Why is graffiti harder to remove from some brickwork?
Brick varies in density, texture and porosity. Paint may remain on a smooth surface or penetrate a more open one, while weathering and earlier treatments can change the response. Mortar joints may have different composition and condition from the brick face.
Why is graffiti harder to remove from some brickwork?
Brick varies in density, texture and porosity. Paint may remain on a smooth surface or penetrate a more open one, while weathering and earlier treatments can change the response. Mortar joints may have different composition and condition from the brick face.
Assessment identifies the masonry, extent of the mark and nearby materials before choosing an approach. A small trial can indicate how paint responds, but variation across a wall means it is not a guarantee of uniform results. Fragile joints or coated brick may call for restrictions or further advice.
The objective is to reduce appropriate graffiti contamination without unnecessary surface change. Residual pigment may remain where it has penetrated pores. Provide the age of the graffiti and previous cleaning details when enquiring; cleaning is not a repair for damaged mortar or deteriorating brick.
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