Low energy retrofit, Dumfries & Galloway
A low energy retrofit has been undertaken on a Victorian property in Dumfries & Galloway. The house is in the traditional vernacular cottage style of the area and built from local sandstone and is divided into two flats with the upper flat, the subject of the case study, visible from the road. The retrofit has been project-managed by the clients, with building work undertaken by personnel from Nithsdale Stove Centre and Alan and Scott Nicholson, joiners, Lockerbie.
21°supplied the PERFORMANCE triple glazed timber windows and doors for the project, which were finished in a striking pink colour to complement the pink sandstone
Design
The house has been stripped back to its 500mm stone walls and a 100mm breathable IWI insulation system has been applied. Insulation was also added under the floor. Heating is provided by underfloor heating system with an air source heat pump, which also supplies the hot water for the flat. The retrofit is still ongoing but plans are underway to add loft insulation into the cold roof as well as an MVHR ventilation system.
Triple glazed windows & doors
PERFORMANCE triple glazed timber tilt and turn windows were chosen for the project, with paint finishes in RAL 4009 on the outside and RAL 9016 on the inside. Stone bed connector sills were chosen for the project. One set of PERFORMANCE triple glazed timber double doors with glazing bars, were also selected for the entrance door, finished in RAL 9016 inside and outside.
The clients chose large picture windows which they felt would suit the house well and were keen to have Tilt & Turn windows because they would be easy to clean from inside, something especially needed due to the lack of all-round external access to the windows.
The client