Inadequate base compaction
A base that was not compacted in proper lifts settles over time, and the turf follows it down.
Repair & Restoration
Sinking and Low Spots in Artificial Turf: It Is Usually the Base
A focused answer on why turf dips, why infill alone does not fix it, and what an honest repair has to reach.
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Ask TurfManTurf Sinking & Low Spots
The Answer
The short answer
When artificial turf sinks or forms a low spot, the problem is almost always underneath the turf — in the base, subgrade or drainage — not in the grass itself. The turf is simply following a surface that has settled, washed out, or was never compacted flat to begin with.
Adding infill to fill a dip is not a structural repair. It may hide the depression temporarily, but the base underneath continues to move and the low spot returns, often while also trapping water.
A real repair means accessing the base under the turf, rebuilding the depressed area with properly compacted material, re-establishing slope and drainage, and re-laying the turf flat. The scope is confirmed after a diagnostic, especially if the low spot also holds water.
On this page
- The short answer
- Causes & considerations
- What inspection or service may involve
- Honest limitations
- Related repair & service pages
Causes & considerations
Why This Happens
Understanding the driver helps choose cleaning, repair, maintenance — or a larger scope conversation.
Base washout or erosion
Water moving under the turf can carry base material away, leaving a void the turf drops into.
Organic material left under the base
Buried sod, roots or debris decompose and shrink, creating a depression from below.
Drainage pooling
A low spot that collects water accelerates its own failure by softening and eroding the base.
What service may involve
What Inspection or Service May Involve
Photos help triage. Some conditions only show after walking the surface, checking drainage, and lifting a corner when appropriate.
01
Depression and water check
A diagnostic measures the dip and confirms whether it also collects water after rain — a sign the base and drainage both need attention.
02
Base access plan
The repair plan describes where turf will be lifted, how the base is rebuilt, and how drainage is restored before the turf is re-laid.
03
Repair vs. replacement value
When low spots are widespread or the base has broad defects, replacement may be the better value and is compared honestly.
Honest limits
What We Will Not Promise
Straight talk about what a repair, cleaning, or documentation can and cannot deliver.
Adding infill is not a structural repair for a depressed base.
If the base or drainage has broad defects, a single-spot repair may not be the honest answer.
Final scope and price are confirmed after an on-site diagnostic.
Related repair & service pages
Take the Right Next Step
Get Started
Ready for a clear next step?
Send wide and close-up photos, or book a visit. Cleaning, odor treatment, and repairs are evaluated separately and approved before work begins.