Key takeaways
- All concrete shrinks as it cures
- Control joints tell cracks where to go
- A weak base causes settling cracks
- The Joint Planner shows a layout for a slab
Almost every slab cracks a little. The goal is to control where and how much.
Shrinkage
Concrete shrinks as it dries. Control joints give the slab planned weak lines so cracks form there instead of randomly.
Settling and loads
A poor base or heavy loads can crack a slab. A good base and the right thickness help.
Water and weather
Freeze and thaw and trapped water make small cracks bigger. Sealing and good drainage help.
Try it
The Joint Planner draws a joint layout for a slab so you can see the idea.
Related services
Questions about your own property? Call or text 800-224-9245, or use the estimate form below.