Mayfield Road

Conversion of Traditional Outbuilding

The large 11/2 storey Victorian outbuilding may have been used in the past as a dairy or workshop, although more recently it had functioned as storage for the family. Initially resistant, the Planning department approved the project to subdivide the site and convert the outbuilding into a 2 bedroom dwelling in 2013. The key strategies underlying the conversion were to preserve its essential form, features and character, whilst creating a well-insulated, modern mews-type family home.

Alterations to the principal frontage are limited, consisting of repairs to stonework; the replacement of windows and formation of a glazed infill within the large opening. The roof finish has also been renewed with natural slate and roof windows installed to provide natural light to the upper floor. The building fabric has been insulated to a high level of thermal performance using hygroscopic woodfibre insulation.

The outbuilding prior to the project

Installation of tongue and groove over-rafter woodfibre insulation. The battens form the ventilated cavity between the sarking and insulation. Note the taped joints at the apex.

Existing walls parged with lime based render coat to provide flat, plumb, airtight and vapour-open substrate for the insulation.

Tongue and groove Pavatex Pavadry board adhered and mechanically fixed to substrate. Battens are fixed to the interior surface and finished with plasterboard. No vapour control membrane has been used.

New triple glazed sliding doors in the existing aperture. Existing stonework has been repointed with lime.