Not always. It depends on the condition of the existing concrete. The underlying base for an overlay must be sound. If your concrete is
- heaving
- cracking severely
- spalling due to damage from de-icing salts and freeze-thaw cycles
- resting on unstable soil
an overlay will not fix your problems. If your concrete is simply discolored or has minor stains and cracks, then an overlay is an ideal way to cover up these surface imperfections and give your concrete a complete face lift.
For more information, see When to Use a Polymer Overlay.