DuPont Tyvek Reflex and DuPont AirGuard Reflective AVCL have been installed to the walls to enhance sustainability and efficiency, for a new build pitched-roof private home in Rostrevor, Ireland by Kilbroney Timberframe.

The project features the very best in building envelope technology. Over an ecologically sourced timber frame, DuPont Tyvek Reflex has been installed to the external walls with DuPont AirGuard Reflective AVCL to the interior walls. In between is fitted 140mm insulation board and a service batten. Finally, the walls are finished internally with plasterboard and externally they are rendered. The roof covering is slate and the windows are Alu clad and double glazed.

The house performs as impressively as it looks, with pressure tests for airtightness from the use of the DuPont membrane system coming in as 0.94m3/(h.m2)@50Pa, with U values of 0.12 wm²k for the timber frame external walls, 0.12 wm²k for the ceilings and 0.12 wm²k for the vaulted ceiling.

Mark Cooper of Kilbroney Timber Frame says, “the DuPont membranes were selected following a lot of research to ensure this project would perform as designed, and these were clearly the best materials from what we know to be a trusted brand. The membranes were extremely easy to work with and to install and the results have been outstanding, we will definitely continue to work with these products.”