Please wait.'

Page is loading'


Home  > Raw materials & technologies  > Technologies  > Cleaning effectiveness of anti-graffiti pr...

Monday, 16 September 2019
pdf
Raw materials & technologies, Technologies

Cleaning effectiveness of anti-graffiti protected surfaces

Wednesday, 30 November 2016

A comparative study by Portuguese researchers evaluates the effectiveness of anti-graffiti protected surfaces cleaning with various graffiti paints.

Graffiti are a current happening that affects many monuments and buildings in urban areas. Source: Rike/pixelio.de

Graffiti are a current happening that affects many monuments and buildings in urban areas. Source: Rike/pixelio.de

Graffiti are a current happening that affects many monuments and buildings in urban areas. Additionally, graffiti removal involves high costs. To protect the surface of materials, anti-graffiti products have been developed to prevent the penetration of graffiti paint into the pore system of the substrates, facilitating its subsequent cleaning.

Various cleaning techniques were used

The paper presents four commercial anti-graffiti products (two sacrificial and two permanent) applied on three types of substrates (limestone and lime-based mortar with or without a finishing paint layer), in order to evaluate the effectiveness of anti-graffiti protected surfaces cleaning with various graffiti paints (two alkyl resin spray paints and one felt-tip marker). To evaluate the facility of graffiti removal, various cleaning techniques were used, such as high-pressure water washing and commercial chemical graffiti removers. Then, the cleaning effectiveness of substrates protected with anti-graffiti products was investigated by visual inspection (with a scale of evaluation), colorimetric tests and by FTIR analysis.

Grey paint was easier to remove

The results showed that, indeed, the anti-graffiti products facilitate cleaning the graffiti, especially those on the more porous substrate (mortar). However, the cleaning effectiveness protected with anti-graffiti products greatly depends on the type of graffiti paint applied (its colour and application by spray or marker). In general, grey paint was easier to remove than blue paints. However, it was found that the grey paint left yellowish stains.

The study is published in: Journal of Cultural Heritage.

top of page
Comments (1)
Add Comment

Post comment

You are not logged in

register