Glossary
What are Acoustics?
Last Updated: 21 August 2025Acoustics is the branch of physics concerned with the production, transmission, and effects of sound. In the context of building design, acoustics focuses on creating spaces that manage sound effectively to ensure comfort, functionality, and well-being for occupants. Acoustics in buildings is a critical aspect of architectural design, particularly in the UK’s residential, retrofit, and...
What are Air Changes per Hour (ACH)?
Last Updated: 21 August 2025Air Changes per Hour (ACH) is a measure of how many times the air within a room or space is completely replaced with fresh air in one hour. It is typically expressed in units of m³/h (metres cubed per hour) or l/s (litres per second). ACH is a critical metric in assessing ventilation efficiency, particularly...
What are Airflow Rates?
Last Updated: 21 August 2025Airflow rate refers to the volume of air that moves through a ventilation system, duct, or opening within a specific time period. It is typically measured in litres per second (l/s) or cubic metres per hour (m³/h). This measurement is critical in ensuring effective ventilation, which is essential for maintaining indoor air quality, controlling humidity,...
What are Bioeffluents?
Last Updated: 21 August 2025Bioeffluents refer to the airborne contaminants released by human occupants in indoor environments. These include carbon dioxide (CO₂), moisture, volatile organic compounds (VOCs), and other by-products of human metabolism and activities. In the context of UK house building, residential retrofits, and home renovations, managing bioeffluents is critical for maintaining indoor air quality (IAQ) and ensuring...
What are Building Regulations?
Last Updated: 21 August 2025Building Regulations are a set of statutory minimum standards for the design, construction, and alteration of buildings in the UK. They ensure the health, safety, welfare, and convenience of building occupants, as well as energy efficiency and sustainability. These regulations are enforced by local authorities and approved inspectors, and compliance is mandatory for most building...
What are Capital Works?
Last Updated: 21 August 2025Capital Works refer to significant construction or renovation projects that involve major upgrades, replacements, or extensions to a building’s structure or systems. These works typically require substantial investment and are often undertaken to improve the functionality, safety, or energy efficiency of a property. Examples include roof replacements, structural alterations, or the installation of new heating...
What are Carbon Credits?
Last Updated: 21 August 2025A carbon credit is a tradable certificate or permit that represents the reduction or removal of one metric tonne of carbon dioxide (CO₂) or its equivalent in other greenhouse gases (GHGs) from the atmosphere. These credits are part of carbon trading schemes designed to incentivise emission reductions and support climate change mitigation efforts. In the...
What are Carbon Emissions?
Last Updated: 21 August 2025Carbon emissions refer to the release of carbon dioxide (CO₂) into the atmosphere as a result of human activities, such as burning fossil fuels (coal, oil, and natural gas) for energy, transportation, and industrial processes. These emissions are a significant contributor to the greenhouse effect, which traps heat in the Earth’s atmosphere and leads to...
What are Communal Areas?
Last Updated: 21 August 2025Communal areas refer to shared spaces within a residential building or housing development that are accessible to multiple occupants, typically found in social housing, apartment blocks, or multi-occupancy dwellings. These spaces are maintained collectively and serve functional, social, or accessibility purposes. In UK social housing, communal areas include: Corridors & stairwells – Essential for fire safety...
What are Day-to-Day Repairs?
Last Updated: 21 August 2025Day-to-day repairs refer to minor maintenance tasks and fixes that are necessary to keep a property in good working order and ensure the comfort and safety of its occupants. These repairs are typically reactive, addressing issues as they arise, and are distinct from planned maintenance or major refurbishments. In the context of social housing, day-to-day...