What every building owner, architect, and estate manager should know about stone, brick, and responsible restoration. Written from site, not from a brochure.
The name comes from the grain of stone — the natural cleavage and texture that a mason reads before lifting a tool. It's a word used by quarrymen, stonemasons, and conservation officers. The Grain is our editorial resource: stone types, cleaning methods, common mistakes, and what working with a conservation officer actually looks like. Everything you need before picking up the phone.
The most-asked question in stone cleaning. Two heritage-approved methods, different applications, and the diagnostic process that determines which one goes on your building.
Read article → Common mistakesHigh-pressure washing on period stone causes damage that doesn't always show immediately. When it does, it's irreversible. Here's what happens and what to use instead.
Read article →The oolitic limestone that clads St Paul's, the Bank of England, and thousands of London terraces. A stone with a character, and specific requirements when it needs cleaning.
Read article → Brick typeThe yellow-grey brick of Victorian London. Softer than modern brick, acid-vulnerable, and routinely damaged by contractors who assume all brickwork is the same.
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