External wall insulation

Help reduce your energy bills by up to €600 a year

External wall insulation is a layer of insulation fixed to the outside walls of your home and covered in a special type of plaster or cladding. Houses built before 1920s usually have solid rather than cavity walls. Solid walls tend to let more heat escape from the home than cavity walls. External wall insulation helps reduce the heat travelling through your home's walls helping you reduce your fuel bills and helping to make your home warmer in winter and cooler in summer - the new weatherproof coating can help enhance the look of your home.

External wall insulation involves fixing a layer of insulation material to the wall, then covering it with a special type of render (plasterwork) or cladding. The finish can be smooth, textured, painted, tiled, panelled, pebble-dashed, or finished with brick slips.

Alternatively, green deal internal wall insulation IWI can be applied using ready-made insulation/plaster board laminates, or other methods. Thicknesses of internal or external insulation typically range between 50 and 100 mm.

Before and after