On Oct 7, 11:33*pm, wrote:
The formica vanity/sink in bathroom has seperated from wall, from 1/4"
to about 1/2" space. *What to do?

First you have to figure out why it separated, the solution depends on
what the root-cause problem is.

Did someone bump the vanity top and knock it loose? Push it back into
place and reattach the fasteners.

Has the floor sagged, causing the whole vanity to tilt one way or
another? Shim the vanity to get it level again.

Has the bottom of the vanity rotted causing the vanity to tilt? Fix
the water leak problem, then repair the rot damage.

Has there been an earthquake and the house was knocked off the
foundation? Fix the foundation first, then relevel the vanity.

Sorry to sound so obtuse, but we need to know why it has pulled away
form the wall.

Ken