Extreme heat reduces the time available to lay and compact asphalt on UK roads. Higher delivery temperatures and softer binders increase the risk of surface shoving and rutting. This requires careful planning rather than compromising standards.
Planning starts before boots hit the carriageway
The weather forecast must inform the work schedule. Contractors can organise shifts to avoid the hottest hours. Welfare arrangements need to include ample drinking water, regular breaks and vigilant supervisors looking out for signs of heat stress and fatigue.
Temperature control remains critical on site
Heat changes how asphalt cools, shortening the working window for finishing the surface. The asphalt supplier, delivery wagons and site crew must maintain communication to keep temperatures within specification during delivery, laying and compaction. Pressures to meet programme deadlines should never override safety or quality.
Adjusting plans preserves surfacing quality
Changing working patterns or pausing a shift when conditions are unfavourable is the right decision. Good surfacing practices apply equally in heatwaves or freezing conditions. Understanding site conditions and adapting the plan prevents quality from being sacrificed for programme delays.
What contractors should take away
According to Marc Copson, director at MAC Surfacing, “Roads don’t really melt. The binder gets softer, so the surface can shove and rut if you’re not careful. Plan around that. Look after the lads, watch the material, and don’t force a shift just because the programme says so.”
Heatwaves increase the demands on asphalt surfacing but do not change the fundamentals. Maintaining temperature control, prioritising worker welfare and adapting schedules ensure consistent results on UK carriageways.
