Tethera
Aerial view courtesy Lunar AI
Replacement of an existing worn out bungalow in the Lake District with a new build Passivhaus holiday home.
Existing:
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Stunning location on north shore of Ullswater with view across lake to Hallin Fell.
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Existing bungalow built in late 1950s as staff accommodation for Outward Bound Centre; no architectural merit, modular build, no insulation, cold and damp.
Brief:
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New home to have three bedrooms, oriented to take advantage of views.
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Simple form, highly energy efficient, low maintenance, robust.
Planning:
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Located in World Heritage Site of National Park.
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Replacement build to have similar footprint form and materials as existing property.
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Full permission granted August 2020.
Proposals:
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New home to have three bedrooms, oriented to take advantage of views.
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Exceptional location and lake views have driven design concept.
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Simple rectangular, pitched roof form sits comfortably in the context.
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Improved accessibility by lowering internal floor level has allowed sufficient height for additional mezzanine floor at one end.
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Designed to certifiable Passivhaus Classic standard.
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Triple glazed windows and doors; quad glazed rooflights; larger windows on south and west elevations to maximise winter heat gain.
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Entirely timber frame, built as pre-fabricated and insulated panels in local factory.
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Roof and wall U-value 0.090W/m2K.
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Isoquick insulated raft and 60/40 concrete slab U-value 0.10W/m2K.
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Integrated in-roof PV panels powering Givergy battery storage, Mixergy dhw cylinder, radiant heating panels, Myenergi EV charge point.
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Full mechanical ventilation with heat recovery (MVHR).
Progress:
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Demolition and site clearance started in January 2021.
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Isoquick insulation installed in half a day.
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Concrete poured February 2021.
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Timber frame panels erected, windows installed, first fix started March 2021.
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Intermediate airtightness test achieved n50 of 0.14 ach/h in April 2021 with all penetrations complete.
Existing bungalow
Oops
Ground floor plan
First floor plan
Isoquick installation 10am
Isoquick installation 2pm
Ready for concrete.
Concrete. 40% GGBS replacement
Frame panels from Eden Insulation
That view
Frame panels took a day and a half to erect and make weathertight
View from A592
Hidden gutters span end to end
1st fix complete, ready for plasterboard
