Vale Energy Assessors

 Most cavity walls of 50mm or more can be filled. Homes built after the early 1980's normally have Cavity Wall Insulation as standard.

For the occupier, the benefits of Cavity Wall Insulation include cheaper fuel bills and greater comfort, with heat loss through the walls being reduced by up to 60%. After Loft Insulation, Cavity Wall Insulation the most cost-effective insulation measure.Installing Cavity Wall Insulation when replacing a new heating system is a great idea because it reduces heat loss and thus potentially allows a smaller and cheaper heating system to be specified.

Always look for an Installer recomended by CIGA.( Cavity Insulation Guarantee Agency )http://www.ciga.co.uk. Before the insulation is installed a pre-installation inspection is undertaken to assess the walls suitability including the exposure of the wall to driving rain, masonary materials used and pointing of the masonary.It is recomended that cavities of less than 50mm are not filled. Any defect or dampness problems should be put right before work begins. When this is satisfactory the installation process proceeds as follows.

Injection holes are drilled through the mortar joints at approx 1 metre intervals.    

Cavity barriers are installed to prevent the fill from entering the cavities of adjacent properties.

Air ventilators that cross the cavity are sleeved.

The Insulant is injected into the wall cavity.

Quality checks are carried out on the fill material prior to making good the injection holes.

Injection holes are filled with colour-matched mortar or render.

The National Insulation Association http://www.insulationassociation.org.uk holds a register of proven systems and installers. Your local Energy Saving Trust. http://www.est.org.uk/myhome can give you invaluable advice on energy saving and grant information. Call 0800512012 to find your local Energy Efficiency Advice Centre.

Did you know that the heat loss through an uninsulated solid wall is typically more than double than of an uninsulated cavity wall. A solid wall can be insulated in two ways, internally or externally.

Internal Insulation

Is cheaper than external Insulation.

Is suitable for experienced DIY enthusiasts.

Externall wall appearance is maintained.

Easier to install than exterior cladding

Room surfaces warm up quickly, so internal insulation is well suited to houses only in the morning and evening.

Will reduce the room size.

Can be disruptive to the Tenants.

Skirting Boards, door frames and electrical fittings need to be repositioned.

External Insulation.

Is easy to install and can be applied without disruption to Tenants.

Improves airtightness of the building which reduces draughts.

Room surfaces heat up slowly, so it is better for homes that are heated all day.

Large amounts of Insulation can be used without reducing living space.

Renews aging fascades and increases the life expency of the building.

May require alteration to rainwater goods and sills.