One of the biggest problems in a property, aside from the loss of heat and an inconsistent temperature throughout your home, is the risk of condensation.
Condensation is the result of differences in temperature between both the internal walls and external walls and windows of the property where warm moist air in your property condenses on cold external surfaces.
When there is too much condensation that is not being dealt with, there is a chance that this can cause mould to grow and spread. Mould growth is closely connected to the humidity levels and air temperature in your property. Therefore, when you increase the insulation your home has, the temperature on the surface of the walls in the building will be much higher than without it, thus reducing the risk of mould forming and then eventually spreading.
The problem of mould is one that should not be underestimated, as it is not only responsible for affecting the aesthetics of your home and the structural integrity, but also affects the quality of the internal air. This can then present health complications, especially if anyone in your household has an allergy to mould.
External wall insulation therefore reduces the likelihood of condensation in the property. It can also help prevent damp wall with its weatherproof coating. You can get top coat silicone renders, for example, that provide a hydrophobic 100% waterproof layer of protection for external wall insulation.