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Why Patio Black Spots Return & How to Stop Them
Why Patio Black Spots Keep Returning Patio black spots keep returning because they are usually not just surface dirt. In most cases, they are colonies of black lichen or deeply embedded organic growth that has rooted into the pores of natural stone, concrete or paving. If the organism is not...
Patio Black Spots: Why They Return & How to Stop Them
Why Patio Black Spots Keep Returning Patio black spots keep returning because they are usually not just surface dirt. In most cases, black spots on paving are colonies of lichen and associated organic growth that have anchored into the microscopic pores of stone, concrete or clay. If the growth is...
