Housing Specifier Issue 9 2018 | Page 6

with a bench made of the same CLT as the superstructure inviting use when meeting neighbours as well as being convenient to rest yourself and grocery bags while fumbling for keys. On entering it is apparent the exposed Cross Laminated Timber (CLT) acts as the superstructure for all walls, floors and the roof with visible construction joints expressing the method of assembly. Insulation with vapour barrier and protecting sheeting are applied to the outside face before a self-supporting brick rain-screen completes the exterior thermal and protective overcoat. Ceilings are also left exposed with the use of a fire retardant clear varnish and acoustic performance achieved using resilient boards, insulation and a floating timber floor above; these also accommodating 6 the underfloor heating, power, data and hot/cold water services. The ability of the CLT to serve as structure and finish removed the need for plasterboarded walls, suspended ceilings, cornices, skirtings, tiling and paint; reducing by 15% the embodied carbon of the building, its construction cost and time on site. Timber also has inherently more robust and is perhaps a better and warmer domestic aesthetic. Window seats, timber cabinetry and full height doors some with leather handles, others with bespoke and articulated metal locks continue the sense of home. The project required a comprehensive understanding of the different materials involved and their structural properties as well as careful detailing because many of the loadbearing elements are exposed.