Hooton House, St Annes Terrace, Bristol, BS4 4DY
Download
as PDF New build four bedroom timber frame house built to the AECB Building Standard
Hooton House, St Annes Terrace, Bristol, BS4 4DY : Project images
Click on image to preview full size
Energy and fuel use
Measured data from renewable generation is not yet available.
Fuel use
| Pre-development | Forecast | Measured | |
| Electricity use | - | 2257 kWh/yr | - |
|---|---|---|---|
| Natural gas use | - | 7021 kWh/yr | - |
| Oil use | - | - | - |
| LPG use | - | - | - |
| Wood use | - | - | - |
| Other Fuel | - | - | - |
| Pre-development | Forecast | Measured | |
| Primary energy requirement | - | 117 kWh/m².yr | - |
|---|---|---|---|
| Annual CO₂ emissions | - | 24 kg CO₂/m².yr | - |
| Annual space heat demand | - | 22 kWh/m².yr | - |
Renewable energy
| Electricity generation | Forecast | Measured |
|---|---|---|
| Renewables Technology | - | - |
| Other Renewables Tech | - | - |
| Electricity consumed by generation | - | - |
| Primary energy requirement offset by renewable generation | 117 kWh/m².yr | - |
| Annual CO₂ emissions offset by renewable generation | 24 kg CO₂/m².yr | - |
Calculation and targets
| Whole house energy calculation method | PHPP |
|---|---|
| Other whole house calculation method | - |
| Energy target | AECB Silver |
| Other energy targets | - |
| Forecast heating load | 12 W/m² demand |
Airtightness
| Date | Result | |
| Pre-development air permeability test | 16 October 2019 | 0.16m³/m².hr @ 50 Pascals |
|---|---|---|
| Final air permeability test | 16 October 2019 | 0.16m³/m².hr @ 50 Pascals |
Project description
| Stage | Occupied |
|---|---|
| Start date | 17 February 2019 |
| Occupation date | 21 February 2020 |
| Location | Bristol Bristol England |
| Build type | New build |
| Building sector | Private Residential |
| Property type | Detached |
| Construction type | Softwood frame |
| Other construction type | |
| Party wall construction | |
| Floor area | 116.8 m² |
| Floor area calculation method | Treated Floor Area (PHPP) |
| Building certification |  AECB silver standard certified building |
Project Team
| Organisation | Earthwise Construction Ltd |
|---|---|
| Project lead person | Ben East |
| Landlord or Client | Ben Hooton |
| Architect | White Design |
| Mechanical & electrical consultant | Green Building Store |
| Energy consultant | Earth-wise |
| Structural engineer | Build Collective |
| Quantity surveyor | |
| Consultant | |
| Contractor | Earthwise Construction Ltd |
Design strategies
| Planned occupancy | Four people, two children at school during weekdays and Two adults in and out of the house all week |
|---|---|
| Space heating strategy | Heating is from a small gas fired boiler feeding radiators |
| Water heating strategy | Gas condensing system boiler feeding a 150L hot water tank |
| Fuel strategy | Mains Gas |
| Renewable energy strategy | N/A |
| Passive Solar strategy | Window proportions optimised using PHPP. However due to site restrictions most of the glazing is on the north side of the building |
| Space cooling strategy | Natural ventilation for most of the cooling season. High level roof windows where installed to aid in coolingDaytime use of MVHR with night purging during heat waves. |
| Daylighting strategy | No daylighting strategy was employed, due to the restrictions on the location and orientation of the house. |
| Ventilation strategy | Comfort ventilation with heat recovery (winter)Openable windows (summer) |
