When you unblock someone on Facebook can you immediately see their posts again?

[Rick Asstley]

I just unblocked someone but I can't see their posts... Did they block me as well or does it take a while to show?

[withaC]

Rick Ass.,

Are you referring to "a former FB friend" or a "non-FB Friend"? If a former, you'll need to send them a new friend request. Will they accept? :/ Can you see their profile at all?

I have blocks on non-friends [folks who I don't want to know that I am friends w/someone] and when I test-unblocked one....
Are you sure you want to unblock Donald Duck?
Donald Duck may be able to see your timeline or contact you, depending on your privacy settings
Tags you and Donald Duck previously added of each other may be restored
You can remove tags of yourself on your activity log
Please remember you'll have to wait 48 hours before you can re-block Donald Duck.

[JeWeL]

After blocking someone in Facebook, all of his communication channel will be broken with you. Blocked person could not see your Profile/Timeline,Status Update, Your activities etc. Your Profile/Timeline will not be visible to Blocked person's search results.

Because Blocking is mutual, so Blocked person's Profile/Timeline also will not be visible to your search results. It's might not be applicable in some cases like some third parties applications.

As you block someone anytime in Facebook, in the same way you can unblock someone in Facebook at any time. But after unblocking will not reconnect you to the unblocked person. You have to add him back as your friend.