An internal wall insulation grant in Ireland may be available through an SEAI-supported home energy upgrade route, such as an individual upgrade or One Stop Shop, if the property and proposed works meet the scheme rules. You will generally need to apply before work starts and use an appropriately registered contractor where required. A technical assessment can help identify suitable insulation, ventilation and moisture-control measures, while a BER assessment may be needed to show the energy impact. Check the latest requirements on SEAI’s official website, as approval and grant levels depend on your individual circumstances.