At Keystone Heritage Ltd, conservation doesn’t stop at the doorstep of a historic building, it extends to the landscapes, materials, and traditions that made these structures possible in the first place. As a company dedicated to the preservation of Britain's built heritage, we’ve always recognised that our craft is intrinsically linked to nature. This is why we’ve decided to support the Woodland Trust.

Homes with solid wall construction—typically built before the 1920s—were crafted using breathable, natural materials that worked in harmony with their environment. Without cavity insulation or modern damp-proofing, these properties rely on natural airflow and vapour permeability to regulate moisture and maintain structural health.

People get told so much different (often conflicting) information regarding the use of lime. The truth in the matter is this; if the building in question is constructed with solid walls (without a cavity) or damp proof course then it is a building that needs to breathe and should be treated accordingly.