Penetrating damp is a common issue that affects brick, stone, and masonry buildings. One of the signs of penetrating damp is the presence of damp patches on interior surfaces, but it can also manifest through exterior efflorescence and eroded weather-facing surfaces. It is crucial to maintain dry conditions in buildings to ensure their longevity, functionality, and energy efficiency. Research has shown that saturated brick, stone, and masonry materials can have up to 50% worse thermal resistance compared to dry materials. Additionally, saturated structures are more prone to material decay, rot, and mould growth. To address penetrating damp problems, a masonry protection cream has been developed. It is designed to prevent moisture penetration through the exterior walls of buildings. The process of resolving penetrating damp involves three main stages: preparation, protection, and enhancement.