Admirals Hard

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FINALIST of the UK Passivhaus Awards 2015 - Situated on the Stonehouse peninsula, by the banks of the River Tamar, Number 3 Admirals Hard was built in the 1950s and comprises a shop on the ground floor and WARMs office, originally a flat, on the first floor. The first floor is EnerPHit certified. The extensive retrofit works included external wall insulation, cavity wall fill, floor insulation (between the office and the shop), roof insulation at rafter level, high levels of air tightness and high-performance triple-glazed windows, as well as a self-balancing MVHR system.
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Admirals Hard : Project images

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Admirals__Hard_Warm_IMAG0048.jpg
Admirals_Hard_-_WARM.jpg
CO2 emissionsPrimary energy requirement
Energy target
EnerPHit

Energy and fuel use

Fuel use by type
Primary energy requirement
CO2 emissions
Renewables

Measured data from renewable generation is not yet available.

Fuel use

 Pre-developmentForecastMeasured
Electricity use - - -
Natural gas use- - -
Oil use- - -
LPG use- - -
Wood use- - -
Other Fuel - - -
 Pre-developmentForecastMeasured
Primary energy requirement - - -
Annual CO₂ emissions - - -
Annual space heat demand - - -

Renewable energy

Electricity generationForecastMeasured
Renewables Technology--
Other Renewables Tech--
Electricity consumed by generation --
Primary energy requirement
offset by renewable generation
--
Annual CO₂ emissions
offset by renewable generation
--

Calculation and targets

Whole house energy calculation method PHPP
Other whole house calculation method-
Energy target EnerPHit
Other energy targets-
Forecast heating load -

Airtightness

 DateResult
Pre-development air permeability test--
Final air permeability test--

Project description

StageOccupied
Start date
Occupation date
Location Plymouth Devon  England
Build typeRefurbishment
Building sectorCommercial
Property typeDetached
Construction typeMasonry Cavity
Other construction typeFilled cavity with external insulation
Party wall construction
Floor area 80.9
Floor area calculation method Treated Floor Area (PHPP)
Building certification  Passivhaus certified building Passivhaus certified building

Project Team

OrganisationWARM: Low Energy Building Practice
Project lead personWARM: Low Energy Building Practice
Landlord or ClientWARM: Low Energy Building Practice
ArchitectWARM: Low Energy Building Practice
Mechanical & electrical consultant
Energy consultant
Structural engineer
Quantity surveyor
Consultant
ContractorWARM: Low Energy Building Practice

Design strategies

Planned occupancy
Space heating strategyOriginal Gas combi boiler retained
Water heating strategyOriginal Gas combi boiler retained
Fuel strategy
Renewable energy strategy
Passive Solar strategy
Space cooling strategy
Daylighting strategy
Ventilation strategy
Airtightness strategy
Strategy for minimising thermal bridges
Modelling strategy
Insulation strategy
Other relevant retrofit strategies
Contextual information

Building services

Occupancy10 Occupants
Space heating
Hot water
Ventilation
Controls
Cooking
Lighting
Appliances
Renewable energy generation system
Strategy for minimising thermal bridges

Building construction

Storeys
Volume -
Thermal fabric area -
Roof description Timber I-beams on air barrier on deck on existing rafters, fully filled with mineral wool
Roof U-value 0.14 W/m² K
Walls description Block cavity wall, phenolic foam to cavity, graphite EPS to exterior, render system
Walls U-value 0.13 W/m² K
Party walls description
Party walls U-value -
Floor description Intermediate floor void filled with cellulose. Floor re-laid with air barrier and floating floor. Ground floor lobby area - phenolic foam boards
Floor U-value 0.20 W/m² K
Glazed doors description Rationel Aura Plus
Glazed doors U-value 0.88 W/m² K uninstalled
Opaque doors description
Opaque doors U-value 0.88 W/m² K uninstalled
Windows description Rationel Aura Plus
Windows U-value - -
Windows energy transmittance (G-value) 51 %
Windows light transmittance -
Rooflights description
Rooflights light transmittance -
Rooflights U-value -