Klober is emphasising the importance of correctly installed roofing ventilation to address this challenge. These measures support mechanical extract ventilation which help to balance airtightness with effective airflow, ensuring homes meet regulatory requirements and provide healthier, more comfortable living environments.

Overheating has become a pressing topic in recent years and has led to the introduction of Part O of the Building Regulations, which specifically aims to limit solar gains and provide sufficient ventilation to remove excess heat. This responds to both the increasing climate change issues, while also helping to improve building efficiency.

This is a problem that is only going to get worse, with temperatures continually rising. According to the Met Office’s State of the UK Climate 2023 report, the number of 'hot' days (28°C) has more than doubled, and 'very hot' days (30°C) more than trebled for the most recent decade (2014-2023) compared to 1961-1990. In 2023, the UK experienced its eighth warmest summer since 1884, with June the hottest on record in the country.

Under the CIBSE TM59 methodology, properties can be considered to be overheating if the internal temperature of bedrooms exceeds 26°C for just a small percentage of the night, and this can have negative impacts on peoples’ health, wellbeing, and productivity. It can also be dangerous for the most vulnerable groups of people. In a report from Arup that was commissioned by the Climate Change Committee however, it revealed that about 55% of the UK’s housing stock is classed as overheating in the current climate.

Commenting on the importance of effective ventilation strategies in meeting the standards set by Part O of the Building Regulations, Nick King, portfolio manager at Klober said: “Overheating is already a problem for many homes – with stifling temperatures being uncomfortable and known to cause issues such as exhaustion and generally triggering productivity to drop. It’s vital that, as a nation, we get on top of this issue, given that the global climate is expected to go up by a further 1.5 - 2°C in the next few decades.

“Where, for example, Mechanical Extract Ventilation (MEV) systems are used, it is essential that effective outlets are in place to ensure their efficiency. Using high-quality roofing ventilation solutions helps to combat the overheating challenge while supporting overall building performance.

“There are different options available for ventilating the roof space, with different vents that can tackle different scenarios. By bringing awareness to the topic, we can begin to reduce this issue of overheating in the home, before the problem escalates.”