The use of insulation makes it possible to keep a building cooler in the summer and warmer in the winter without running up energy costs. That is because the product is designed to resist heat flow. The circulation of heat, or heat flow, always moves from an area that is warm to colder zones.
As a result, heat flow is what causes a building to feel colder during the winter or warmer in the summer. In the winter, the heat from the inside of a building tends to move outside whilst the outside heat in the summer time tends to migrate inside.
Heat Transfer Methods
Heat flow occurs by way of one or more of the following transfer methods:
- Conduction heat transfer happens when the molecules in one material move more quickly than they warm up. A good conductor of heat is stone whilst insulation is a poor conductor.
- Radiation heat transfer occurs through electromagnetic means, or by the transfer of infrared light. For instance, when black tarmac absorbs heat on a hot day, this is an example of radiation heat transfer. A foil-backed insulation is the best product to use to reduce this type of absorption in a building.
- Convection heat transfer happens through the movement of a gas or liquid. Convection is the reason why a building cools quickly when it is windy outside. To ensure against heat loss in this respect, it is important to make sure that a structure is well sealed.
What Statistics Reveal
Various types of insulation have different levels of effectiveness. If a building is uninsulated, it loses approximately 35% of lost heat through the walls and 25% through the roof. The heat that escapes through the floor falls at around 15%. If most UK property owners installed sufficient insulation in the roof alone, the savings would amount to around £700 million annually. Additionally, about four million tonnes of CO2 would be removed from the environment.
To reduce energy costs, a space-age insulation has been developed that is represented by a multi-layer foil product. The insulation is designed for bespoke designs as well as for walls, flooring, and roofs. The multi-foil product lowers heat transfer as follows:
- Radiation heat transfer is reduced by the inclusion of low-emissivity foil layers.
- Loft and foam layers safeguard against conduction heat transfer.
- The insulation supplies a barrier against air movement, thereby controlling air leaks.
Bubble Foil Insulation
Another space-age insulation is made with bubble foil. This affordable, lightweight product is comprised of a layer or layers of bubbles made of polyethylene. The product includes a foil facing on one or both of its sides.
The bubble foil product is often selected by property owners who are seeking insulation that can be installed quickly and is flexible. This installation is frequently installed in garages or sheds.