P03.03
MavPatch — the concrete repair line
Three repair products with three different jobs: MavPatch Epoxy for deep structural repair, MavRapidPatch for speed, MavPolyPatch for cold temperatures and feather edges. The wrong patch under a system fails the whole floor.
- Run the three-line decision matrix from memory
- Match a patch to a schedule window and an ambient temperature
- Know which patches belong under a urethane cement install
The patch is part of the system
Concrete repair looks like a small decision and behaves like a structural one. A patch that has not cured when the system goes over it, or that feathers where it should not, takes the finished floor with it. Every rep and every crew lead should be able to run this matrix without looking it up, because the choice is usually made on site under schedule pressure.
The decision matrix — three lines, know them cold
| Product | Driver | Walk-on at 70°F | Feather edge |
|---|---|---|---|
| MavPatch Epoxy | Structural, deep, bond-critical. Install window 50–90°F. Typically overnight cure before a topcoat. | 6–8 hours | No — needs a mechanical stop |
| MavRapidPatch | Fast open. Magnesium phosphate cementitious chemistry. | ~1 hour | Yes |
| MavPolyPatch | Cold temperature and feather-edge work — performs at 35°F where cementitious and epoxy patches stall. | ~30 minutes | Yes, to a knife edge |
Say it out loud, then check yourself
- 01Give the three-line decision matrix.
MavPatch Epoxy — structural, deep, bond-critical; walk-on 6 to 8 hours; no feather edge. MavRapidPatch — fast open; walk-on about 1 hour; feathers. MavPolyPatch — cold temperature and feather edge; walk-on about 30 minutes; feathers to a knife edge.
- 02Walk-on times at 70°F for all three.
MavPatch Epoxy about 6 to 8 hours; MavRapidPatch about 1 hour; MavPolyPatch about 30 minutes.
- 03A 1/2-inch-deep patch must accept MavCoat SLE within 6 hours. Which one?
MavRapidPatch. Its roughly 1-hour walk-on keeps the 6-hour recoat window open with margin. MavPatch Epoxy needs overnight cure and would blow the schedule, and MavPolyPatch is the cold-temperature option you do not need when ambient is fine.
Takeaways
- Driver, walk-on time, feather edge — those three facts choose the patch.
- MavRapidPatch is magnesium phosphate cementitious and walks on in about an hour.
- Under a MavCrete install, the patch is MavPatch Epoxy or MavRapidPatch — not polyurea.