What improvements can you make?
In order to claim any vouchers, property homeowners need to also be installing insulation or low carbon heating at the same time.
Those who already have those features in their home can get top ups, such as additional loft insulation.
However, the vouchers can not be used to replace what is already in the property.
This means it is unlikely those who have recently made those renovations will be able to benefit.
If making one of the above changes, homeowners will then be able to use the voucher for other improvements.
source: express.co.uk