Low Energy Buildings Database

Retrofit to Cottages, Warlingham, Surrey

An innovative combination of internal and external insulation with airtighting will reduce demand on a very hard to treat house. A solar gain heat pump will provide the remaining energy demand, and a PV array will give additional electricity production. The solution has been designed to be rugged and long-lived, and nearly all measures are maintenance-free. The solar gain heat pump is the only possible exception, and this will act as a closely monitored UK trial of the technology (which is widely used elsewhere in Europe). Emphasis has been placed on minimal disruption to the tenant, who will remain in-situ throughout the works.

Construction type	Solid Brick	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Warlingham Surrey	Project owner	CEN Services Ltd.
Retrofit for the future	ZA606E

Retrofitting a post Decent Home/Scottish Housing Quality Standard, concrete no-fines property to reach one-eighth of the existing energy use and carbon emissions.

Low energy and low carbon retrofitting of a two- bed end-terraced house in Rosyth, Scotland originally built in 1970 s to achieve 85% reductions in carbon emissions. The project s objective is to firstly halve the demand of energy use using passive design and fabric-related energy efficiency measures, then double the efficiency by installing efficient equipment and controls, and finally halve the carbon content of supplies using nominal level of well proven zero carbon technologies, to reach 1/8th of the existing emissions.

Construction type	Other	Project type	Refurbishment
Property type	End Terrace	Sector	Public Residential
Location	Rosyth -	Project owner	Home in Scotland
Retrofit for the future	ZA303S

Retrofitting a post Decent Homes Standard, timber frame property to reach one-eighth of the existing energy use and carbon emissions.

Fabric first retrofit of mid terraced 1970s timber framed dwelling, using innovative materials such as aerogel insulation, and technologies such as a compact service unit and waste water heat recovery system. Thermal bridging and airtightness will be radically improved in line with Passivhaus principles.

Construction type	Softwood frame	Project type	Refurbishment
Property type	Mid Terrace	Sector	Public Residential
Location	Hailsham East Sussex	Project owner	Home Group Ltd
Retrofit for the future	ZA564Y

Retrofitting to Passivhaus standards

The focus of the project was to investigate the premise that the best long term solutions to reduce carbon emissions are those that directly reduce demand for primary energy. To test this it was decided to investigate whether it was possible to practically implement Passivhaus construction standards to an existing 3 bed semi detached house, a form prevalent during the mass construction of social housing between 1950s - 1970s, in order to radically reduce the CO2 emissions and primary energy demand of the property. The Passivhaus standard was selected as a model to follow as its tried and tested principles places a focus an holistic approach to fabric improvement to significantly reduce the space heating demand.

Construction type	Masonry Cavity	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Didcot Oxfordshire	Project owner	A+G Architects (Oxford) Ltd
Retrofit for the future	ZA388A

Riverside HA - Semi-Rural 2 Bed Semi-Detached House

Constructed in 1950s, the property is typical end of terrace ex-council house. It has a southerly aspect with a lot of its roof facing south. Insulation will be by internal nanopore insulation. Heating is by EnviroPod, an MCS approved heat pump and thermal store package

Construction type	Masonry Cavity	Project type	Refurbishment
Property type	End Terrace	Sector	Public Residential
Location	Longtown Cumbria	Project owner	Roland Hill Ltd
Retrofit for the future	ZA448M

Rotherham 2010: Brampton retrofit

We are to carry out retrofit work to SIX PROPERTIES on the Brampton estate. The properties selected for the works are 1945 - 1965 post war 3 bed mid, or end, terrace which account for a high proportion of Rotherham 2010 stock. It is therefore fair to assume that a significant proportion of properties in the UK are built to these levels and standards and therefore these units will give excellent replicability to the works. The two blocks of three will be on the same estate, but on different roads as we want to compare the units. The tenant profiles are also considerably different so there is the added advantage of monitoring not only different technologies but also different lifestyles.

Construction type	Masonry Cavity	Project type	Refurbishment
Property type	End Terrace	Sector	Public Residential
Location	Rotherham South Yorkshire	Project owner	Bramall Construction
Retrofit for the future	ZA643N

Rural Innovation for the Future (RIFF)

Rural Innovation for the Future will deliver a non-invasive whole house retrofit kit consisting of four distinct modules: A non-invasive insulation module; an extremely low carbon heating module; a combined solar module and a lighting, appliances and control module. Each module could stand alone but together they form a whole house solution that delivers deep cuts in both carbon emissions and primary energy consumption. The focus is on delivering a rural solution but the unique innovation is the non-invasive nature of our chosen package of works. Our tenants will be able to remain in their homes throughout the retrofit project. Our solution also offers value for money as we plan to renovate two homes with the available funding.

Construction type	Masonry Cavity	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Beausale Warwickshire	Project owner	Encraft Ltd
Retrofit for the future	ZA237K

Rural solid wall terrace house - 80% carbon emission reduction through whole house upgrade approach using innovative technologies

Existing: Solid brick walls (430mm); Slate roof; Projecting stair hall (half brick walls); Rear kitchen extension. Proposed: Separate hall from the heated envelope (retain as draft lobby only) & change stair to discharge into l/room; Insulate & dry line house & kitchen walls; Increase roof insulation to 350mm; Insulate kitchen roof; Insulated floating floor with u/floor heating in l/room & kitchen; Triple glazed composite windows; GSHP serving u/floor heating; LED lights with 50k hours guaranteed max light output; Sun pipe to f/floor landing; Decentralised whole house ventilation system; 1.0kWp PV;Solar thermal panel; Shower water heat recovery; Reduced water consumption; Smoke alarm system; AA++ appliances; Smart metering with display.

Construction type	Solid Brick	Project type	Refurbishment
Property type	Mid Terrace	Sector	Public Residential
Location	Sea Palling Norfolk	Project owner	Victory Housing Trust
Retrofit for the future	ZA146G

Self Heating Social Housing- the zero carbon retrofit

The target for this project is to create the first UK PassivHaus retrofit using low/zero carbon technology and to reduce the CO2 generated from a Cornish Type 1 system-built property owned by RCT Homes by 100%

Construction type	Concrete frame	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Aberdare Rhondda Cynon Taff	Project owner	RCT Homes Ltd
Retrofit for the future	ZA028A

SNW Home retrofit - Crawley

This property is typical non-traditional or system built 3-bedroom property built in 1968. The proposed package of thermal insulation upgrades will go far beyond basic provision carried out to date, using ECD Architects retrofit experience to comprehensively address thermal bridging concerns and fabric air tightness whilst simultaneously employing advanced insulation materials to address heat loss. The whole house approach will also include market leading replacement fenestration. MVHR and cutting edge micro-generation technology in the form of both Combined Heat & Power and photovoltaics.

Construction type	Other	Project type	Refurbishment
Property type	End Terrace	Sector	Public Residential
Location	Crawley West Sussex	Project owner	Crawley Borough Council
Retrofit for the future	ZA592C