Symptoms
- Gaps opening up between tiles
- Tiles shifting when equipment is moved across them
- Edges curling upward at the seams
- One tile popped completely loose from its neighbors
Likely causes
- CommonHeavy equipment dragged across the floorSliding heavy weights or machines across interlocking tiles puts lateral stress on the seams.
- CommonTemperature and humidity changesFoam and rubber tiles expand and contract with temperature, which can widen gaps over time.
- PossibleUneven subfloorA subfloor that isn't flat prevents tiles from interlocking fully and evenly.
- PossibleWorn or damaged interlocking tabsThe small puzzle-piece connectors can wear down or break after repeated separation and reassembly.
- Less commonTiles laid down without acclimating firstTiles installed immediately out of the box without time to adjust to room temperature can shift more as they settle.
What to do
- Lift equipment to move it rather than dragging it across interlocking tiles.
- Push separated tiles back together firmly, working from one edge of the room across to align the pattern.
- Check the subfloor underneath a chronically separating area for unevenness, using a thin self-leveling underlayment if needed.
- Inspect the interlocking tabs on problem tiles for cracks or breaks that prevent a snug fit.
- Let a fresh set of tiles acclimate to room temperature for 24–48 hours before final installation if you're laying new flooring.
- Consider adding perimeter edge strips if your set includes them, which help lock the outer tiles in place.
- Replace individual tiles with broken interlocking tabs rather than trying to force a damaged connection back together.
Tools and parts
- Rubber mallet (for reseating tiles)
Gym flooring tile replacementSearch: “interlocking gym floor tile replacement”
When to call a pro
No professional repair is typically needed; replacing individual damaged tiles and addressing an uneven subfloor usually resolves ongoing separation.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.