Cavity Wall Insulation Problems That Can Arise If Badly Installed
A product called “urea formaldehyde” was commonly used as insulation (in the early days), which is a type of foam injected into the cavity. Over a number of years, urea formaldehyde undergoes degradation and can become harmful to your health through a combination of gas released from the degrading foam and damp that breaches the cavity.
Structurally unsuitable houses – these properties are often steel or wooden framed properties. Additionally it can be argued that, if a property is constructed from brick and the condition of the mortar or brickwork is in a poor state of repair or the property is exposed to wind driven rain, then these cases are also seen as inappropriate properties from the perspective of installing cavity wall insulation.
If the cavity wall insulation has been poorly installed ie insufficient amounts of product being used, leading to gaps and cold spots, this in turn can cause areas of intermittent damp and random patches of condensation.
If the product installation guidelines are not followed this can also lead to gaps and cold spots. Over time there may also be incidences of slumping, where gravity encourages the product to drop and this leads to cold spots on the upper floors of the property.
There are many reasons why cavity wall insulation may need to be removed;
- when the product used is no longer providing insulating properties following time related degradation i.e. urea formaldehyde
- when the insulation may have been fitted in an inappropriate property
- when the insulation may have been fitted poorly
- when the insulation may have been subject to driving rain