Damp and dark homes across the UK are having a direct impact on the levels of serious health conditions being reported, according to a new report by leading roof window manufacturer VELUX®.

This VELUX Healthy Homes Barometer highlights a clear correlation between poor housing stock and ill-health in all countries across Europe. UK residents living in dark homes are revealed to be 27% more likely to report poor health conditions including asthma and chronic obstructive pulmonary disease. In addition, people living in unhealthy buildings in the UK with damp are 34% more likely to be suffering from health conditions.

Across Europe, one in six households are currently living in an “unhealthy” (meaning damp or mouldy) building, increasing their chances of illness by 66%.

Developed in collaboration with Ecofys, a Navigant company, Fraunhofer IBP, and Copenhagen Economics, the VELUX Healthy Homes Barometer examines the effects of housing on the health of people living in countries across Europe, along with the associated costs to society and ways to tackle the problem.

On the back of the findings, VELUX is calling for buildings to become more energy efficient and for the UK’s housing stock to be brought up to par.

Grant Sneddon, Product Manager at VELUX-GBI said “We know instinctively that living in unhealthy surroundings is bad for our health. This study reveals to just what extent those in the UK and Europe are suffering on account of their homes; and also the staggering financial costs to society of not bringing our aging housing stock up to par.”

Europeans living in an “unhealthy” building are more than 1.5 times (66%) more likely to report poor health, and 40% more likely to suffer from asthma, as those who do not.

Meanwhile, Europeans who suffer energy poverty – meaning they are unable to keep their homes comfortably warm in winter – are twice as likely to report poor health and nearly three times more likely to report damp in the home.

The costs of unhealthy buildings are not just felt by individuals either. The overall (direct and indirect) costs to European governments and societies of just two of the many diseases associated with damp living environments – asthma and chronic obstructive pulmonary disease – reach a staggering EUR 82 billion per year.

One solution is to modernise Europe’s existing buildings through energy efficient and healthy renovations. This would not only lead to improved health outcomes, lower societal costs and reduced CO2 emissions, but would also provide a much-needed catalyst to European economies. The Healthy Homes Barometer 2017 goes on to examine the level of private capital available for renovation in EU member states – EUR 30 trillion – and what would be required to help unlock some of that total to invest in renovation.

For the first time, using data from the European Commission’s vast Eurostat Database, the analysis provides new evidence on the relationship between housing and health.

The full report can be accessed by visiting

Concerned that Greenwood Airvac’s claims for the Equivalent Area (EA) and acoustic performance of some of its ventilation products may be inaccurate, Titon decided to submit Greenwood’s 5000EA ventilator and canopy (as well as Greenwood’s 5000EAW.AC2 and 2500AW.AC2 acoustic variants) and Titon’s own Trimvent Select, SF Xtra and SFX Sound Attenuator trickle vents for independent testing. These tests revealed a significant difference between performance data declared by Greenwood and the actual figures achieved during independent testing.

The independent EA testing, which measures airflow through the product, was conducted by the Building Research Establishment (BRE) and the acoustic testing by SRL Technical Services Ltd. The EA tests were carried out in accordance with UK Approved Document F (ADF) 2010 and the Scottish Technical Handbook 3.14.6 using the recognised test method to BS:EN 13141-1 clause 4. The independent testing substantiated the claimed performance data of the Titon Trimvent Select, SF Xtra and SFX Sound Attenuator trickle vents.

Greenwood’s 5000EA vent, known as Pyramid, and canopy is marketed in the UK as delivering 5000mm2 EA, yet the independent tests revealed the actual figure to be just over 4000mm2 EA. Similarly, the acoustic variant, 5000EAW.AC2, known as Pyracoust, only achieved 3634m2 EA. In addition, when these Greenwood products were tested for sound attenuation, the results show less attenuation than generally claimed.

No other products within the Greenwood portfolio were tested, as Titon’s research had only deemed that the products mentioned required further investigation.

Commenting on the testing, Tyson Anderson, Sales & Marketing Director at Titon said: “Titon prides itself on the accuracy of its stated products performance and test results and believes that the market benefits from factually accurate data derived from recognised test procedures. This data will help manufacturers and specifiers ensure compliance with Building Regulations and that the provision for ventilation in a dwelling is correct for its occupants’ health and wellbeing. All our test reports are available for reference and can be explained if required.”

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