Basecoat cure times

[Markas]

Have begun to tackle my (c)rusty undercarriage. Have taken the driver's side sill back to bare metal in the rusty bits, primed and applied stone chip. Have base- and clearcoats ready to go on, but have never used 2 stage systems before. Have painted Triumphs and Wolseleys previously which use solids - good old British Leyland Vehicle Colours
Can anyone tell me how long I should allow the basecoat to cure before applying the clearcoat? Basecoat is U-pol in a rattle can.

[kloonsy]

In this warm weather as soon as it's matt. Don't leave it more than 6 hours before lacquering

[Markas]

In this warm weather as soon as it's matt. Don't leave it more than 6 hours before lacquering

Thanks for that. I'm making the most of the weather this weekend.
Didn't do the job during the summer as I should have done when I first got the van as I was too busy trekking off everywhere in it having fun!!

[Markas]

Thanks for the advice Kloonsy, it worked a treat. No more scabby driver's sill