SR227 Wall retrofits in housing - market potential and cost-benefits (2018)

The retrofitting of insulation to housing has received renewed interest over the last year due to the government Heat Smart programme subsidising retrofits to ceilings and floors, the provision of efficient heating appliances and other efficiency measures.

The retrofit of walls is not included in this programme, mainly because of the quite high cost, and in many cases, the cost-benefits are not favourable. This report analyses the benefits and costs of wall retrofit and identifies the situations where this retrofit is cost-effective.