How to: The Cure Time for Concrete Footers

Footers, the strengthening force around the perimeter of concrete slabs, can be constructed in two different ways. Footers can be dug and poured separately from the main foundation or they can be dug and poured as part of the foundation. Either way results in a properly poured slab. Properly cured concrete results in the strongest concrete possible, however, so guidelines should be followed closely.

Construction plans
Concrete
Steel trowel
Water hose

Instructions

- 1
  Pour the footers as designated by the construction plans. Finish the concrete with a steel trowel once it has hardened so that a gloved finger leaves no more than a 1/4-inch indentation.
- 2
  Allow the concrete to rest for two to four hours. Mist the concrete gently with the water every four to six hours to avoid excess loss of water. Rapid evaporation of the water content in concrete leads to compromised strength.
- 3
  Continue in this manner for 24 to 48 hours and then allow the concrete to dry out. At that point, it is safe to build on top of the cured footers, but the concrete has not reached it's maximum strength.
- 4
  Wait seven days before building on the footers if you desire a stronger foundation. However, even if you build on the footers before seven days is up, the concrete will continue to cure without your assistance.
- 5
  Allow 28 days for maximum strength curing of the concrete footers to be achieved. At this point, sealers and other coverings can be applied to the concrete safely.

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