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 11

Protects against fire

Concrete is fireproof. It protects against the spread of fire between rooms or properties and it cannot catch fire, burn or drip molten particles. In tests, concrete performs consistently well in fire, often requiring only minor repairs to make good.

See more in Why Masonry?