A must have if you are putting up the EZ wallboard. This allows one to apply a lot of pressure across each entire piece of wallboard to ensure that each piece is in full contact with the wall. When I first considered buying this J-roller, I thought that I might be able to DIY a comparable roller by using a paint roller. In hindsight, I know now that a paint roller would not have been able to sustain the same amount of pressure that I am applying with the roller.

Tiz a bit more expensive than one might want to pay and if you are only applying one box of wallboard, one might be able to get by without this roller. However, if one is applying a lot of board such as I did (840 sq ft) it is a relatively small but absolutely necessary tool to use in order to ensure the job is done properly.

I have included before and after pictures