Gray Concrete Construction, LLC

717.577.3520

Concrete Q's & A's

These are some common questions that people ask about concrete. If your question isn't addressed here, please do not hesitate to ask.

 

Q: How thick should my concrete be poured?

A: It really depends what kind of weight will be applied to the concrete on a regular basis.  We recommend: Sidewalks to be 4" thick, driveways to be a minimum 5" thick, and anything used for heavy equipment to be 6" to 8" think.  Each situation is different so we will assess each project accordingly.

 

Q: Does concrete crack?

A: Yes, unfortunately it is very normal for concrete to crack, it's just a matter of when.  This is not "always" a sign of poor workmanship.  There is no guarantee that your concrete will never crack.

 

Q: How long after the concrete is placed can it be used?

A: Please allow 24 hours for the concrete to cure before walking on it.  As for driveways,  it's recommended that you not drive on the concrete for approximately 7 days.  But it can take approximately 30 days for concrete to fully cure.

 

Q: How long will my concrete project take?

A: Most normal sized residential jobs require two days to complete - one day to tear out and one day to pour new concrete.   This is typical for regular concrete pours.  For decorative concrete, it could take an additional day or two as we need to return to power wash the project.  After it dries, we can then seal it to complete the project.  For more complex projects, it will require additional time.

 

Q: What is the purpose of the lines that you saw cut into the concrete?

A: The lines are called control joints and the purpose is to try to control any future cracks.  Though we cannot guarantee that your concrete will not crack, the control joints will help relieve any tension within the concrete and if any cracks form, it will hopefully stop at the joints.  There are other preventative measures that can used for your project, please do not hesitate to ask about them while we are quoting your project.

 

Q: Can I use a de-icer that says it is safe for concrete?

A: There is no such thing as a safe de-icer.  De-icers will cause flaking.   It is best that you use sand for traction.  Road salt from your tires can cause damage to your concrete driveway.  It is best that you clean your driveway with fresh water as soon as possible from any possible road salt.

 

Q: Do I need to clean the snow off my concrete?

A: Yes; within 24 hours, especially during the first year.  The freeze and thaw cycles can cause flaking of the surface of the concrete.

 

Q: How often do I need to reseal my stamped concrete?

A: Your stamped concrete should only be resealed when it's absolutely necessary to help maintain it's beautiful characteristics.  Heavy traffic areas or an extreme winter can create wear on the sealer.  If you are unsure if your decorative concrete needs resealed or not, be sure to try our "resealing test" located on our warranty page.  If your stamped concrete has lost it's shine but passes the "resealing test", we do not necessarily recommend resealing.


Q: What kind of maintenance is required for stained surfaces?

A: Stained surfaces are sealed; therefore, the same rules apply as for resealing stamped concrete.  Unlike colored or stamped concrete where a color additive is mixed into the concrete, the stain is applied onto existing or fresh concrete and through time may wear off; how frequently is out of one's control.