Case 1

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pre_stain1
staining_case 1

Introduction

Dirt Staining due to Grooves

Type of Building: Public Residential

stain1a
Figure 1

Atmospheric dust can be collected at horizontal surfaces such as grooves. In this case, stains are formed on the facades of residential buildings due to rain washing down the dirt that are accumulated at the jointing grooves of expansion joints of the buildings (Figure 1).