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As freezing temperatures, ice and snow continue to affect large parts of the UK, safety experts are warning that winter conditions significantly increase the risks associated with scaffolding, temporary works and working at height, placing construction workers at heightened risk if sites fail to adapt.
Latest Health and Safety Executive (HSE) statistics show that falls from height account for around one in four workplace deaths, with construction consistently the worst-affected sector. Slips, trips and falls, commonly linked to icy, wet and poorly lit conditions are also among the most frequent causes of non-fatal injuries reported to the regulator, making winter a particularly high-risk period for outdoor work.
Cold weather turns routine site activities into high-risk operations
Winter conditions introduce a combination of hidden and compounding hazards on construction sites, including:
• Ice and frost reducing grip on scaffolding platforms and access routes
• Snow concealing defects, uneven surfaces and trip hazards
• Freezing temperatures affecting materials, fittings and equipment
• Reduced daylight hours impacting visibility and situational awareness
• Cold-related fatigue and reduced dexterity increasing the likelihood of human error
HSE guidance makes clear that risk assessments must be dynamic and reviewed whenever conditions change, a requirement that becomes critical during periods of severe or fluctuating winter weather.
"Winter exposes weaknesses in planning and supervision"
Catherine Storer, Executive Director at Essential Site Skills, warned that cold weather often highlights existing shortcomings in site safety management: "Winter doesn’t introduce new hazards, it magnifies the ones that already exist. Ice, snow and freezing temperatures reduce margins for error, particularly where scaffolding and temporary works are involved.
"When falls from height already account for around one in four workplace deaths, winter conditions leave very little room for mistakes."
Temporary works and scaffolding require closer scrutiny in winter
Temporary works and scaffolding systems are particularly vulnerable during cold weather, with increased risks linked to stability, access, surface conditions and inspection regimes. Safety experts are urging dutyholders to increase monitoring and ensure weather conditions are actively considered as part of ongoing site control measures.
Storer added: "Winter conditions demand greater vigilance. Inspections may need to be more frequent, access routes reassessed daily, and work paused when conditions become unsafe. These decisions rely on competent supervision and clear communication on site."
Why winter toolbox talks matter
Safety specialists emphasise that winter risk management must go beyond paperwork. Regular site briefings and toolbox talks are a key control measure during colder months, helping workers understand how changing conditions affect day-to-day risks around scaffolding, access systems and temporary works.
Essential Site Skills has published practical guidance on this approach in its winter toolbox talks on protecting your workforce when temperatures drop, outlining common cold-weather hazards and the types of on-site discussions supervisors should be having with their teams throughout the winter period.
"Toolbox talks are especially important in winter because conditions can change daily," Storer explained. "They help translate risk assessments into real-world awareness, keeping winter hazards front of mind for everyone on site."
A timely reminder for the construction industry
With winter weather expected to continue across the UK, safety experts are urging construction firms to treat cold conditions as a trigger for action, not an inconvenience. Increased oversight, clear communication and active management of scaffolding and temporary works are being highlighted as essential steps to reduce the risk of serious incidents during the colder months.
