Over 6 million properties in the UK have had insulation measures installed through various energy saving initiatives. With over 7 years experience in the industry we have found that a significant number of these properties have not seen the added benefits these energy saving measures should have delivered. In some cases, we have found that the fabric of some properties have suffered as a result of having the measures installed.
There is no doubt that cavity wall insulation and loft insulation installed properly can help homes become more energy efficient. However, there are a number of reasons why the installation of these measures could have detrimental effects on properties. Some of the reasons are listed here:
Cavity Wall Insulation
• Cold spots – insulation material not installed to the correct density throughout
• Property exposure – the property being exposed to driving rain may cause it to
be unsuitable for some materials.
• Property build type unsuitable – non-traditional build properties should not be
installed with cavity wall insulation material.
• Condition of the property – breached damp proof course (DPC), blown
(bossed) render, blocked or leaking guttering, defective seal around windows
or doors, flaking mortar beds, etc. This list is not an exhaustive list, each
property should be assessed on its own merits.
• Properties with Urea-formaldehyde foam installed – this material can
breakdown and is not covered by the BBA licenses and is not covered by the
25 year guarantee from CIGA.
• No or not enough ventilation – lack of air flow in the loft space can cause a
build up of condensation causing damage to the structure of the roof over time.
• Damaged or contaminated material – existing loft insulation material damaged
by a leaky roof or by other trades disturbing the insulation in your attic can also
cause thermal difference between the living area below and the attic space.
This can cause marks to appear on the ceiling and decorations of the affected
• Insulation material on the apex and on the floor of the attic – insulation board
on the apex of roofs as well as insulation on the floor on the attic can also
cause problems with condensation in the roof space which can cause damage
to the roof structure over time.
• Poorly installed insulation – poorly installed insulation can cause a number of
problems both inside the roof space and in the living area of the property.
These normally present themselves as marks on ceilings appearing or
condensation appearing in the loft space.
Cavity Wall Insulation