Condensation occurs when air-borne moisture meets a cooler surface and “condenses” into liquid. When this occurs in a building, the resulting dampness can encourage the growth of mould. Without
External Wall Insulation, internal wall temperatures are a lot closer to the temperatures of the external surfaces, i.e. they are cold enough to encourage condensation. Choosing External Wall
Insulation reduces this risk by helping to raise the temperature of the internal walls.
[wall-insulation-EWI_Explained_Mould] The great advantage of external wall insulation over (e.g.) internal wall insulation is that it removes the dew point to the outside of the building – this
means any interstitial condensation can only occur outside the fabric of your building.
If the exterior of your home or business is cracked or in poor repair, water could be travelling through the walls to the inside of your rooms. External Wall Insulation provides a waterproof,
protective barrier and will seal your building against the elements.