Oakley Street - Shrewsbury

Property details:

1930s 3-bed semi detached

Solid brick walls

DIY deep retrofit 

What changes have been made:

Ground floors replaced with 100mm concrete above 250mm expanded polystyrene (EPS) insulation, 100mm wood fibre internal wall insulation on front wall, 120mm EPS external wall insulation applied to side and rear walls, 400mm cellulose insulation in loft, chimney flues sealed at base and filled with perlite, general airtightness improvements to achieve 0.86 air changes per hour at 50Pa, mechanical ventilation with heat recovery system installed, underfloor heating system for half of downstairs, radiators sized for 40°C flow elsewhere, 5kW air source heat pump (ASHP) for heating, Sunamp heat battery for hot water powered by ASHP, 44mm triple glazed windows throughout, new front and rear composite doors, meets AECB Retrofit Standard. Single storey extension at rear with 200mm raft slab on 250mm EPS insulation, 140mm block wall, 250mm EPS external wall insulation, 300mm cellulose insulation in roof, 44mm triple glazed windows and bifold door.

For more information please see attached PDF.

Additional information

(PDF, 195kB)