Should Roofing Work Stop as First Level 4 Heat Alert Issued?

A LEVEL 4 heat alert has been issued today by the UK Health Security Agency (UKHSA) for the first time.

The hottest temperatures are expected on Monday and Tuesday, with highs of 40°C possible across most of England.

The government’s Level 4 alert indicates that the severe heatwave could have impacts on transport systems, food, water, energy supplies and businesses.

Roofing contractors should be aware that there is also a high risk of failure of heat-sensitive systems and equipment, potentially leading to localised loss of power and other essential services, such as water or mobile phone services.

Travel could also be affected as delays on roads and road closures are possible, according to the Met Office.

The Met Office is warning that substantial changes in working practices and daily routines will be required.

Professor Penny Endersby, Chief Executive at the Met Office, said: “This is the first time we have issued a Red National Severe Weather Warning for extreme heat and the first time 40°C has been forecast in the UK.”

Level 4 Heat Alert

So, should roofers stop work on Monday and Tuesday in England where the temperature is expected to reach 40⁰C?

Although there is no set maximum temperature for working outdoors in the UK, the Management of Health and Safety at Work Regulations 1999 require employers to make a “suitable assessment” of the risks to the health and safety of their employees arising out of their work activity, and to take action “where necessary and where reasonably practicable”. The temperature of the workplace is one of the noted potential hazards.

As with all risks on site, roofing contractors should record a risk assessment to ensure that all mitigation and avoidance of risks to workers have been implemented.

High temperatures and sun exposure put employees at risk of dehydration, muscle cramps, heatstroke, sun burn, heat exhaustion loss of consciousness and death.

Additionally, in high temperatures, employees may become drowsy and less aware of dangers. Thermal discomfort, particularly likely in PPE, can lead to reduced efficiency and poor decision-making creating higher risks of accidents due to slips, trips, falls, poor manual handling, and injury from tools. Excessive sun exposure is harmful to the skin and may cause skin cancer.

Prof. Penny Endersby added: “We have seen when climate change has driven such unprecedent severe weather events around the world that it can be difficult for us to make the best decisions because nothing in our life experiences has led us to know what to expect.”

Coping with Extreme Heat

The TUC says employers should consult their workforce on working safely in extreme heat, but should consider allowing staff to work from home.

Otherwise, the TUC suggests sensible hours and shaded areas for outdoor workers, with outside tasks being scheduled for early morning and late afternoon, not between 11am-3pm when UV radiation levels and temperatures are highest. Bosses should provide canopies/shades where possible.

Other top tips from the UKGSA for staying safe in hot weather are:

• look out for those who may struggle to keep themselves cool and hydrated – older people and those with underlying conditions are particularly at risk
• drink plenty of fluids and avoid excess alcohol; make sure you keep water with you
• never leave anyone in a closed, parked vehicle
• walk in the shade, apply sunscreen and wear a wide-brimmed hat
• avoid physical exertion in the hottest parts of the day

Find out more on the common signs and symptoms of heat exhaustion and heatstroke.

>> Read more about the heat alert in the news