Dry Stack Rock Wall Repair — Fieldstone Wall Taken Down and Re-Stacked
An old fieldstone wall that has bellied out, dropped a few stones into the flower bed or slumped in one section after a wet spring, stacked back up to stay.
Dry stack rock wall repair means taking the failed section of a fieldstone wall apart, fixing what is under it and behind it, and stacking the same stones back up tight. JMB Builders does this across the Twin Cities metro: stones set aside in order, the base dug out and rebuilt with compacted class 5, gravel packed behind the wall, and the wall re-stacked with a batter into the hill. Priced per linear foot of wall rebuilt.
- Priced per linear foot of wall rebuilt
- Your stone reused; shortfall matched from a stone yard
- Compacted class 5 base and gravel behind the wall
- Quote from photos, reply within one business day
- Licensed MN contractor BC809005
Send photos and hear back within one business day — or book a free in-home estimate.
Older yards around the Twin Cities have a lot of dry stacked fieldstone walls: rocks pulled out of the farm field decades ago and stacked without mortar to hold a bed or a short grade change. They last a long time because water runs right through them, but they fail in two ways. The stones at the bottom were set on dirt, and frost has been lifting and dropping them every winter until the courses above lost their bearing. Or the wall was stacked straight up instead of leaning back into the hill, and the soil behind it has been pushing it forward a little every spring.
The repair is not a patch. We photograph the section, pull the stones and lay them out on a tarp in roughly the order they came off, then dig out the base to firm ground. Class 5 goes in and gets compacted, the biggest, flattest stones go back down first as the footing course, and the wall is re-stacked with each stone bearing on two below it and the face leaning back into the slope. Clean gravel is packed behind the wall as it goes up so water drains instead of pushing.
Most of the time your stone is enough. When a wall has lost rock over the years, or a section was never thick enough, we match fieldstone from a local stone yard and work it in so the repair does not read as a patch.
What you supply
- Photos of the failed section from the front and from above, with something for scale
- Any stones that have already fallen out, left where they are
- Plants pulled from the bed behind the wall if you want to save them, or we set them aside
- A decision on whether the whole wall gets re-stacked or just the failed run
What JMB supplies
- Takedown of the failed section with the stones laid out and kept in order
- Excavation of the base to firm ground and class 5 compacted in lifts
- The wall re-stacked with a batter into the hill, every stone bearing on two below it
- Clean gravel packed behind the wall as it goes up; drain tile on taller walls
- Matched fieldstone from a stone yard where the wall is short on rock
- Backfill, topsoil and the bed behind the wall put back
- Photos of the finished wall in your job folder
How it is priced: per linear foot
Quoted in writing from your photos, with a reply within one business day. What moves the number:
- Length of the failed run vs. re-stacking the whole wall so it all matches
- Height of the wall; a knee-high garden wall and a chest-high retaining wall are different jobs
- Whether the base was ever built, or the stones sit on dirt and the whole run has to come down
- How much stone is missing and has to be matched from a stone yard
- Access: a wheelbarrow route to the back yard, or a skid loader for a wall of big stone
- Drain tile behind a wall that holds a real grade, run to daylight
Send a photo straight on, one from the end showing the lean, and a close-up of the bottom course. That tells us whether it is a section or the whole wall.
How long it takes
A failed section of a garden wall: one to two days. Re-stacking a full retaining wall of fieldstone: three to five days depending on height and how much stone has to be sorted.
How your project works
- 1
Send photos, get a written quote
Send three photos of the space and a sentence about what you want. You get a clear, itemized reply within one business day. Prefer a look in person? A free in-home estimate is always an option.
- 2
Pick materials, or bring your own
We help you choose profiles and materials that fit the house and the budget, or match your existing millwork exactly — or you buy the door or trim yourself and we install it. Everything is confirmed before the crew is scheduled.
- 3
Clean, precise installation
The crew shows up on time, protects floors and furniture, and installs with tight joints and consistent reveals. Photos of the finished work go in your job folder.
- 4
Walkthrough and invoice
We walk the finished work with you. If anything is not right, we fix it before we call the job done. Then one invoice, paid by check or direct deposit — no card fees, no payment links.
Situations and options
One slumped section re-stacked
The failed run comes down to firm ground and goes back up on a compacted base, tied into the sound wall on both ends so the repair bears on the old work instead of leaning on it.
Whole wall taken down and rebuilt
When the bottom course sits on dirt the whole length, every section will fail in turn. The wall comes down, the base goes in, and it is re-stacked end to end with the same stone and a consistent batter.
Leaning wall straightened
A wall that has bellied forward but not fallen is taken down to the course where the lean starts, the soil behind it is cut back, gravel goes in, and the courses go back up leaning into the hill.
Garden bed wall topped off
A low fieldstone border that has lost its top stones gets the loose course reset and a new top course of matched flat stone so the bed stops spilling onto the lawn.
Dry Stack Rock Wall Repair — Fieldstone Wall Taken Down and Re-Stacked: questions, answered
Can you repair a dry stack rock wall without rebuilding the whole thing?
Usually, if the rest of the wall is sound. We take down the failed section to firm ground, build a compacted class 5 base under it, and re-stack it, lapping the new work into the old on both ends. If the bottom course sits on bare dirt the whole length, the other sections are on the same clock, and re-stacking the whole wall once is cheaper than coming back three times.
Why do stacked stone walls fall apart in Minnesota?
Frost. The bottom stones were set on topsoil or clay, the ground under them freezes and heaves, and every spring the footing course is a little out of place. The courses above lose their bearing and start to slide. The other cause is a wall stacked straight up with soil packed tight behind it; the wet soil pushes, and the wall bellies out. A compacted gravel base and clean gravel behind the wall fix both.
Will you reuse my stone or bring new rock?
Your stone first. Old fieldstone has a color and a weathered face that new rock does not, and matching it is the whole point of the repair. We lay the stones out as they come off so the big flat ones go back at the bottom and the good faces go back out. Where the wall is short on rock we match fieldstone from a local stone yard and mix it through the courses rather than putting it all in one spot.
Does a dry stacked stone wall need drainage?
The wall itself drains through the gaps, which is why these walls last. What it needs is clean gravel packed behind it instead of soil, so the water gets to those gaps instead of sitting in clay and freezing. A low garden wall gets gravel behind it. A wall holding a real grade change gets gravel and a perforated drain tile at the base run to daylight, the same as a block wall.
Should the wall lean back into the hill?
Yes. A dry stacked wall is built with a batter, a slight lean back into the slope, so the weight of the stone pushes into the hill instead of away from it. A wall that was stacked plumb is the one that bellies out. When we re-stack a section we set the batter to match the sound parts of the wall, or set a proper one on a wall that never had it.
Can you add mortar so it stops moving?
We do not recommend it on a fieldstone wall. Mortar stops the wall from draining and from flexing with the frost, and a mortared wall that heaves cracks for good instead of shifting a stone you can reset. The fix for a moving wall is the base and the gravel behind it, not glue. If you want a mortared look, that is a different wall built on a footing, and we can talk through it.
Recent JMB work, from our job log
59 installs recorded across 30 Twin Cities communities since Dec 2025. Window and door installs for homeowners, builders and dealers. Counts come straight from our job log; no customer names.
Get a written quote for this job
Three photos and a sentence is enough: a reply within one business day, or ask for a free in-home estimate. Or text the photos to 763-204-2099.
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Read morePage reviewed October 1, 2026 · JMB Builders LLC, MN license BC809005 · All pavers pages
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