Spacetherm WL (Wall Liner), with its impressive thermal properties, has been selected to improve the energy efficiency of a Victorian built apartment in southwest London.
A complete refurbishment of the apartment at Quill Lane, SW15 has been undertaken by Ecoalex, specialists in green infrastructure design, build and maintenance. Driven by the client’s desire for comprehensive energy efficiency improvements, the challenge began of transforming a traditional solid wall property. The requirement was to deliver improved warmth and thermal performance, whilst addressing the condensation issues often associated with solid walls. Care was taken to ensure that works would afford an improvement in air quality and thereby protecting the health of the occupants. High quality insulation combined with ventilation and breathability was key to achieving this.
Alex Woodcraft, Managing Director of Ecoalex explains: “The apartment spreads over two floors and the front wall of the solid wall construction loses a large proportion of the heat. The roof area was insulated with layers of insulation and insulated plasterboard. The solid wall construction and design of the property meant that space for internal insulation was limited. We chose to apply Spacetherm WL (Wall Liner), from the A. Proctor Group, a high-performance laminate specifically designed to be adhered to the internal surfaces of existing solid walls without the need for mechanical fixings. At just 13mm thick, and given the limited wall space, the use of Spacetherm WL was ideal.”
Spacetherm WL consists of Spacetherm aerogel insulation blanket bonded to 3mm Magnesium Oxide Board, for use in applications where improved thermal performance is required with limited space. Spacetherm WL can be used with a variety of decorative finishes such as paint, wallpaper and tiles.
“The Spacetherm product was really easy and quick to apply,” comments Alex, “ the boards were fully installed and finished with a lime plaster skim in just two days. Spacetherm is an ideal solution for improving the thermal performance in space-critical applications, like the apartment at Quill Lane, and combined with its excellent breathability was also able to satisfy our requirement to ensure an improvement in air quality throughout.”
Typically, a solid wall will have a U value of around 2.1 W/m2K. Following the application of Spacetherm WL, this can be reduced to around 0.8 W/m2K, dependent on the wall structure.
For any building to have an energy efficient, healthy, moisture free building envelope there is a clear need to manage the balance of Heat, Air and Moisture movement (HAMM) throughout the building’s life cycle from design, construction, completion and use.