Australia · NSW list
Insulation and the gaps.
Heat leaves through the ceiling and the cracks. Insulation and draught-proofing change comfort first. Any bill effect depends on how you heat and cool.
Education only. SparkReady is not a lender and this is not credit advice.
01Ceiling insulation
It slows heat moving through the ceiling. In the NSW loan guidelines, ceiling insulation is an eligible upgrade. External insulation is excluded. Foil and foil-faced bulk products are excluded. An electrical safety check is required before anyone goes into the roof. Product rules live in the appendix. SparkReady is not a specifier.
02Draught-proofing
Windows and doors are on the published list. The guidelines appendix also groups external shading, chimneys, and exhaust fans with draught-proofing. The job is to stop conditioned air leaking. It does not generate electricity.
03The bill, without a number
Less heating and cooling load can mean fewer kWh. It does not replace a tariff check, and this page will not print a savings figure. If you borrow for it, the repayment is still a separate contract.
04Short answers
Ceiling insulation and draught-proofing are on the published NSW list, inside the program cap and the product rules. External insulation is excluded in the guidelines. Eligibility is the program’s decision, not ours.
No. Comfort and a smaller heating or cooling load are the point. A dollar figure needs your bill, your climate, and a proper assessment. The bill helper on this site is for solar and battery arithmetic, and it is still illustrative.