With any building work or restoration there is likely to be waste materials in the process, so who is responsible for removal of them?
In September 2015, the United Nations General Assembly adopted the 2030 Agenda for Sustainable Development that includes 17 Sustainable Development Goals (or SDGs). By 2050 all dwellings must comply to Passivhaus standards of 90% cost savings and 80% carbon reduction as directed by the UN.
A Cavity wall is a type of wall with a space between its two inner layers which can be of different materials.
Many problems with cavity wall insulation can appear two or three winters after the installation so it may not be immediately apparent that a damp spot or internal wall damage is the result of bad cavity wall insulation.
If your home was built after the 1920’s chances are it’s got cavity walls and unless it was built since the mid 90’s those cavities are probably empty.