Spread a drop cloth over the floor beneath the wall. Apply painter’s tape around the adjacent surfaces to keep the varnish from spreading to these areas.
Open the can of latex varnish, and stir it thoroughly with the stir stick.
Load the angled trim brush with varnish, and paint around the perimeter of the wall to cut in the varnish.
Pour the varnish into a paint tray, and load a paint roller. Apply the varnish over the wall with the paint roller, applying it in a thin, even layer.
Brush over the wet varnish with the 4-inch paintbrush to remove air bubbles created with the paint roller. Continue working until you remove all air bubbles with the paintbrush.
Allow the varnish to dry completely. Remove the painter’s tape and the drop cloth.