A wall painting assembly includes a handle unit for gripping. A shield is disposed on the handle unit for abutting against trim on a wall of a room. The handle unit is biased into a first position on the shield and the handle unit is urgeable into a second position on the shield. A roller unit is hingedly coupled to the handle unit to have paint applied thereon. The roller unit is urged downwardly when the handle unit is urged into the second position on the shield to apply the paint to the wall of the room. Additionally, the shield inhibits the paint from being applied to the trim on the wall. The roller unit is lifted upwardly when the handle unit is biased into the first position to inhibit the paint from being applied to the wall.

A roller cover and associated pair of cams attachable to opposite ends of the roller cover. Each of the cams has an outer diameter extending radially outwardly beyond an outer diameter of the roller cover a predetermined distance for maintaining the outer diameter of the roller cover a corresponding distance from the surface being coated during rotational movement of the roller cover over the surface to act as a thickness gauge for the coating being applied to the surface.

A roller cover and associated pair of cams attachable to opposite ends of the roller cover. Each of the cams has an outer diameter extending radially outwardly beyond an outer diameter of the roller cover a predetermined distance for maintaining the outer diameter of the roller cover a corresponding distance from the surface being coated during rotational movement of the roller cover over the surface to act as a thickness gauge for the coating being applied to the surface.

A roller cover and associated pair of cams attachable to opposite ends of the roller cover. Each of the cams has an outer diameter extending radially outwardly beyond an outer diameter of the roller cover a predetermined distance for maintaining the outer diameter of the roller cover a corresponding distance from the surface being coated during rotational movement of the roller cover over the surface to act as a thickness gauge for the coating being applied to the surface.