On 14 Jan, 16:23, Fred wrote:
Hi. Can anyone tell me what is the difference between matt black paint
and blackboard paint?

Matt black paint is gloss black paint, with enough filler in it to
make it look matt for reflected light, hidden under a smooth-feeling
surface

Blackboard paint is similar, but with sufficient voodoo added (maybe
just more of the same filler) that it looks the same, but the surface
is mechanically rough enough to allow chalk to write on it.

If you paint a blackboard with matt black paint, you get something
that looks exactly like a blackboard, except that the chalk won't
stick!

You can also paint something with blackboard paint, then wax polish
over it (e.g. MDF video racking shelves). This gives you a very black
semi-matt surface (good for Goths and '80s retro fans) that looks good
and wears better than plain matt paint.