Absorption Imbalance

This term highlights a scenario where two surfaces, made from different materials in a wall, absorb and retain varying amounts of moisture vapour. This can lead to water condensing and becoming trapped under the least permeable (least breathable) layer. In severe cases, it can result in calcium sulphate salts crystallising and blistering under the surface of the most permeable material, typically along the interface between the two materials. This issue can arise from inappropriate damp proofing treatment against rising damp.

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