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Building Regulations and Other Guidance
Part A Structure
Part B Fire Safety
Part C Site Preparation and Resistance to Contaminants and Moisture
Part D Toxic Substances
Part E Sound
Part F Means of Ventilation
Part G Sanitation, hot water safety and water efficiency
Part H Drainage and waste disposal
Part J Combustion appliances and fuel storage systems
Part K Protection from falling, collision and impact
Part L Conservation of fuel and power
Part M Access to and use of buildings
Part O Overheating
Part P Electrical safety
Part Q Security
Part R Physical infrastructure for high-speed electronic communications networks
Part S Infrastructure for the charging of electric vehicles
Air Leakage
Regulation 7 Materials and Workmanship
Radon
Building Energy Rating: EPC
Energy Efficiency & Renewable Energy Systems
Timber Frame Construction
Acceptable Construction Details
Typical Inspection Reports
Air Leakage
Definition and reduction
Air leakage is classed as the uncontrolled ingress and egress of air through imperfections in the construction of the building envelope of the dwelling. Air tightness is also another term used when describing air leakage. It is normally measurable in terms of air permeability.
Minimizing the uncontrolled air leakage of heated air can have a number of positive benefits by eliminating the following issues that air leakage cause:
Less occupant discomfort. Air leakage can also result from draughts, which would affect the dwelling's interior temperature.
A possible by-product of the leaking air affecting the interior temperature of the dwelling is increased energy consumption to regulate the correct temperature, thus having a direct financial implication.
Air leakage can cause condensation. As warm air escapes through the building material into a wall cavity, it will cool and give rise to condensation.
Factors affecting leakage rate
The rate of air leakage depends on a number of factors including:
Wind speed
Temperature difference between the inside and outside of the dwelling
Temperature inside the dwelling
Air permeability of the dwelling
Exposure conditions