What are the differences in primer?

Question

I am going to primer my whole room but the primer that I already own is for "semi-gloss" paint. I am planning on painting the room with flat paint though...does it make a difference because of the primer?

Answer 1

I have painted for 37 years and have never heard of a primer specifically for the sheen of paint you use..e.g...semi gloss,satin,eggshell etc..there are pirmers made esclusively for stained areas..and primers to simply prime new drywall/wood etc..but not one for any certain "sheen" of paint

Answer 2

Don't use FLAT!.  You'll never be able to wash the walls. Every mark will stay there until you repaint. Use satin or egg shell