Denver Foundation Repair

Most of what decides whether your foundation moves was settled before you ever saw the house. Under the century-old blocks around Washington Park, the Highlands, and Park Hill sit foundations built to another era's standards, resting in clay that swells when wet and lets go when dry. Under the newer construction in Central Park, the clay is the same; what differs is how well each builder prepared for it. Either way the soil is running the experiment, and your basement walls are the readout.

Our edge is simple. We keep a structural engineer in-house, so the person deciding whether your crack is cosmetic or structural is qualified to decide and isn't paid by the pier. Sometimes the answer is underpinning. Sometimes it's a downspout extension and a six-month check-in. You get the real answer either way, in writing, from a free evaluation.

Clay, water, and the fight under your floor

Expansive clay is the villain in nearly every Denver foundation story. It swells as it takes on moisture and shrinks as it dries, and it never does either evenly. The soil under a leaky downspout stays wet and pushes up while the soil under the middle of the house stays dry and drops away, and your foundation bridges the difference until it can't. That's where the diagonal cracks, the racked door frames, and the sloping floors come from. Not failure of the concrete. Movement of the dirt.

Water is the accomplice. Downspouts that quit a foot from the wall, flowerbeds graded toward the house, a patio pitched the wrong direction: each one feeds the clay exactly where you don't want it fed. So our evaluations start outside at the gutters, not inside at the crack. It's the same story from Sloan's Lake bungalows to University Hills ranches: the houses change, the clay doesn't. Manage the water and half the foundation problems in this city stop getting worse.

A field guide to foundation cracks

Signs worth a phone call

• Doors that stuck all summer, then swing free in the fall
• Fresh drywall cracks above door frames, upstairs or down
• Gaps opening between trim and wall, or floor and baseboard
• A basement crack that's wider at the top than at the bottom
• Water showing at basement corners or window wells every spring
• Brick veneer cracking near the corners outside
• A chimney that's started leaning away from the house

Piers, wall work, or a boring drainage fix

When a foundation has genuinely settled, the fix that lasts is underpinning: steel push piers or helical piers driven past the active clay to strata that don't move with the seasons, then the structure lifted back toward level and locked off. Bowed basement walls call for a different toolbox, bracing or anchoring matched to how far the wall has come in. Stable, dry cracks might need nothing but injection and a photo log. The point of having our own engineer is that the remedy gets matched to the mechanism, not to whatever equipment happens to be on the truck.

And more often than homeowners expect, our first recommendation is the boring one. Extend the downspouts. Regrade the beds. Let the clay calm down and re-measure in six months. Epoxy pumped into a crack that's still opening is a bookmark, not a repair, and piers sold to a house that only needed gutters is how this trade got its reputation. We'd rather be right about the small job.

People apologize for calling us about a little crack. Don't. The cheap visits are the early ones. The expensive ones start with somebody who watched a crack grow for six years before picking up the phone.What our crew lead tells homeowners

Foundation season on the Front Range

Clay moves on a calendar. It swells through the wet spring, holds through an irrigated summer, then shrinks hard as everything dries down in fall. That's why doors that stick in May free up in October, and why cracks tend to show their growth in the shoulder seasons.

Repairs themselves run year-round. Pier work happens below grade and doesn't care much about air temperature, and winter's drier soil can make for cleaner excavation. So don't babysit a structural problem until spring. The best month to deal with a foundation issue is the month you noticed it; movement compounds quietly, and the fix never gets cheaper by waiting.