Project: Single storey 4-bed high performance, low energy-use house
Location: Hawkinge, Kent
Project period: 34 weeks
Completed: Early 2017
Architect: CL Architects, Folkestone
Built on the edge of an old airfield, this single storey low-level Timber Frame house was designed to sit behind an earth bund and blend in with the surrounding countryside. The roof is finished with Sedum matting and the walls are clad with a Larch tongue & groove system.
The South-facing wall is made up from a series of full height triple glazed French doors and bi-fold sets leading out into the garden from all the main rooms. Solar shading of the South wall windows is by a timber Brise Soleil structure extending over the decking from the roof, which runs the full length of the building.
The building was constructed as panels off site, which were craned in to place to complete the basic structure within a matter of days. The roof structure is made up from Glulam beams which were designed to be externally visible where they protrude over the decking and also serve to support the Brise Soleil.
Internally, flexible spaces are divided by sliding pocket doors and the arrangement keeps all the bathrooms to the North face of the property in order to maximise light from the deck into all the more frequently inhabited spaces. The North facing rooms have high-level windows and roof lights to maintain privacy from the road. Being a single storey building, one under floor heating system, run from an Air Source Heat Pump, caters for the whole house.
Energy Efficient elements, which contribute to an EPC-rating of A96, include:
- Triple glazed windows throughout, shaded by a Brise Soleil structure to the South elevation
- Provision of 200mm thick insulation to the walls and roof, giving a thermal insulation value of 0.12 W/m²K
- An 8.8kW Air Source Heat Pump
- Under Floor Heating throughout
- Independent sewage treatment plant
- Rainwater harvesting tanks
- 4kW Solar PV system with an Immersun power diverter to heat water
- An air-tightness value of 3.8 m³.h-¹.m-² @ 50 Pa
We are pleased to have worked with CL Architects on this project: http://www.clarchitects.co.uk/