Field help: Thermal insulation of ceilings

In the case of the thermal insulation of top floor ceilings, the first-time installation, replacement or renewal of exterior building components of existing buildings are eligible for tax incentives. This includes, among other things, the insulation of the

• insulation of the top floor ceilings to undeveloped attics,
• basement ceilings,
• ceilings to unheated rooms,
• floor ceilings downwards against outside air,
• floor surfaces against the ground.