If your walls could speak, they’d likely warn you about hidden damp before mould or peeling paint appears. Excess moisture inside walls isn’t just inconvenient it can damage plaster, cause timber rot, and weaken the building’s structure. Left untreated, damp can lower your property’s value and trigger costly repairs. Thankfully, a simple moisture meter (also called a damp meter) helps... https://www.damp2drysolutions.co.uk/blogs/what-moisture-percentage-is-acceptable-in-walls/