When a crack is cosmetic, when it is structural, and what fixing it should cost.
Resurfacing a sound slab, an overlay that renews the surface, typically runs $3 to $7 per square foot, well under the $8 to $14 of a full replacement. It only works when the slab underneath is stable and level.
Not all cracks mean trouble. Hairline shrinkage cracks are normal and cosmetic. The ones that matter are cracks wide enough to catch a shoe, cracks with one side higher than the other (a sign the slab has moved), and spalling where the surface is flaking away. Those point to base or moisture problems that resurfacing will not fix.
| Fix | Good for |
|---|---|
| Crack filling / sealing | Hairline and narrow cracks; stops water intrusion |
| Resurfacing / overlay | Worn or lightly cracked surface on a stable slab |
| Slab jacking / leveling | A sunken but otherwise intact slab |
| Replacement | Structural failure, widespread cracking, heaving |
Renovar la superficie de una losa en buen estado cuesta entre $3 y $7 por pie cuadrado, frente a los $8 a $14 de un reemplazo completo.
No. La renovación de superficie solo funciona sobre una losa estable y nivelada. Si las losas se hundieron o tienen desprendimiento generalizado, lo honesto es reemplazar.