SuperHome Database

London, Hammersmith and Fulham, Lena Gardens

House Summary

Tom Pakenham

House Type:
Victorian mid-terrace house from circa 1880

Carbon saving:
77% - SuperHomes Assessed  

  • London, Lena Gardens SH (Certified Passive House)
  • TP_roof_insulation
  • TP_retrofitting_solar_pv
  • TP_passivhaus_sash_tilt_windows
  • Sitting room in Tom Packenham’s Victorian passivhaus

Measures installed:

  • Internal Wall Insulation
  • Low Energy Appliances
  • Low Energy Lighting
  • Mechanical Ventilation Heat Recovery
  • Roof Insulation
  • Solar PV Panels
  • Solar Water Heating
  • Triple Glazing
  • Water Saving Devices

Upcoming events

Early interest in Open Days encourages SuperHome owners to host more events. If you'd like to visit this property please contact the owner and let them know. SuperHomers are often happy to respond to questions about their refurbishment project by email between times. Please read ‘more on contacting this SuperHomer’ before you make contact.

Measures installed in detail:

  • Triple-glazed, sash lookalike but tilt-and-turn, argon filled, double e-coated. Whole window U-value of 0.9.
  • Brand new windows and doors, all with 3 seals and because they are tilt-and-turn. Air tightness tested with blower door to 0.48 ach @ 50Pa.
  • Internal insulation on external walls – 180 Kingspan Phenolic foam. U-value of 0.1. Party walls insulated with 50mm of Kingspan Phenolic foam.
  • Loft converted – 180 mm Phenolic foam between and over rafters.
  • 150 Phenolic foam insulation across all ground floors
  • Thermal envelope complete with 180 mm Phenolic foam ceiling insulation. Minimal thermal bridging through very careful design and use of structural insulation to close off thermal bridges
  • Genvex Combi 185 – does ventilation with Heat Recovery, some space heating and hot water via a 600w heat pump working off the exhaust air
  • 7m2 of flat plate solar thermal, south-facing. 600l storage capacity
  • 1.17kw PV system, flat-mounted. Output last year was 830kWh, which is about 15% of total energy consumption of the house
  • 85% of our lighting is either LED or CFL.
  • Low energy appliances throughout
  • Water saving devices include; all loos, taps and showerheads are low flow
  • No wet heating needed. No radiators or Underfloor heating – Passive House.
Common questions and answers for this SuperHome

When did you refurbish your house and how long did it take?+

We refurbished in 2010. It took 10 months from January to October.

Did you use a specialist builder or coordinate the various trades involved yourself?+

We had a highly trained engineer. To do it properly, some real expertise and attention to detail is required.

Were you satisfied with the standard of work and would you recommend the builder you used?+

The standard was excellent, but the builder and I fell out over various non-technical matters, primarily because we had hoped to go into business together and as sometimes happens this led to differences of opinion.

Where can I find out more about how you took a green retrofit to Passivhaus standard?+

You can read the FAQ here I wrote on How to take a green retrofit to Passivhaus standard. There is lots of other information – including a very in-depth video log here and a detailed case study here.

Contact this homeowner

Assessment types

SuperHomes Assessed

A home that has been visited and assessed by us and confirmed as reaching the SuperHome standard, which demonstrates a 60% carbon saving.

Homeowner Reported

Information has been provided by the homeowner about their home and energy use prior to the installation of measures and following their installation which demonstrates a carbon saving. This information has not been verified.

Remote Assessed

The homeowner has provided information on their home including what measures have been installed which has enables an assessor working on our behalf to assess their carbon savings. This home has not been visited to verify the measures installed.


This home has not been assessed, but the homeowner has reported what measures have been installed. It may be that this home is awaiting assessment.