*MODERN SUSTAINABLE HOME DESIGNED BY AWARD WINNING ARCHITECTS* Partridge Walk is a ground-breaking, new development, which epitomizes the future of sustainable building and modern living in an elevated setting, overlooking Poole Harbour.
The house combines contemporary architecture with modern construction techniques and materials, creating environmentally friendly, fully sustainable, thermally efficient properties. This is the future of modern housing.
Sustainability is at the core of every facet of these modern and innovative homes, creating environmentally sound properties, which will sustainably derive all their energy requirements – and more. The developers are committed to reducing carbon emissions to deliver carbon negative homes.
The houses span three floors: – Ground floor, accessed from street level via the front door, leads into the entrance hall with ground floor W/C and access to the integral garage. Two double bedrooms with en-suite facilities face west over the rear garden. A central staircase winds up and down through the core of the building, allowing natural light to radiate over the three floors from an automated roof light enabling access to the top floor for maintenance.
Lower ground floor has a further two en-suite, double bedrooms, which have direct access on to the garden.
The houses have been designed and sited to best practice passive design principles. The houses benefit from an east/west orientation, which provides high levels of day lighting throughout the day thus minimizing the need for artificial light. Protective shading from the summer sun is provided by the expressive, roof overhangs at first floor whilst maximizing solar gain in the winter months.
A 6KW photovoltaic solar panel system is proposed at roof level set behind a low parapet on each house. The power generated by the system is stored by a ‘Tesla Powerwall v2.0’ that will run the ‘Smart Building System’; a holistic automation system that allows the building services to communicate with each other wirelessly throughout the property via Bluetooth 5, providing essential energy saving feedback to a live server to continually evaluate the energy needs of the building, adjusting levels accordingly to optimize energy savings. The ultimate outcome being, no energy bills to the owner and zero impact on the local infrastructure. The system design will far exceed the required minimum 10% renewable energy generation required by Policy PP37.
The compact rectilinear form creates an efficient building envelope with a low surface to volume area, which minimises heat loss. The North elevations are unglazed and well insulated adding to the thermal efficiency.
The plant room, located on the lower ground floor, is the nerve centre of the house. An ‘Exhaust Air Heat Pump System’ extracts warm, stale air from the bathrooms, kitchen and utility room passing through a series of ducts running within the floor and walls.
The Innovation Award winning boiler units utilised are industry leading, innovative hot water supply systems which use a built-in Air Source Heat Pump to scavenge waste heat and make domestic hot water heating highly efficient offering a saving of up 75% of the average homes cost. This high performance heat pump uses considerable less energy than traditional water heating methods. Connecting to the solar energy generation will achieve the highest levels of energy efficiency (A+++), furthermore increasing substantially energy cost savings.
Demand Controlled Ventilation (DCV) system involves ventilating and conditioning the air in the house to meet needs of the occupant. Movement Detector Technology, using passive infrared or ultrasonic sensors, determining the presence of the occupants. The concept of Demand Controlled Ventilation rests on the principle of providing residents with the right amount of fresh air, when they need it. With intelligent airflow management, energy savings are made whenever there is little or no the need for ventilation, which in reality, is a significant amount of time. Conversely, an activity, which emits indoor air pollution, such as preparation in a kitchen, a shower, or even the release of odorous metabolic compounds, generates a need for greater ventilation to remove the pollution quickly. When a main room is occupied, its relative humidity increases; the air inlets then open more to increase airflow and better evacuate stale air.
Activity in wet rooms (kitchen, bathroom, toilet, etc.) is accompanied by water vapour emissions; the opening of the exhaust units increases with the relative humidity, increasing the airflow and so evacuating polluted air more rapidly. The higher relative humidity generated by breathing and activity in the kitchen or shower, can lead to destructive condensation, in which moulds can grow. When the relative humidity increases dangerously, the DCV unit opens quickly to evacuate excess moisture and eliminate the risk of condensation. Ventilation is often held responsible for a large share of the thermal loss in a dwelling, sometimes as much as 50%. While this is true of the majority of traditional ventilation processes, the DVC system preserves heat in less occupied rooms, by automatically reducing the airflow, resulting in improved indoor air quality and greater energy savings.
The proposed construction method utilizes structural insulated panels (SIPs) for walls and roof which far exceed the minimum elemental U-values as defined in the Building Regulation Part L.
The Kingspan TEK Building, SIPSs System comprises 142 mm and 172 mm thick structural insulated panels with a high performance, thermoset, fibre-free, rigid urethane insulation core, sandwiched between two layers of 15mm Oriented Strand Board type 3 (OSB/3).
SIP buildings are generally more energy efficient, stronger, quieter and more airtight than older technologies, leading to significantly lower energy bills and a reduction in CO2 emissions. The insulation will not sag or physically deteriorate over time. Kingspan TEK panels are manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP). The panels are faced on both sides with 15 mm OSB/3, autohesively bonded to the rigid thermoset urethane insulation core during manufacture. This allows for a substantially greater pull out strength. Thermal conductivity (?-value) of the OSB/3 component of Kingspan TEK panels are assessed as 0.013W/mK. The thermal conductivity of the insulation core of, Kingspan TEK is typically, 0.023 W/mK. Kingspan TEK achieves a thermal resistance (R-value) of 5.100 m2kW (142 mm thick panels) and 6.405 m2kW (172 mm thick panels). Water Vapour Resistance of the insulation core of Kingspan TEK, typically achieves a resistance of 33.6 MN.s/g and the OSB/3 facing typically achieved 7.5 MN.s/g. when tested in accordance with BS EN 12086: 1997.
The rigid, urethane, insulation core is resistant to dilute acids, alkalis, mineral oil and petrol. The core and facings used in the manufacture of Kingspan TEK panels resist attack by mould and microbial growth and do not provide any food value to vermin.
The permissible vertical load resistance for Kingspan TEK panels are sufficient for the system’s use as loadbearing partitions, separating walls, the inner leaf of external walls and pitched roofs in dwellings up to four storeys high. When subjected to BS EN 1365-1: 2012 (Fire resistance tests for loadbearing elements), the Kingspan TEK passed half hour test – achieving 77 minutes insulation and integrity. Field measurements of airborne sound insulation between rooms on separating walls, externally faced with 12.5 mm plasterboard, achieved an average sound reduction of 58 dB. A laboratory test on a single wall panel with no internal dry-lining, achieved a sound reduction of 31 dB. The durability, as accredit by the BBA certificate, has deemed the system good for a minimum of 60 years.
Partridge Walk development will use a combination of two and three sash double and triple rack Ultraglide sliding doors by Smart Systems. Ultraglide delivers outstanding, long-lasting performance for enhanced comfort and economy, incorporating highly efficient thermal breaks, which will achieve between 0.85W/m²K and 1.1W/m²K thermal values to further enhance the low emission and increase the EPC ratting to AAA. Smart Systems are fully compliant with the requirements of Building Regulations Document Part L 2010. Ultraglide doors feature high-security glazing and robust locking mechanisms (including multi-point locks on the main opening sashes), with the Kite-marked system fully meeting the requirements of PAS 24.
Partridge Walk combines timeless, contemporary architecture with modern construction
techniques and materials, creating environmentally friendly, fully sustainable, thermally
efficient properties. This is the future of modern housing