What’s cooking – measuring PM2.5

To ensure indoor air quality measurements in homes are accurate and repeatable, we need standards that clearly define sensor types, calibration methods, sampling frequency, averaging periods and measurement locations, says the University of Nottingham’s Benjamin Jones

Site test – testing heat networks before handover

Acceptance testing allows developers to see if heat networks are working before handover. The tool is being used across 20 developments, says FairHeat’s Gareth Jones, enabling issues that could lead to poor operation to be identified

What went wrong with smoke ventilation at Grenfell Tower

The Grenfell Tower fire-safety investigation report found faults with the building’s smoke-extract system, among other failures. Liza Young finds out what went wrong, and what the industry can do to prevent a similar disaster