Homeowners often ask if they must insulate walls before applying for window or door grants. SEAI logic focuses on overall building performance and eligible upgrade packages.
Insulation first?
Wall insulation may not always be mandatory for every window grant route, but improving the fabric first usually delivers better comfort and BER outcomes. External wall insulation is a whole-surface upgrade that pairs well with later opening improvements.
Get property-specific advice
BER baseline, wall type and existing upgrades all matter. Use our photo quote — Eircode and photos — so we can flag what is realistic for your home before you commit to any grant application.
