How Hot is Too Hot

[SATracker]

Hey Mike, my understanding is that you really shouldn't wash & wax a car when the paint is hot so: is there a temperature or technique (maybe placing a hand on the paint surface for 10 seconds) or something that indicates a surface is too hot to wash & wax?

 

[fancyfootwork]

It's not so much the temperature as it is direct sunlight. It can be 100 degrees and humid outside but you can be under shade washing a car and it will be alright. The average water temperature is probably around 65-70 degrees. This will cool down the paint quickly.

Direct sunlight in very hot humid weather will cause streaking and water spots faster than you can rinse your car.

 

[SeaJay's]

The paint being hot will affect how some products work. Always try to work in the shade. I know it's not always possible though. So a wipe on wipe off product would probably be best when it comes to waxing. Also, keeping the car wet will help keep it cool.