RETAINING THE HEAT IN YOUR HOME –
Understanding your home: Air Flow
The Building Envelope and Airflow
During winter, the warmer air inside is forced out of the building envelope. It carries heat and moisture , whilst incoming air will bring in drafts and dry winter air. For the air to move from one side of the envelope to the other, there will be holes in the envelope and the difference in air pressure between the inside and outside. The difference in the air pressure will result from any combination of temperature difference (that creates a stacking effect in the home), wind or combustion appliances.
Combustion and Ventilation Effect