Graffiti removal is an important aspect of Masonry Cleaning especially when it relates to a delicate historic surface such as this example; plasterwork within a C12th monastic ruin, part of the Scheduled Ancient Monument. Add some bats in the vaults beneath and a running flood in the adjacent river – how should we tackle this and safeguard the fabric and ecology? Read more in this blog post by Building Conservation Masterclasses tutor Jamie Fairchild.