f&b paint eggshell question

[wfrances]

i need to paint 4 outside doors , they are under cover so wont get wet .
i was going to paint them f&b eggshell, but what would be best interior or exterior?
what is the difference?
i have the interior undercoat/primer in the colour i need ,can i use that or have to buy the exterior undercoat/primer?
any help appreciated.

I would personally buy exterior, because although the doors wont get rained on as such, they'll still be exposed to moisture in the air and frost etc..

I wouldn't use f&b exterior paint. Ours peeled very quickly even though it was well prepped and we used f&b undercoat. Dulux weather shield has held up much better although the colours weren't quite as gorgeous. I can live with that in exchange for not having to repaint every 3years.

And definitely don't use interior eggshell!