Acceptable Water Drainage

by Jake
(Illinois)

I have a brick paver patio that was installed and after a good rain we have some puddling. I was wondering, what is an acceptable drain rate on water? Are there any industry standards that say X amount of water should drain in X amount of time?

After 1-2 hours the water is gone.

ANSWER
Hi Jake,
I don't know of any industry standards stating how long it should take for water to drain away, but 1-2 hours is too long in my opinion.

There are, however, standards as to what the correct pitch should be so that water drains away correctly. That is 1/4" per foot, or 2%grade.

In your situation, the severity of the problem would depend on where it is collecting. If it is near your house it's more serious than if it is in the center or at the perimeter.

You could also have them relaid correctly. That is the nice part about pavers...they can be relaid easily.

I hope this was helpful. Please reply if you have further questions.

Susan