What improvements can I get?
Vouchers must be used to install at least one primary home insulation or low carbon heating measure.
If you choose to install at least one of the primary measures, you can use your voucher to help cover the cost of secondary measures.
The grant for the secondary measure is capped at the value of the grant provided for the primary measures. For example, if you receive a £400 voucher for a primary measure such as a cavity wall insulation, you will be able to receive a maximum of £400 for a secondary measure such as an energy efficient replacement door.