Transcription of Retrofit Internal Wall Insulation
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September 2021 Retrofit Internal Wall InsulationGuide to Best PracticeTechnical authors from Enhabit: Dr Sarah Price (lead), Elena Andreou, Tim Wilcockson, Konstantinos Megagiannis, Nuria Lopez2 Contents Glossary .. 3 1. Introduction .. 5 2. Benefits .. 8 3. Building Regulations .. 9 4. Building suitability assessment & risks .. 11 5. Materials .. 25 Material Conformity .. 25 6. Design Principles .. 27 Thermal bridging .. 27 Airtightness layer .. 29 Moisture management .. 29 Joist ends .. 32 Ventilation .. 32 Interaction with other measures .. 32 Less than 100% IWI installation.
CWI – Cavity wall insulation. Insulation that is installed in a cavity within an external wall. Usually between two masonry structures that are tied together. EWI – External wall insulation. Insulation that is installed on the cold side of a wall . Hygrothermal – Refers to the movement of moisture and heat through buildings and building ...
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