Asked on Dec 7, 2011
We just had sidewalks poured a week ago.
It is cold... between 30-40 degrees since. The walks were covered for the 1st 3 days by the contractor. When they took the blankets off we noticed a white substance has stained the walks. Almost looks like it seeped up as the concrete was drying. We hosed the walks down in hopes of this washing away...but it did not. Are we stuck with this wierd staining? Will it go away?