Gwynne Anthony 2020

ART506 Dissertation 2019. Anthony Gwynne . 91 Figure 51: Vapour permeable warm roof solution (Source: Ty-Mawr, 2019). 8.0 Key findings 8.1 Background (i) Traditional buildings built with solid walls must have the ability to absorb and Release water and water vapour as humidity levels change through hygroscopicity and capillary attraction otherwise it cannot function as intended and traps water. (ii) Modern non-vapour permeable insulations and finishes are being inappropriately applied to upgrade solid stone vapour permeable walls. (iii) Inappropriate upgrading of traditional buildings has resulted in disastrous consequences of trapped moisture and rises in relative humidity levels preventing solid walls from drying out. This is causing deterioration of the building fabric, rotting of structural timbers embedded in walls and mould growth