Hereford retrofit
All our portfolio projects
Herefordshire farmhouse
In December 2025, we re-visited site to admire the extensive work carried out by our clients at this Herefordshire farmhouse. It’s a couple of years now since we completed the Listed Building Consent and detail design work for this retrofit. In the main hygroscopic insulation materials were specified for ceiling / loft, walls and floor to the cellar. Window reveals required a thin solution. Lime plaster finishes throughout. Aluminium slimline...
Criccieth retrofit
Over the Autumn and Winter of 2024 / 25, Andy Simmonds and Adele Mills have teamed up once again to work ‘on the tools’ together on site. We have carried out a modest retrofit project of a small living unit, adjacent to existing cottage. The focus has been to use bio-based materials. Internal insulation with cellulose, cork and wood fibre. Lime plaster finish on the wood fibre lining. Existing double-glazed...
Shropshire retrofit / extension
The project brief asked for dramatic increase of energy efficiency for this 1950’s semi-detached house, with a single storey extension to the living space facing the back garden. The budget was modest so it was clear that the AECB’s Level 2 Retrofit Standard would be a good target. https://aecb.net/aecb-carbonlite-retrofit-standards-level-1-and-2/ Our clients were a pair of novice self-builders, already armed with a good amount of research into the subject, allowing them...
Summerhouse
A garden outbuilding in Hereford, designed by Andy Simmonds, built by Fraser Williams with apprentice, Raimi Wye. Complete Summer 2022. Brief description from Fraser ‘ We built this garden room in the summer of 2022. I was the main carpenter working alongside apprentice Raimi Wye. Andy Simmonds provided a lot of practical support during the build – such as input on building details and construction techniques – and drew up all...
Ridge
Retrofit of 1960’s bungalow in the Malvern area. Completed towards the end of Summer 2022. Design to AECB Retrofit Standard – see https://aecb.net/aecb-retrofit-standard/ Project management and specialist contractor – www.ecovertsolutions.co.uk Main Contractor Oneport Building Ltd. This was the second retrofit scheme that we’ve worked on a ‘better building model’ – lockdown meant progress on some of these jobs was very slow – good builders even harder to come by than...
Chestnuts
The Chestnuts featured in a ‘Passive House Accelerator’ webinar in May ’22 See links to Youtube recordings here : Partel: https://www.youtube.com/watch?v=lCaZO6ufW94 Accelerator: https://www.youtube.com/watch?v=YEsFV-pVsjg&list=PLnIli3Bt55ttDSGau60bjJfL72NgJ3uD7&index=7 It also features on pg. 98 of their Summer magazine. See this link https://indd.adobe.com/view/f47041e2-3d1b-4a33-a706-ea6e582ba7e3 This is a near-Enerphit standard retrofit of a 1950’s detached house in Chepstow. After months of waiting through the lockdowns of 2020, a contractor from Newport was selected to work alongside https://www.ecovertsolutions.co.uk/ The...
Honeycroft
Our clients here had a small cottage with extremely narrow stairs to a limited head height loft area. It quickly became clear that a replacement dwelling was the best option. We designed a timber frame flat roof house; this has achieved Passivhaus target for energy efficiency. The completed project is not yet certified, but that is the clients’ intention. The house was built by local passivhaus / timber frame specialists,...
Tanzanian Eco-Village
2025 update : Our work at the Eco-village with Islamic Help is continuing. Andy Simmonds has visited the site several times to research and assess the completed House 5 and to inform the retrofit design for previously built houses which are in need of upgrade. Photos here show House 5 in use. 2023 update: A building test unit was built in 2018 and 12 months of data showed what worked...
Hereford retrofit
