Something is creeping under your lawn and it is not a mystery movie prop. Tree roots can slowly pry at foundations, crack sidewalks, and clog sewer pipes — but most of the time, you have plenty of warning if you know what to watch for.

What roots actually do

Tree roots don’t punch through solid concrete. What they do is exploit existing cracks and gaps, expanding them year over year as the root grows in diameter. A hairline crack in your sidewalk becomes a heave; a slight gap at a sewer joint becomes a clog.

The damage is slow. Which means it’s also preventable.

The three problem zones

Foundations

Most foundation root damage happens to clay soils during dry spells, when the tree pulls moisture from the soil under the slab and the slab settles. Concerning species near foundations in our area: cottonwood, willow, silver maple, elm. Rule of thumb: keep large-species trees at least their mature height away from any foundation.

Sidewalks and driveways

A heaved slab is almost always a surface root that grew between the soil and the concrete. You can sometimes shave the root and re-pour the slab, but if the tree is still growing, the root will be back in 5-10 years.

Sewer lines

Older clay-tile or cast-iron sewer pipes leak water at every joint, which roots find irresistible. PVC pipes installed since the 1980s are far more resistant. If you have a tree near a known clay sewer line, annual snaking is far cheaper than removal.

When the tree has to go

Sometimes there is no fix. If a mature tree is actively damaging a load-bearing structure or a primary sewer line, removal is usually the right call — and the longer you wait, the more the damage compounds. We’ll walk you through what’s reasonable.

Send us a photo of the cracked surface and the tree, and we’ll give you an honest read.