Concrete sealed with a urethane coating should not be walked on with the exception of a recoat driven on or wet for at least 36 48 hours.
Concrete sealer dry time before rain.
Normally we like to allow at least 24 hours before any rain but we use additives that can allow us to speed up the curing process.
The usual drying times are about 4 8 hours.
At least 24 48 hours to dry before you start walking or driving on it.
Typically it can take anywhere from 10 12 hours to dry before being able to be walked on but they will continue to harden for up to 48 hours after being applied.
There are a few reasons why you should wait at least 24 hours to seal your concrete.
You can walk on the surface within a few hours but ensure that the concrete remains dry for at least 36 hours so the sealer has ample time to react.
However when there is enough sunlight and no trees are hindering the sun from drying the driveway it will take a shorter time.
The dry time of a urethane will depend on the type of urethane used.
Wait for a dry spell open as many windows and doors as possible use a fan to move air across the floor and take another test after 24 to 36 hours of drying.
The biggest problem you may be faced with is the effect the rain may have had on the surface of the concrete.
The bad news is that the surface of the concrete should not have been allowed to dry out for a week or more a time also referred to as the curing period.
Usually sealers take at least 30 minutes to dry or 24 hours the most.
If the hvac system in the building is operational run the air conditioner to help remove moisture.
Don t forget to read the instructions and look for the general drying times when choosing the right kind of sealer.
Yes rain can wash the sealer off if it rains right after its put on.
This is very important especially when applying an acrylic sealer.
If it is cold and cloudy we recommend that you give the sealer at least 72 hours before you can start driving on it.
Within the first 30 minutes the sealer will dry off from the surface.
Water and moisture want to escape it is a natural reaction.
While the surface of the concrete may appear dry water and moisture is still present in the pores.