ACTIVair technology

Improves the indoor air quality to make indoor spaces healthier

We spend 90% of our time indoors, in schools, offices, hospitals and our homes. We take it for granted that the air we breathe is clean and pollutant-free, as fresh as the air in our glorious rolling countryside.

Impurities found in both our working and living spaces can cause health problems and a reduction in our general well-being. Pollutants called VOCs – volatile organic compounds – are naturally emitted into our homes, offices and schools by people, pets, cleaning products as well as furniture, carpets, paints and varnishes.

Some of the health problems VOCs can cause

People often complain about health problems after extended periods of time spent indoors. Many of these symptoms can be attributed to VOCs:

  • Headaches
  • Nausea
  • Lack of concentration
  • Eye irritation
  • Fatigue
  • Breathing problems

Why formaldehyde is the most important VOC

You can’t see formaldehyde, or smell it. Therefore there is no way of knowing what concentrations you are being exposed to on a daily basis.

Dr Crump, Director of the Institute of Environment and Health at Cranfield University, talks in this short video about the importance of indoor air quality.

There is a lot of research available on the effects of volatile organic compounds and indoor air quality. Read our desk research.

Converts formaldehyde into harmless compounds

ACTIVair is a new technology added to ThistlePro PureFinish plaster, Rigidur H plasterboards, Rigitone and Gyptone ceiling products.

The effectiveness of the ACTIVair technology has been tested by the accredited Eurofins laboratory. The test shows that ACTIVair decomposes 70% of the formaldehyde in a controlled test environment when 1m² of ACTIVair technology is installed per volume (m³).

The effectiveness of ACTIVair technology

ACTIVair makes the air up to 70% cleaner

Improving the indoor environment

Improving the indoor environment is a major consideration amongst clients and building occupants, most notably those concerned with sustainability and health and wellbeing. Good clean air can reduce health problems as well as enhancing healthy living in both our work and living spaces.

A case study from classrooms in Kallo in Belgium can be seen below. It demonstrated a decrease in formaldehyde concentration of 60% over 2 months when only the ceiling was refurbished with ACTIVair.

Furthermore, ACTIVair technology:

  • Contributes towards 2 BREEAM points under indoor air quality, as part of a management plan and handover test plan
  • Works through an emulsion paint finish 
  • Is recyclable through the British Gypsum closed loop Plasterboard Recycling Service (PRS)
  • Has no impact on the performance of the ceiling system regarding fire, acoustics and durability.


Rigidur H with ACTIVair technology

ThistlePro PureFinish

British Gypsum acoustic ceilings product range

Case Studies

Mary's Hospital, Kettering


Formaldehyde reduction is based on experimental data following IS016000-23 standards from 0.4m² to 1.4m² installed/m³ room.

Lifetime has been confirmed experimentally and analytically on a commercial board sample in the frame of a collaborative work with independent certified body ULE and Pr J. Zhang , University of Syracuse, expert in Environmental Chemistry and Engineering, Mechanical ventilation and Indoor air quality.

    St Mary's Hospital

    ACTIVair Case Study

    View the St Mary's Hospital Case Study.

    Case study

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