This is fleshed out in rishi sunak s summer statement on 8 7 20 in a separate document green homes voucher scheme available measures which can be found here.
External energy efficient doors replacing single glazed or solid doors installed before 2002.
They can be constructed of upvc aluminium timber or a combination of these materials.
High performance external doors can be solid partially glazed or fully glazed.
Heating controls and insulation including appliance thermostats hot water tank thermostats hot water tank insulation smart heating controls zone controls delayed start thermostats and thermostatic radiator valves.
If you re building a new home you should consider buying the most energy efficient doors possible.
If you have older doors in your home replacing them might be a good investment resulting in lower heating and cooling costs.
Fully or partially glazed doors will be either double or triple glazed with a thermal barrier sometimes called a thermal break between the panes of glass.
Energy efficient doors where you re replacing single glazed or solid doors installed before 2002.
Appliance thermostats hot water tank thermostats.
Heating controls and insulation including appliance thermostats hot water tank thermostats hot water tank insulation smart heating controls zone controls delayed start thermostats and thermostatic radiator valves.
Double triple glazing only if replacing single glazed windows secondary glazing in addition to single glazing external energy efficient doors replacing single glazed or solid doors installed before 2002 heating controls.
Hot water tank thermostats and insulation.
To be exact the scheme says secondary measures include upgrading to energy efficient doors where replacing doors installed prior to 2002.
New exterior doors often fit and insulate better than older types.