Insulated Concrete Forms (ICF)
ICF construction uses expanded polystyrene (EPS) foam blocks filled with concrete to create walls with excellent thermal insulation properties. ICF walls can reduce cooling loads by 30% to 50% compared to conventional concrete block construction, making them highly suitable for Ghana's climate. ICF construction costs approximately 10% to 20% more than conventional construction but delivers significant long-term energy savings.
Reflective Roof Coatings
Applying reflective coatings to roof surfaces can reduce roof surface temperatures by 20°C to 30°C, significantly reducing the heat transferred into the building below. Reflective roof coatings cost GHS 15 to GHS 40 per square metre and can reduce air conditioning loads by 10% to 20%.
Low-E Glass
Low-emissivity (Low-E) glass coatings reduce the amount of infrared and ultraviolet light that passes through windows without significantly reducing visible light transmission. In Ghana's sunny climate, Low-E glass can reduce solar heat gain through windows by 40% to 70%, dramatically reducing cooling loads in glazed buildings.
Compressed Earth Blocks (CEB)
Compressed earth blocks offer excellent thermal mass properties, absorbing heat during the day and releasing it at night. CEB construction is particularly effective in Ghana's northern regions where diurnal temperature swings are more pronounced. CEBs can be produced locally from Ghana's abundant laterite soils, reducing embodied carbon and transportation costs.
Architect Afrique's Material Specification Approach
We conduct detailed thermal performance modelling for every project, using simulation software to optimise the building envelope for Ghana's specific climate conditions. Our specifications balance initial cost, long-term performance, and local availability to deliver the best value for our clients.
