may eventually cause the same problem. You are buying time, not solving the problem permanently.

Option B: Install a root barrier. A root barrier is a rigid panel — usually high-density polyethylene — installed vertically in a trench between the tree and the driveway. It deflects roots downward, away from the hardscape. Barriers work best on younger trees or when installed at the time of planting. For mature trees with established root networks, barriers are less effective because the roots already extend past where the barrier goes. Installation costs $500 to $2,000 depending on length and depth. It is a decent preventive measure for new plantings but a band-aid for mature trees.

Option C: Remove the tree. This is the permanent fix. If the tree is a species known for aggressive roots (Norway maple, silver maple, willow), if the root damage is extensive, or if the tree is already declining, removal solves both the driveway problem and the long-term liability. We remove the tree, grind the stump, and you wait 6 to 12 months for the root system to begin decomposing before repairing the driveway. This sequence matters: if you pour new concrete over actively decomposing roots, the settling will crack the new slab too.

Driveway repair costs after root damage

Repair Type	Cost Range	When It Makes Sense
Grinding down a lifted edge	$200 – $500	Minor trip hazard, cosmetic fix
Mudjacking / slabjacking	$500 – $1,500	Lifting a settled slab back to level
Section replacement (one panel)	$2,000 – $5,000	Severely cracked or heaved section
Full driveway replacement	$5,000 – $15,000+	Widespread root damage across multiple sections
Tree removal	$500 – $3,000	When the tree is the ongoing cause

The math on this is straightforward. If you repair the driveway without addressing the tree, you will be repairing it again in 5 to 10 years when the next root reaches the surface. A $1,500 tree removal today prevents a $5,000 driveway replacement from becoming a $10,000 repeated repair cycle. Our tree removal cost in Billerica guide covers pricing by tree size.

When the tree needs to come down

Not every root-damaged driveway means the tree has to go. But here are the situations where removal is the right call:

• The tree is a Norway maple or silver maple. These species will keep producing surface roots regardless of what you do. Cutting one root just redirects growth to the next one. The driveway damage will repeat.
• Multiple roots are affecting the driveway. If you can see three or more roots at the surface within 20 feet of the driveway, the root system is extensive and aggressive. Barriers and selective cutting will not contain it.
• The roots are also affecting your foundation, sewer line, or sidewalk. When root damage extends beyond the driveway to other structures, the tree is a systemic problem. See our tree roots and foundation damage guide for more on that.
• The tree is already declining. A dying tree with aggressive roots is the worst combination: you get the structural damage from the roots and the liability of a failing tree. If the canopy is thinning, the trunk has cavities, or there are other warning signs, removal addresses both problems.
• You are replacing the driveway anyway. If the driveway has reached the end of its life and you are planning a full replacement, removing the tree first and waiting for settling is the smart sequence. It costs more upfront but saves you from cracking the new driveway.

Can you pave over tree roots?

You can, but it does not last. Asphalt is flexible enough to tolerate some root growth for a few years. Concrete is not — it cracks as soon as the root lifts it. Even with asphalt, a 3-inch root will eventually buckle the surface. If you are resurfacing an asphalt driveway and there are active roots underneath, the resurfacing is a temporary fix. The roots will push through again.

The honest answer: if the tree is staying, plan on periodic driveway maintenance. If the driveway is staying, plan on removing the tree. Trying to make both permanent usually means neither is.

What happens to the roots after the tree is removed

After we remove a tree, the root system stays in the ground. The roots are dead — they were cut off from the tree's vascular system when it came down. Over the next 5 to 10 years, soil organisms, fungi, and bacteria decompose them. During this process:

• The ground may settle slightly as roots decompose and the soil fills the voids they leave behind
• Mushrooms may pop up over the root zone in fall. This is normal and temporary.
• Large surface roots will still be visible for 2 to 5 years before they break down enough to remove or cover with soil

For driveway purposes, we recommend waiting 6 to 12 months after tree removal before replacing the driveway section. This gives the most active decomposition a chance to settle. After that, the ground is stable enough for new concrete or asphalt.

How to prevent root damage to a new driveway

If you are installing a new driveway or replacing a damaged one, these steps reduce the risk of future root problems:

1. Choose the right tree species. If you want a tree near the driveway, plant a species with a deep, non-aggressive root system. Sugar maple, hornbeam, kousa dogwood, or serviceberry are good choices for Middlesex County.
2. Plant far enough away. A good rule: plant the tree at least as far from the driveway as its mature canopy spread. A tree with a 30-foot canopy should be at least 30 feet from the driveway edge.
3. Install a root barrier at planting time. If you must plant closer, a root barrier installed when the tree is young is far more effective than trying to retrofit one later.
4. Use permeable pavers instead of solid concrete. Permeable pavers sit on a gravel base that allows roots to grow through without lifting the surface. They are more expensive upfront but tolerate root growth much better than poured concrete.

Straight answers

Is it cheaper to repair the driveway or remove the tree? Removing the tree is almost always cheaper than repeated driveway repairs. A $1,000 to $2,000 tree removal prevents $5,000 to $15,000 in future driveway work.

Can I sue my neighbor if their tree roots are cracking my driveway? In Massachusetts, you can trim roots that cross onto your property up to the property line. But if cutting those roots kills or destabilizes the tree, you may be liable for the tree's value. The safer approach is to talk to your neighbor and share the cost of removal. If that does not work, consult an attorney. Our Massachusetts tree removal permits guide covers the legal framework.

Will my homeowner's insurance cover root damage to my driveway? Usually not. Standard homeowner's policies exclude damage from tree roots. The exception: if a root-damaged driveway section collapses and causes injury, your liability coverage may apply. Check your policy.

How fast do tree roots grow under driveways? It depends on the species and soil conditions. A silver maple root can grow 3 to 5 feet per year in good soil. A Norway maple root grows 1 to 2 feet per year. In compacted clay soil common in Tewksbury and Billerica, growth is slower but the roots stay closer to the surface where they do more damage.

Should I just live with the cracked driveway? That depends on how bad it is. A slight buckle is cosmetic. A lifted edge is a trip hazard — and a liability if someone trips on your property. A cracked slab that is actively splitting apart will only get worse and eventually needs replacement. The longer you wait, the more the root grows, and the more expensive both the tree removal and the driveway repair become.

Get a free assessment

If tree roots are cracking your driveway, sidewalk, or walkway, call McDonald Tree Service at (978) 375-2272. We will come out, look at the tree and the root system, and give you an honest recommendation. Sometimes that is removal. Sometimes it is selective root pruning. Sometimes the driveway repair is the bigger job and the tree can stay. We have been making these calls across Billerica, Chelmsford, Lowell, Tewksbury, Wilmington, Burlington, Bedford, Carlisle, Dracut, Westford, Andover, Woburn, and Lexington since 1995. No charge for the visit. No pressure. Just the answer.