Internal vs. External Wall Insulation: Which is Best for Your Property?

internal vs. external wall insulation

Insulating your property is one of the best ways to improve its energy efficiency and reduce your heating and cooling costs. You can choose between internal and external wall insulation, but it is very important to choose after having considered everything.  So if you are trying to understand the differences between internal vs. external wall insulation, this is the article for you. Make sure to check out Insulation Cyprus and find out more.


External wall insulation is less disruptive than internal wall insulation because the work is done on the outside of a house or shop and it does not affect the people living or working in the specific building. Moreover, many things need to be moved during internal wall insulation. These include light switches, sockets, decorative features and more.


Internal wall insulation is usually done in specific rooms while external wall insulation is done on the outside surface of a whole building. With this in mind, internal wall insulation should cost less but, in the end, it usually costs more due to the additional costs of potential redecoration and other works that may be needed.


With external wall insulation, the space of a property does not change because the insulation is installed on the outside, thus not using indoor space. However, with internal wall insulation, the indoor space of a building decreases because the walls take up more space after the installation of the insulation material.  


External wall insulation has a better thermal performance than internal wall insulation, but this depends on many factors. Each building has different needs and insulation acts differently in every building.


Unlike internal wall insulation, external wall insulation contributes to keeping a building safe and protected from various weather conditions that could otherwise damage the outside of it.


External wall insulations improve the appearance of the outside of a building giving it a smoother finish and a better look in general. Most of the time internal wall insulation requires more work on the walls and the rest of the room. However, internal wall insulation is a great solution for old and preserved houses because their outside appearance must stay as it is. Therefore, internal insulation is ideal for such houses. Many people combine internal wall insulation with a house renovation.  

Both internal and external wall insulation have their advantages and disadvantages. When deciding which type of insulation is best for your home, you will need to consider many factors. Of course, there are times when external or internal wall insulation and vice versa is not suitable for some properties. You will need to consult the professionals.