Insulation and the EPC certificate
To get a reliable assessment of how energy-efficient your house is, look at its energy performance certificate (EPC).
The EPC gives you an estimated energy cost, plus an official energy efficiency rating in bands A-G. It’s an indicator of your property’s energy efficiency.
If you don’t have a copy of your EPC, or it’s expired, use the Simple Energy Advice postcode finder to find the most recent certificate. The service is free to use and available to everyone.
If your property is well insulated, your EPC certificate will have an energy-efficient rating and it’s not likely you’ll need to use the grant to insulate your home.
However, a low rating could suggest your property is poorly insulated throughout, or in critical heat-loss areas, like the roof.