Batroun, Lebanon

Casa Batroun

Renovation and extension of a private family house using bioclimatic passive building techniques. An award-winning project with BREEAM Excellent certification.

Project info

Construction phase
Mixed of new construction or refurbishment
Building type
Single Family House (SFH)
Detailed building type
Single Family House (SFH) - detached
Net floor area
172 m2
Stories
2 stories
Construction type
Mixed construction
Original construction year of the building
2014
Project contact
Maya Karkour
Contact email address
maya@ecoconsulting.net

Project team

Developer(s)/owner(s)
Private Family
Architect(s)
Maha Nasrallah
Energy efficiency consultant(s)
EcoConsulting
HVAC consultant(s)
Mechanica
Building services
Mechanica

Building Rating and Certifications systems

Rating and certifications systems
BREEAM

Building Envelope

External walls

Description of construction
GF Stone wall: lime-based paint, 20mm clay plaster, 80mm wood fibreboard insulation, 250mm sandstone FF Timber wall: lime-based paint, 20mm clay plaster, 80mm wood fibreboard insulation, 50mm air layer, 20mm Accoya cladding
U-Value
0.416 W/(m²*K)

Roof

Roof type
Flat roof
Description of construction
Flat Roof: 22mm OSB, 20mm wood fibreboard insulation; 130mm Sheep wool, 22mm OSB, air layer, Accoya decking. Green Roof: 20mm Clay plaster; 22mm OSB, 130mm Sheep wool, 22mm OSB, 100mm soil
U-Value
0.225 W/(m²*K)

Openings and windows

Glazing type
Double glazed
U-Value glass
2.239 W/(m²*K)
Frame material / description
Wood
Description of construction
4 clear-12 air-4 low-e

Basement floor

Description of construction
50mm flooring screed, 150mm concrete slab, 25mm stone chippings, 750mm clay underfloor

Technical Building Systems

Ventilation system

Type of ventilation
Free ventilation (windows)
Description
Natural cross ventilation strategy with ceiling fans in some rooms

Space heating system

Primary Space heating system
Biomass boiler (pellet, logwood, woodchip etc.)
Description
Wood pellet stoves

Water heater system

Primary water heater system
Solar Thermal collector on the roof
Description
Vacuum tube solar system

Lighting system

Primary lighting system
LED (Light emitting diode lamps)

Shading devices

Type of shading system installed
Static (fix) shading systems as part of the building architecture (e.g. Maschrabiyya, porch roofs, pergolas)
Description
Window setbacks and overhangs

Final Energy Demand

Energy carrier (1)
Electricity
Energy carrier (2)
Biomass
Annual lighting demand
6.6 kWh/(m²*a)
Annual hot water demand
3.35 kWh/(m²*a)
Total specific final energy demand
23.6 kWh/(m²*a)

Financial Aspects

Financing sources
Own