Looking for advice on filling a gap between wall and sink

[Hassin Bin Sober]

10. "Floating" the wall with drywall mud is the way to go.

But that’s a little tricky for someone not experienced.

The process would be to load the portion of the wall with drywall mud and striking it off with a taping knife - the larger knife the better. You can start with a smaller knife to build it up in layers. Finishing off with with a 14 inch knife.

The lower edge of the knife, as you swipe sideways, follows the back of the sink and the top. The top edge of the knife feathers it out to zero.

Do several coats. The first coats will be rough and only meant to establish the new wall lines. Don’t make yourself crazy trying to get the first coats perfect. Layers are key. Sand and knock down “boogers” between coats.


I would use the dry mix bag 45 minute mud “hot mud” for the first coats because it sets up fast. Finish off with the blue top pre mixed mud. You CAN use the pre mixed for all coats but the thick initial coats may take a day or two to dry - which is ok if you have time. For a novice, slow may be better anyway.