flat top social housing energy retrofit

Name: David Ledwith

Presentation: Design Strategy for the Deep Retrofit of a Typical Flat Top Social Housing Block

Brief: To Develop a Holistic Strategy for the Sustainable Regeneration of the Housing Block Type, with Baseline Targets of achieving an A2 BER Rating and compliance with Current Building Regulations

EXISTING PROPOSED

EXISTING BUILDING

• 2 x FIVE STOREY BLOCKS• 38 UNITS (MIXTURE of 1,2,3,4 BED)• SINGLE STOREY GROUND FLOOR UNITS & 2 X TWO STOREY DUPLEXES ABOVE• AVERAGE BER OF E1 320kWhr/sq.m/yr•CARBON EMISSIONS OF 128 TONNES

DESIGN ISSUES

1. ENERGY PERFORMANCE

2. TECHNICAL PERFORMANCE

3. SOCIAL & CIVIC PERFORMANCE

- BUILDING HAS A VERY POOR THERMAL PERFORMANCE

- MINIMAL TO ZERO LEVELS OF INSULATION- HIGH LEVELS OF THERMAL BRIDGING- LOW EFFICIENCY HEATING SYSTEMS- CONDENSATION & MOULD PROBLEMS- HIGH CARBON EMISSIONS

- DWELLINGS ARE SMALL (59 sq.m -2 Bed Duplex)- ACCESSIBILITY & FIRE SAFETY ISSUES- GROUND FLOOR LAYOUT & DEFENSIBLE SPACE

- BUILDINGS SET BACK & SURROUNDED WITH RAILINGS- POOR CONTRIBUTION TO URBAN STREETSCAPE- SOCIAL HOUSING STIGMA- FUEL POVERTY

POSITIVES- WELL BUILT STRUCTURES- STRONG COMMUNITIES

3. CREATION COMMUNITY SPACES

2. RE-IMAGINATION OFTHE GROUND PLANE

1. NEW THERMAL ENVELOPE

DESIGN SOLUTION

NEW THERMAL ENVELOPE

EXISITING

STRIP BACK TO ‘WINE RACK’ STRUCTURAL LAYOUT

CONSTRUCT NEW INSULATION LAYER AND BALCONIES

THE SECTION

NEW GROUND FLOOR

- NEW SINGLE STOREY PLINTH- NEW STAIRS & LIFTS - SHARED COURTYARD FORMED- UNITS ACCESSED FROM STREET- COMMUNAL FACILITIES- SHARED LAUNDRY- SECURE STORAGE- COMMUNITY ROOMS

FIRST FLOOR (& THIRD FLOOR)

- PLINTH FORMS A GARDEN - PLAYGROUND AREA- 14 UNITS DUPLEX UNITS- DUPLEX UNIT TYPE - EXTENDED INTO BALCONY &

WALKWAY- BATHROOM MOVED DOWNSTAIRS

SECOND FLOOR (& FOURTH FLOOR)

- UPPER FLOOR OF DUPLEX UNITS- THREE BED UNIT- TRIPLE ASPECT- UNIVERSALLY ACCESSSIBLE

VIEW OF GARDEN LEVEL

FIFTH FLOOR

- NEW FLOOR LEVEL- 3 NO. ONE BED UNITS- COMMUNAL PENTHOUSE ROOM- ALOTMENTS- 10 SQ.M PER UNIT

AXO

- GARDEN PLINTH WITH RECYLING FACILITIES AND CAR CHARGING POINTS

- ALOTMENTS ON THE ROOF- SOLAR PANELS REDUCE ENRGY

DEMAND- BIOMASS FUELLED CHP BOILER USED

TO PROVIDE HEAT

SUMMARY

- NEW URBAN BLOCK CREATED- INTEGRATED AT GROUND FLOOR LEVEL WITH

THE CITY- SAME NUMBER OF UNITS MAINTAINED – 38- UNIT SIZES HAVE INCREASED BY ONE THIRD- DEFINED OPEN SPACES CREATED- COMMUNAL ACCOMODATION CREATED- GARDEN & ALOTMENTS PROVIDED- A2 BER RATING WITH SOLARPANELS & CHP- 36 kWhr/sq.m/yr- NEGATIVE CARBON EMISSIONS –

4.1kgCO2/sq.m/yr

THANK YOU