Retrofit

You don’t have to live in a new build to reap the benefits from modern energy efficient principles.

At Stoic Homes, we approach retrofitting as an act of respect — for the building, for the environment, and for the people who live within. Using Passivhaus EnerPHit principles, natural materials, and modern detailing, we breathe new life into old homes — making them warmer, quieter, healthier, and radically more energy-efficient. Thoughtful, resilient, and built to last — just as they should have been from the start.

Key Elements of a Retrofit

Insulation

Solar + Batteries

Ventilation

Air Tight Measures

Heat Pump

Past Retrofit Projects

  • Penwortham Retrofit

    Whole house retrofit of a detached 4 bedroom house estimated to have been built in the 1920s

    Problems:

    • Poor air quality in kitchen and bedroom
    • High annual heating costs
    • High annual electricity cost due to ownership of 2x electric vehicles
    • Unstable internal temperature throughout house
    • Damp & condensation issues
    • Excessive heat-loss via windows & doors
    • Poor air tightness (17ach/h @ 50pa)

    Solutions:

    • Internal Wall Insulation (Rigid Wood Fibre)
    • Ground Floor Insulation (Rigid Wood Fibre)
    • Upgraded Windows & Doors (triple glazed timber frame PH certified)
    • MVHR (Zehnder®)
    • Solar PV + Battery Storage (8.2kWp + 15kWh)
    • Air Source Heat Pump (8KW, Midea)
    • General Repairs
    • Air tightness upgrades
    • Mains water filtration, ionisation

  • Factory Solar Retrofit

    Whole house retrofit of a detached 4 bedroom house estimated to have been built in the 1920s

    Problems:

    • Poor air quality in kitchen and bedroom
    • High annual heating costs
    • High annual electricity cost due to ownership of 2x electric vehicles
    • Unstable internal temperature throughout house
    • Damp & condensation issues
    • Excessive heat-loss via windows & doors
    • Poor air tightness (17ach/h @ 50pa)

    Solutions:

    • Internal Wall Insulation (Rigid Wood Fibre)
    • Ground Floor Insulation (Rigid Wood Fibre)
    • Upgraded Windows & Doors (triple glazed timber frame PH certified)
    • MVHR (Zehnder®)
    • Solar PV + Battery Storage (8.2kWp + 15kWh)
    • Air Source Heat Pump (8KW, Midea)
    • General Repairs
    • Air tightness upgrades
    • Mains water filtration, ionisation

  • Penwortham Retrofit

    Whole house retrofit of a detached 4 bedroom house estimated to have been built in the 1920s

    Problems:

    • Poor air quality in kitchen and bedroom
    • High annual heating costs
    • High annual electricity cost due to ownership of 2x electric vehicles
    • Unstable internal temperature throughout house
    • Damp & condensation issues
    • Excessive heat-loss via windows & doors
    • Poor air tightness (17ach/h @ 50pa)

    Solutions:

    • Internal Wall Insulation (Rigid Wood Fibre)
    • Ground Floor Insulation (Rigid Wood Fibre)
    • Upgraded Windows & Doors (triple glazed timber frame PH certified)
    • MVHR (Zehnder®)
    • Solar PV + Battery Storage (8.2kWp + 15kWh)
    • Air Source Heat Pump (8KW, Midea)
    • General Repairs
    • Air tightness upgrades
    • Mains water filtration, ionisation

FAQ’s

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