Glossary
| absolute humidity | a measure of moisture in the air, regardless of temperature |
| ATTMA | Air Tightness Testing and Measurement Association |
| BER | building energy rating |
| BREEAM | Building Research Establishment Environmental Assessment Methodology |
| breathable | the capacity and the requirement for traditional built fabric to ‘breathe’ allowing the permeation of vapour between external and internal environments |
| CBO | Church Buildings Officer |
| CEN | Comité Européen de Normalisation |
| CHP | combined heat and power |
| cortile | (Italian) an internal court |
| DAC | Diocesan Advisory Committee |
| DECC | Department of Energy and Climate Change |
| dew point | the temperature to which the air would have to cool (at constant pressure and constant water vapor ... |
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