Original state

Retrofitting strategies

Space intervention

Wall

Brick-concrete structure without insulation

Cavity insulation

Internal insulation

External insulation

Replace/repair exterior finish coat

Ventilated facade

Window

Single-layer glazing, wooden frame, no seal

Second single/double glazing

Replace with double/triple glazing

Fixed shading

Adjustable shading

Enlarge hole

Roof

Insufficient insulation

Asphalt insulation

Top floor panel insulation

Flat roof insulation

Green roof

Flat to slope roof

Balcony

Unclosed balcony, independent board, no insulation

Balcony board insulation

Remove/replace balcony

Covered with single glazing

Covered with double glazing

Floor

Crushed stone concrete floor, no insulation

Insulation on top of floor panel

Insulation on bottom of floor panel

Retrofitting strategy icon

Layer

strategies

icon

Wall

External insulation

Window

Double layer glazing

Roof

Upright flat roof insulation

Balcony

Wrap double glazing

Floor

Add insulation on the top