Energy efficiency, retrofitting, and sustainable construction supplementary planning document

Contents

• Introduction
• Retrofitting options
  • Introduction to retrofitting
  • Summary table: Retrofitting measures and their impact
  • Electric vehicle charging infrastructure (EVCI)
  • Timber floor draughtproofing
  • Timber door draughtproofing
  • Timber floor insulation
  • Chimney register plate
  • Chimney draughtproofing balloon
  • Metal framed window draughtproofing
  • Timber casement window draughtproofing
  • Timber sash window draughtproofing
  • Secondary glazing
  • Slim profile double glazing
  • Double and triple glazing
  • Reinstate existing and missing shutters
  • Cavity wall insulation
  • Internally applied solid wall insulation
  • Externally applied solid wall insulation
  • Insulating solid floors
  • Roof insulation at ceiling level
  • Roof insulation at rafter level
  • Solar photovoltaics (PV) and solar thermal
  • Ground source heat pump
  • Air source heat pump
  • Mechanical ventilation and heat recovery
  • Boiler and heating controls
  • Rainwater harvesting
  • Greywater recycling
• Sustainable construction: the principles
• Achieving affordable warmth
• Further information

Summary table: Retrofitting measures and their impact

Contents

Cost

Measure	Cost
Reinstate missing shutters	Low to medium
Timber floor draughtproofing	Low
Timber door draughtproofing	Low
Timber floor insulation	Low to medium
Chimney register plate	Low
Chimney draughtproofing balloon	Low
Metal framed window draughtproofing	Low
Timber casement window draughtproofing	Low
Timber sash window draughtproofing	Low
Secondary glazing	Medium
Slim profile double glazing	Medium to high
Double and triple glazing	Medium to high
Cavity wall insulation	Low
Internally applied solid wall insulation	High
Externally applied solid wall insulation	High
Insulating solid floors	Medium
Roof insulation at ceiling level	Low
Roof insulation at rafter level	Low
Solar photovoltaics and solar thermal	Medium
Ground source heat pump	Medium to high
Mechanical ventilation and heat recovery	Medium
Boiler and heating controls	Medium
Air source heat pump	High
Rainwater harvesting	Medium
Greywater recycling	Medium

Impact

Measure	Environmental impact
Reinstate missing shutters	Low to medium
Timber floor draughtproofing	Low
Timber door draughtproofing	Low
Timber floor insulation	Medium
Chimney register plate	Low
Chimney draughtproofing balloon	Low
Metal framed window draughtproofing	Low
Timber casement window draughtproofing	Low
Timber sash window draughtproofing	Low
Secondary glazing	Medium
Slim profile double glazing	Medium
Double and triple glazing	High
Cavity wall insulation	High
Internally applied solid wall insulation	High
Externally applied solid wall insulation	High
Insulating solid floors	Medium
Roof insulation at ceiling level	High
Roof insulation at rafter level	High
Solar photovoltaics and solar thermal	Medium to high for PV, Low for thermal
Ground source heat pump	Low to high, depending on fuel source
Mechanical ventilation and heat recovery	Low to medium
Boiler and heating controls	High
Air source heat pump	Low to high, depending on fuel source
Rainwater harvesting	Medium
Greywater recycling	Medium

Consents

Measure	Consents required
Reinstate missing shutters	Listed Building Consent
Timber floor draughtproofing	Listed Building Consent (not normally)
Timber door draughtproofing	Listed Building Consent (not normally)
Timber floor insulation	Listed Building Consent, Building Control
Chimney register plate	Not applicable
Chimney draughtproofing balloon	Listed Building Consent (not normally)
Metal framed window draughtproofing	Building Control
Timber casement window draughtproofing	Listed Building Consent (depending on the system used), Building Control
Timber sash window draughtproofing	Listed Building Consent (not normally), Building Control
Secondary glazing	Listed Building Consent, Building Control
Slim profile double glazing	Listed Building Consent, Building Control, Permitted Development, Planning Permission
Double and triple glazing	Listed Building Consent, Building Control, Permitted Development, Planning Permission
Cavity wall insulation	Listed Building Consent, Building Control
Internally applied solid wall insulation	Listed Building Consent, Building Control
Externally applied solid wall insulation	Listed Building Consent, Building Control, Permitted Development, Planning Permission
Insulating solid floors	Listed Building Consent
Roof insulation at ceiling level	Listed Building Consent, Building Control
Roof insulation at rafter level	Listed Building Consent, Building Control, Permitted Development, Planning Permission
Solar photovoltaics and solar thermal	Listed Building Consent, Building Control, Permitted Development, Planning Permission
Ground source heat pump	Listed Building Consent, Building Control, Permitted Development
Mechanical ventilation and heat recovery	Listed Building Consent, Building Control, Permitted Development, Planning Permission (for flues or ventilation)
Boiler and heating controls	Listed Building Consent, Building Control, Permitted Development, Planning Permission (for flues or ventilation)
Air source heat pump	Listed Building Consent
Rainwater harvesting	Listed Building Consent, Building Control, Permitted Development, Planning Permission
Greywater recycling	Listed Building Consent, Building Control

Scalability

Measure	Scalability
Reinstate missing shutters	Not suitable for scaling
Timber floor draughtproofing	Not suitable for scaling
Timber door draughtproofing	Not suitable for scaling
Timber floor insulation	Not suitable for scaling
Chimney register plate	Not suitable for scaling
Chimney draughtproofing balloon	Not suitable for scaling
Metal framed window draughtproofing	Not suitable for scaling
Timber casement window draughtproofing	Not suitable for scaling
Timber sash window draughtproofing	Not suitable for scaling
Secondary glazing	Not suitable for scaling
Slim profile double glazing	Not suitable for scaling
Double and triple glazing	Not suitable for scaling
Cavity wall insulation	Not suitable for scaling
Internally applied solid wall insulation	Not suitable for scaling
Externally applied solid wall insulation	High
Insulating solid floors	Not suitable for scaling
Roof insulation at ceiling level	Not suitable for scaling
Roof insulation at rafter level	Not suitable for scaling
Solar photovoltaics and solar thermal	High
Ground source heat pump	High
Mechanical ventilation and heat recovery	Not suitable for scaling
Boiler and heating controls	Not suitable for scaling
Air source heat pump	Not suitable for scaling
Rainwater harvesting	Not suitable for scaling
Greywater recycling	Not suitable for scaling