Use the figures as a starting point.

Indicative information

The calculator and guides are general information, not a roof survey, quotation, financial recommendation, grant decision or guarantee of savings.

Third parties

Installers, suppliers and linked public bodies are independent. Check credentials, contracts, warranties and current scheme rules directly before committing.

Accuracy

We aim to show assumptions and source time-sensitive claims, but tariffs, schemes and market prices change. Replace defaults with your own current figures.