Uncoated finish does exactly what it says on the tin.  We print onto the uncoated paper stock and then do nothing else to it.

However, the basic uncoated paper that we use can be matt, silk or gloss and so the type of base paper you select will affect the way you print comes out.  Matt uncoated gives a flat matt finish. Silk uncoated gives a smoother feel and a slight sheen to the print.  Gloss uncoated gives a more shiny base layer which is good for photos, but bad to write on with a ballpoint pen.