Low energy design using Passivehaus principles with space heating bills predicted at £70/year
Description
low energy super retro-fit and extension
Description
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Projects

Description
The project: A low energy super retro-fit and extension,

Location: Ideford, Devon

Technical designer: Tom Foster (easy! ways to EcoBuild)

Description: This project was a true sustainable build,using timbers from the surrounding woodland. The existing 300 year old mill was upgraded with 200 mm EPS EWI system that was extended down into the ground and up into the roof over the wall plate to connect to the roof insulation. The new extension incorporated an insulated raft foundation with Tom Foster’s hybrid wall construction of 150mm timber frame with Osb3 Smartply external sheathing and plasterboard internal full filled with Warmcell500 and externally bonded 150mm EPS70 counter-battened and timber cladding. Indicative Uvalue 0.14W/m2K Roof construction is similar to walls with natural slate cover. Cold bridging was addressed by connecting seamlessly the outer layer of 150mm EPS wall insulation to the insulation from the foundations. Windows and doors were Russel timber Tech triple glazed eco contract
The project: A lowenergy extension,

Location: Longwell Green, Bristol

Technical designer: Tom Foster (easy! ways to Eco Build)

Description: This project tackled the problems of a restricted site with limited access. An innovative timber foundation and timber frame super structure, less than 1/2m3 of concrete was used in the substructure to form leveling pads that supported reclaimed Jarrah crossing sleepers as foundation beams with timber joists and timber frame superstructure above.
The new extension incorporated an insulated foundation using 400mm of Lecaexpanded clay,with Tom Foster’s hybrid wall construction of 150mm timberframe with Osb3Smartply external sheathing and plasterboard internal and fulfilled with Warmcell500and externally bonded 150mm EPS70 coated in Parex lightweight render system. IndicativeUvalue 0.14W/m2K
Roof construction is similar to walls with corragatedcoatedsheetcover. Cold bridging was addressed by connecting seamlessly theouter layer of150mm EPS which also connect to the insulation from thefoundations.
Windows and doors were triple glazed UPVC


The project: A low energy extension and complete overhaul of existing 300 year old cottage

Location: Cannington, Somerset

Technical designer: Andrew Dodden



Description: This was our own family home, a 300 year old cottage in need of future-proofing The existing drafty, single glazed, solid stone cottage was full of character and charm but unbearably cold in winter and painfully expensive to heat.

So we planned a full retrofit project for the cottage and a large glassy extension.

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