Gwynne Anthony 2020

ART506 Dissertation 2019. Anthony Gwynne . 37 Figure 10: Extract of ground supported floor construction diagrams in Approved Document C and how they trap water (Source: www.gov.wales/buildingregulations-approved-documents) . Extracts of modern ground floor details contained in ADC and reproduced in Figure 11 does not specify the external or internal protective system or insulation system to be used. This can lead to non-vapour permeable systems being inappropriately fixed to vapour permeable brick, stone or cob walls, increasing the risk of condensation behind the insulation layer, trapping moisture and pushing it towards the internal face of the building. This could lead to unintended consequences (King and Weeks. 2016) including: • Overheating – heat can no longer be buffered by the walls; • Increased relative humidity, associated damp and mould growth; • Reduction in indoor air quality; • Short term concentrations of volatile organic compounds (VOC’s); • Elevated radon gas concentrations; MTttt Damp is trapped and pushed to outside walls Damp is trapped and pushed to outside walls Damp is trapped and pushed to outside walls Damp is trapped and pushed to outside walls MTttt Key: Damp