What you need to know about how heat moves through walls, floors, and roofs

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Updated: Feb 13, 2022

To keep your home comfortable and energy-efficient, it is important to understand how heat moves through walls, floors, and roofs. Heat travels in three ways: conduction, convection, and radiation. In this blog post, we will discuss each of these methods and give you some tips on how to prevent heat loss in your home.


With conduction, the transfer of heat through direct contact occurs between two objects. This happens when the warm air molecules meet the cooler surface of a wall, floor, or roof. The warmer molecules will travel to the colder surface and create a diffusion of energy, which gradually warms up the entire object. One way to prevent heat loss through conduction is to add insulation to your walls, floors, and roof.


Convection is the transfer of heat through the air or liquid currents. This happens when the warm air or liquid molecules meet a cooler surface. The warmer molecules will create a buoyant force that causes the hot air or liquid to rise, while the cooler molecules will fall. This process creates a convective current, which transfers heat from the warmer to the cooler object. Therefore, it’s important to install insulation around your air ducts and water pipes to prevent heat loss through convection.


Radiation is the transfer of energy in the form of electromagnetic waves. This happens when an object emits or absorbs energy from another object without any contact between them. The energy is transmitted in the form of infrared radiation, which is invisible to the human eye. One way to prevent heat loss through radiation is to install insulation on your walls and roof. This is also important for health purposes.

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