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Multifamily House 1965-1980

Free Yoga

Existing specifications

Property Details

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Property size

62 m²

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Windows

Single glazing

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Floor

Uninsulated suspended timber floors

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Heating system

Electric storage heaters

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Cavity uninsulated walls

Minimal loft insulation

Leaky building

Natural ventillation

D (67)

Walls

Roof

Ventilation

Air Tightness

Energy performance  Details

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Final energy consumption

150.3 kWh/m²/year

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Energy Performance Certificate (EPC) band

Your suggested energy efficiency home improvements 

Click "i" to find out more about moisture risks related to each solution. 

Type of improvement 

Find out more

Estimated cost 

Yearly savings

Payback period

Disruption

Risk of moisture 

Floors 

Solid  floor with insulation beneath the floor

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Solid  floor with insulation above the floor

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Suspended timber floor with insulation between the joists

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Walls

Internal wall insulation

£4,000

£195

21 years

Significant

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Cavity wall insulation

£640

£145

4 years

Low

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External wall insulation

£6,700

£195

34 years

High

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Roofs 

Warm pitched roof (Insulation between rafters)

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Cold pitched roof (Insulation at celling level)  

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Windows and doors

Replacement of windows doors + mechanical ventilation

£7,200

£364

20 years

High

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Heating

Mains gas combi-condensing boiler

£1,800

£150

12 years

Moderate

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Air Source Heat Pump

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Renewable energies 

Installation of solar PV panels

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Upgrade recommendation summary 

Estimated cost 

Yearly savings

Payback period

Disruption

Risk of moisture

£13,590

£618

22 years

Significant

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Your potential EPC band 

Free Yoga

Important note: Theses are only estimates based on the selected building type and not valid as an actual Energy Performance Certificate (EPC). The EPC for your home may vary.  If your home doesn't have an EPC  we recommend contacting an accredited energy assessor for a full EPC survey before making any decisions. You can access your EPC using the button below. 

Your step by step retrofit plan 

In the case where the package of solutions cannot be implemented out at once (lack of time, money, too much inconvenience, or any other reason), it is possible to carry out the retrofitting work through a step-by-step approach. One way of doing this is to prepare a “medium-term improvement plan”.

 

According to the British standard for domestic retrofitting PAS2035, “The purpose of a medium-term improvement plan is to guide the staged or phased improvement of a dwelling by identifying the improvements that are needed and an appropriate order for their implementation.” It is the responsibility of the retrofit coordinator to develop the medium-term improvement plan.

 

PAS2035 recommends that retrofit measures should be implemented in five stages:

01.

Repair any defects

Repair defects that alter the energy efficiency of the building and compromise improvement measures. For example, dealing with water ingress, dump walls, cracks, and gaps in walls before applying any insulation.  

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02.

Install the most cost-effective measures

Install the most cost-effective measures also known as “low hanging fruit” such as energy efficient lighting, basic heating controls, better control settings.

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03.

Insulate the building envelope

Insulate the building envelope (walls, roof, floor, windows, and doors), improve the airtightness, and install mechanical ventilation.

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04.

Install efficient systems

Install efficient heating technology (Air Source Heat Pump, high efficiency boiler) and responsive controls (thermostat, thermostatic radiator valves).

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05.

Renewable energies

Use renewable energy technologies (solar photovoltaic panels, solar thermal panels, wind turbine) to further improve the performance of the dwelling.

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What's Next?

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Find a accredited retrofit coordinator

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Find out how you can pay for your improvements

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Hints and tips on how to deal with damp and condensation

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