| Airtightness strategy | Smart Ply Pro Passive OSB boards where using internally over the timber frame walls & roof. All joints where taped. The concrete floor was the airtight barrier for the ground floor. All window/doors junctions where taped to the OSB boards internally. |
| Strategy for minimising thermal bridges | Continuous Insulation maintained throughout. Use of timber I josits throughout the construction helped minimise thermal bridges |
| Modelling strategy | Whole house modelling was undertaken in PHPP |
| Insulation strategy | Wall insulation level to achieve U-value of 0.11 W/mKRoof Insulation level to achieve U-value of 0.11 W/mKFloor insulation level to achieve U-value of 0.16 W/mK |
| Other relevant retrofit strategies | |
| Contextual information | Due to restriction on the site from a planning perspective, the house had to be sited and made to fit an area that was less than ideal. Knock on effects meant large amounts of glazing had to be installed on the North elevation |
Building services
| Occupancy | Two Adults Two Children |
|---|---|
| Space heating | Vaillant EcoTec 612 (12kW) system condensing ErP boiler |
| Hot water | 250litre Oso Delta indirect unvented cylinder (A rated appliance) |
| Ventilation | Zehnder ComfoAir Q350 ST |
| Controls | Room thermostat, three set points for MVHR |
| Cooking | Gas Hob and electric oven |
| Lighting | Mixture of LEDs and compact flourscents |
| Appliances | A+ Rated fridge, freezer. Washing machine Unkown |
| Renewable energy generation system | N/A |
| Strategy for minimising thermal bridges | No thermal bridge analysis was carried out. Thermal bridge free constructionn methods where used were possible |
Building construction
| Storeys | |
|---|---|
| Volume | 320.11m³ |
| Thermal fabric area | 3109 m² |
| Roof description | 300mm Timber I joists filled with Knauf Dritherm 32 Ultimate Mineral wool insulation. |
| Roof U-value | 0.12 W/m² K |
| Walls description | 300mm Timber I joists filled with Knauf Dritherm 32 Ultimate Mineral wool insulation. |
| Walls U-value | 0.12 W/m² K |
| Party walls description | N/A |
| Party walls U-value | 0.00 W/m² K |
| Floor description | 200mm Iso Quick Insulated Raft foundation system |
| Floor U-value | 0.16 W/m² K |
| Glazed doors description | Velfac triple glazed doors |
| Glazed doors U-value | 0.93 W/m² K installed |
| Opaque doors description | Velfac insulated solid panel door |
| Opaque doors U-value | 1.45 W/m² K installed |
| Windows description | Velfac triple glazed windows |
| Windows U-value | 0.93 W/m² K installed |
| Windows energy transmittance (G-value) | 0.53 % |
| Windows light transmittance | 0.73% |
| Rooflights description | Velux triple glazed rooflights |
| Rooflights light transmittance | 0.73% |
| Rooflights U-value | 0.81 W/m² K |
Hooton House, St Annes Terrace, Bristol, BS4 4DY : Download Files
10686870-Hooton-House-St-Annes-Terrace-B5094-Pos-_(1).pdf (251.72 KB) 6302_4_0101D_PLANS_-_Ground_Floor_Plan.pdf (148.77 KB) 6302_4_0102C_PLANS_-_First_Floor_Plan.pdf (224.5 KB) 6302_4_0103D_PLANS_-_Second_Floor_Plan.pdf (119.58 KB) 6302_4_0104B_PLANS_-_Roof_Plan.pdf (68.91 KB) 6302_4_0201A_SECTION_A.pdf (298.83 KB) 6302_4_0300C_ELEVS_-_NE.pdf (54.17 KB) 6302_4_0301B_ELEVS_-_SE.pdf (49.77 KB) 6302_4_0302B_ELEVS_-_NW.pdf (48.76 KB) 6302_4_0303B_ELEVS_-_SW.pdf (53.48 KB) 6302_4_2101A_DETAIL_-_Foundation_-_Slab_Edge.pdf (121.01 KB) 6302_4_2401A_DETAIL_-_Roof_Types.pdf (58.28 KB) 6302_4_2501C_DETAIL_-_External_Wall_Types.pdf (68.55 KB) 670_-_MVHR_Design_&_Commissioning_Report.pdf (109.93 KB) B5094-ALTRDF-P-161019.pdf (648.92 KB) PHPP_V9.pdf (110.71 KB)