Low Energy Buildings Database

Eco-retrofit Bolton

This forward-thinking project is a tenure-neutral whole house solution that makes the most of existing external spaces surrounding the semi-detached house and combines a series of innovative technologies, including a ground source heat pump that does not require a separate water tank, ventilating windows, mechanical ventilation with heat recovery and photovoltaics. Energy demand however is first reduced through a mixture of experimental external insulation, internal superinsulation and low air permeability. Technology is simply controlled by tenants and aims to reduce their CO2 emissions to 17kg per metre-squared per year or better. This radical all-electric solution is a first of its kind in an area of the UK that needs regeneration.

Construction type	Masonry Cavity	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Kearsley, Bolton Lancashire	Project owner	Bolton at Home
Retrofit for the future	ZA611X

Eco-retrofit Brierfield

This unique proposal combines an emissions-reduction-driven-retrofit with a socially-driven refurbishment whereby two hard-to-treat properties are knocked through to create one larger property for larger families, much needed in the area. A UK-based supply chain includes an innovative internal super insulation and a yet to be released to market micro combined heat and power (CHP) unit. As these properties will have undergone recent Decent Homes works the proposal is not to replace recently installed measures, but augments them, e.g, the introduction of secondary glazing as opposed to whole and disruptive replacement of newly-installed windows. Fabric improvements, low air permeability and MVHR will significantly reduce energy demands.

Construction type	Solid Brick	Project type	Refurbishment
Property type	End Terrace	Sector	Public Residential
Location	Brierfield Lancashire	Project owner	Housing Pendle
Retrofit for the future	ZA613K

Eco-retrofit Colne

This tenure-neutral whole-house solution on an existing hard-to-treat property aims to meet low CO2 objectives by the innovative retrofitting of Passivhaus standards . The UK-based supply chain includes an innovative internal superinsulation, an air source heat pump with integral mechanical ventilation with heat recovery, space-saving low H2O radiators, and specially-fabricated Passivhaus-standard windows. This is a radical all-electric solution and a first-of-its-kind retrofit in an area where many properties require extensive renovation.

Construction type	Solid Brick	Project type	Refurbishment
Property type	Mid Terrace	Sector	Public Residential
Location	Colne Lancashire	Project owner	Housing Pendle
Retrofit for the future	ZA614G

Eco-retrofit Ealing

This is a whole-house retrofit of Passivhaus standards in a radical, all-electric solution with the intention to reduce and eventually remove reliance on fossil fuels. Innovations include an experimental composite external render and intelligent electrically-heating windows. Passivhaus standards will be met using thermal mass, very low air permeability and mechanical ventilation with heat recovery, hopefully guaranteeing that the property would not require future retrofitting. The property will be extended to become a bigger property during the Retrofit for the Future works. Embodied energy is also considered in the proposals as well as operational energy, reflected in the choice of local suppliers, and also in the choice of materials.

Construction type	Solid Brick	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Ealing London	Project owner	Ealing Homes Ltd.
Retrofit for the future	ZA536U

Eco-retrofit Orpington - a multiple house solution

This whole-house AND MULTIPLE HOUSE solution is applicable to both void and tenanted homes that may or may not be at Decent Homes standards and makes most benefit from shared external spaces between houses. The UK-based SME supply chain includes an innovative ground source heat pump system that does not require a separate hot water tank, reducing disruption to tenants as the borehole is made in external land not in the residents' gardens, potentially bringing a district or shared energy network to the estate.

Construction type	Masonry Cavity	Project type	Refurbishment
Property type	End Terrace	Sector	Public Residential
Location	Darrick Wood, Orpington Kent	Project owner	Keniston Housing Association
Retrofit for the future	ZA538P

Enfield Homes retrofit, Enfield

This project will focus on a property in the heart of the borough that offers particular challenges and will seek to establish a complementary and replicable set of measures which significantly reduce energy use and CO2 emissions. 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	Enfield London	Project owner	Enfield Homes
Retrofit for the future	ZA628L

Flagship Retrofit - Incentivising Building Occupants

We recognise the critical role of human behaviour in determining the real-life efficiency of buildings. For this retro-fit proposal, our aim is to influence the behaviour of the occupants by providing them with specific information on how the building is performing, and energy / carbon saving advice based upon detailed analysis of their actual usage patterns. We believe that we can demonstrate an effective and scaleable whole-house solution that can be cost-effectively and rapidly deployed by RSLs. The main elements of our proposal are: * Physical building upgrade with minimal tenant disruption * Real-time data capture and analysis * Communication with occupants * Wider Incentives and Issues

Construction type	Masonry Cavity	Project type	Refurbishment
Property type	Mid Terrace	Sector	Public Residential
Location	Martlesham, Ipswich Suffolk	Project owner	Carnego Systems Ltd
Retrofit for the future	ZA392F

Gentoo Retrofit Bid 1

Refurbishment of 2no. Semi Detached houses using Passivhaus principles

Construction type	Masonry Cavity	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Sunderland Tyne & Wear	Project owner	Gentoo Sunderland Ltd
Retrofit for the future	ZA019L

Gentoo Retrofit Bid 2

Refurbishment of a pair of solid wall construction semi-detached units using passivhaus techniques

Construction type	Other	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Sunderland Tyne & Wear	Project owner	Gentoo Sunderland Ltd
Retrofit for the future	ZA527V

Gentoo Retrofit Bid 3

Refurbishment of a pair of semi-detached non-traditional construction semi detached houses using PassivHaus techniques.

Construction type	Other	Project type	Refurbishment
Property type	Semi-Detached	Sector	Public Residential
Location	Sunderland Tyne & Wear	Project owner	Gentoo Sunderland Ltd
Retrofit for the future	ZA532L