1. Stay hydrated
In hot weather it’s particularly important to stay hydrated. Consider bringing a fridge on site for the duration of the heatwave and keep it stocked with water. Physically intensive work (like what you’ll be doing on site) in heat will cause you to sweat more than usual, so make sure you’re drinking lots of fluids. It’s best to drink small amounts often so as not to become dehydrated.
2. Stay away from caffeine
As much as we all love our morning coffee, caffeine can be dehydrating, and is best avoided in high temperatures. If you really can’t do without a cup, keep it to a minimum, and make sure you’re drinking enough water to compensate.
3. Cross breeze
If you’re working inside you might be thankful to be out of the direct sunlight, but you could be missing out on the breeze too. Depending on the trades that are working on site, keep doors and windows at opposite sides of the building open to create a nice cross breeze.
4. Don't strip off
While you may be tempted to go for the bare-chested look under your high-vis, it actually won’t make much of a difference in cooling yourself down, and will leave you open to sunburn. Instead go for a loose, light-coloured cotton t-shirt.
5. Keep out of the sun
Where you can, keep to the shade. Take lots of breaks, and make sure people are rotating in and out of the sun.