Project Description. Projected build start date 15 Aug 2011 Projected date of occupation 19 Dec Existing external wall construction

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1 Project name Redlands Project summary Deep retrofit of 1955 brick house in Devon based on EnerPHit standard. House had old gas boiler, double glazing, cavity wall insulation and c. 100mm mineral wool loft insulation. Project Description Projected build start date 15 Aug 2011 Projected date of occupation 19 Dec 2011 Project stage Occupied Project location Crediton, Devon, England Energy target EnerPHit Build type Refurbishment Building sector Private Residential Property type Detached Existing external wall construction Masonry Cavity Existing external wall additional information Brick and block cavity wall Existing party wall construction none Floor area 150 m² Page 1

2 Floor area calculation method PHPP Project team Organisation Project lead Client Architect Mechanical & electrical consultant(s) Energy consultant(s) Structural engineer Quantity surveyor Other consultant Contractor Rob Rickey Rob and Karen Rickey Rob Rickey Warm Associates Barry Honeysett Simon Mildon Design strategies Planned occupancy Space heating strategy Water heating strategy Fuel strategy Renewable energy generation strategy Passive solar strategy Space cooling strategy Daylighting strategy Ventilation strategy Airtightness strategy Strategy for minimising thermal bridges Modelling strategy Two people plus; mixed work schedule Heating from mains gas fired boiler feeding existing radiators; supplementary woodburner for space heating only Gas boiler; solar collector planned but not implemented Mains gas. Mains electricity. 2.9 kwp PV array on studio Increase glazing area to south. Reduce existing glazing area to all other elevations Natural ventilation for most of the cooling season. Daytime use of MVHR with night purging during heat waves. Raise ceiling in sitting room to raise head of patio doors. Not calculated MVHR plus natural ventilation. Existing plaster connected to ceiling membrane above first floor. Suspended timber floor replaced with plywood- joints taped and boards taped to plaster on external walls. Wall between first floor joists parged and joists taped to parging. External wall insulation. Plasterboard fillet with insulation added to first floor ceiling to minimise thermal bridge at loft insulation junction. Insulated plasterboard added to window reveals. PHPP Page 2

3 Insulation strategy Other relevant retrofit strategies Other information (constraints or opportunities influencing project design or outcomes) External wall insulation installed. Loft insulation increased. suspended timber floor insulated with sheeps wool. Energy use Fuel use by type (kwh/yr) Fuel previous forecast measured Electri c Gas Oil LPG Wood Primary energy requirement & CO2 emissions Annual CO2 emissions (kg CO2/m².yr) Primary energy requirement (kwh/m².yr) previous forecast measured Renewable energy (kwh/yr) Renewables technology forecast measured PV Energy consumed by generation Airtightness ( 50 Pascals ) Date of test Pre-development airtightness - - Test result Final airtightness 10 Jun Annual space heat demand ( kwh/m².yr ) Space heat demand Pre-development forecast measured Whole house energy calculation method Other energy calculation method Predicted heating load Other energy target(s) PHPP 21 W/m² (demand) Page 3

4 Building services Occupancy Space heating Hot water Ventilation Controls Cooking Lighting Appliances Renewables Strategy for minimising thermal bridges 2 persons - mixed work schedule Mains gas and woodburner Gas boiler MVHR room thermostat. Standard and boost for MVHR Gas hob. Electric oven. Microwave 100% compact fluorescent A+ rated fridge 2.9 kwh PV array Psi values have been calculated for internal and external values. External psi-value have been entered into PHPP. Building construction Storeys 2 Volume 579m³ Thermal fabric area 353m² Roof description Roof U-value Walls description Walls U-value Party walls description Party walls U-value Floor description Floor U-value Glazed doors description Glazed doors U-value Opaque doors description Opaque doors U-value Windows description Windows U-value Windows energy transmittance (G-value) Clay tile roof - loft insulation 0.09W/m² K Masonry cavity wall with cavity insulation and 180mm platinum EPS insulation 0.12W/m² K Suspended timber floor with sheepswool. Partial concrete floor with edge insulation only 0.44W/m² K Triple glazed timber doors - Rationel 0.69W/m² K installed Triple glazed timber. Rationel Aura 0.90W/m² K installed 0.51% Windows light transmittance 0.72% Rooflights description Rooflights light transmittance Rooflights U-value Page 4

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