Reddish-Brown Staining After Rain
DFW's clay-rich soil carries iron oxide and other minerals that create the region's characteristic reddish-brown color. During heavy rain, runoff carrying this soil can splash onto lower walls, driveways, and walkways, leaving stains that resemble rust but originate from the soil itself.
Where It Shows Up Most
Areas without adequate splash guards or gutters, low points where runoff naturally collects, and driveways adjacent to unlandscaped clay soil are the most common places to see this type of staining accumulate over time.
Cleaning Approach
Clay soil staining generally responds well to standard pressure washing techniques, though heavily set-in stains on porous surfaces like unsealed concrete may require a specialized stain treatment in addition to standard cleaning.