How To Tape Recessed Joints On Plasterboard
Self-adhesive fibreglass or paper tape is bedded into plasterboard joints, using three layers of compound, to help strengthen them and make them seamless.
Use a base coat compound for the first two layers, then a finishing compound for the last layer.
Or you can use an all-purpose compound for all three coats.
Fibreglass tape is the easiest to use, but it isn’t as strong as paper tape and is not suitable to be used with pre-mixed compound.