Detached EFH, single-storey with flat roof - Efficiency House 115

Object data

Measures	U-values (W/m²K)		Description
Measures	Before	After	Description
Flat roof with low insulation	0.51	0.16	Flat roof insulated with 30 cm EPS WLG 035
Double glazing, plastic/aluminum windows	3.0	0.85	Plastic windows, triple thermal insulation glazing, roller shutter box replaced
Exterior wall, masonry HBL without insulation	1.3	0.17	Thermal insulation composite system 16 cm (WLG 035)
Basement wall against soil	1.85	0.2	Perimeter insulation, 16 cm (WLG 035)
Floor slab	4.0	0.47	Wooden construction with mineral wool 60 mm 035

Measures	before	after
Heating/hot water via district heating	Controlled circulation pump, poorly insulated pipes, no hydraulic balancing	Controlled circulation pump, well-insulated pipes, hydraulic balancing carried out
Ventilation	Ventilation via windows and vents	Ventilation via decentralized ventilation units with heat recovery
Heat transfer	Radiators, 2K thermostatic valves	Radiators, new 1K thermostatic valves

Measures	before	after
Primary energy demand	222 kWh/m²a	76 kWh/m²a
Final energy demand	550 kWh/m²a	199 kWh/m²a
Specific transmission heat loss	1.08 W/m²K	0.387 W/m²K
CO2 emissions	225 kg/m²a	83 kg/m²a