Optimising use of thermal mass

The following are recommendations for optimal use of thermal mass in dwellings

- A high standard of insulation and airtightness – although this is now a prerequisite for all new buildings to conform to the latest building regulations.

- A medium to high level of thermal mass, typically provided by Tarmac products within ground floors, internal floors, external walls, separating walls and internal partitions, with suitable finishes.

- A southern orientation to allow passive solar gains in the winter (heating) season, and to help provide effective shading in the summer (particularly where overhangs are used).

- A sufficiently clear view of the sky from the south.

- Well insulated glazing, and ideally an above average area of glazing on the south façade to maximise solar gains during the heating season.

- Windows that provide effective ventilation, particularly during summer nights. The design must account for any security implications.

- Adequate shading: a requirement that will become increasingly important in the future for all types of dwelling.

If you are involved in specifying, designing or constructing non-residential buildings, find out more about the thermal mass benefits of Termodeck. (new window).

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Did you know?

Fact 13

Provides an instant work platform

Precast concrete structures and in particular floors and staircases provide an early, secure and broad platform from which subsequent site activities can be undertaken. This solid footing helps speed up construction and gives managers confidence that operatives can go about their work safely.

See more in Why Masonry?