Cold weather is upon us. Snow is on the ground and it’s barely 20°F outside. Your clearcoat doesn’t seem to be curing. Why?

Cold temperatures can have a significant impact on the curing of urethane coatings. As temperatures drop, the curing process slows down and can even stop when temperatures drop below 60°F in your shop. These conditions can result in a finish that may eventually dry, but will exhibit reduced durability, gloss, and repairability. Therefore, it is important to ensure your products, your substrate, and ambient spray temperature are all above 60°F to insure proper curing of your paint film.

Before you begin painting, remember these tips:
  • If you store your products in an unheated area, make sure they are brought in to warm above 60°F prior to mixing.
  • Make sure your ambient booth temperature is well above 60°F.
  • If the car you will be working on has been sitting outside or in a cold shop, make sure it has been given time to warm in the booth to raise the metal temp above 60°F.

Remembering these tips as temperatures plummet will help to ensure a successful paint job!


SU470LV is compliant for all markets and can be used under all PPG and NEXA AUTOCOLOR® branded undercoats and topcoats. It requires no additional reduction - it is ready-to-spray out of the can! SU470LV also contains a mica pigment that allows you to see the product as it is being applied.  SU470LV eliminates the need to carry multiple adhesion promoters on your shelf.  One product is all it takes to provide exceptional adhesion to bare, unprimed, automotive plastics.

See the attached product bulletin for additional information:

SU470LV Product Bulletin