Seal joints between plasterboard or other wallboard to prepare wall surface for painting or papering.
<ul><li>Spread sealing compound between boards or panels or over cracks, holes, nail heads, or screw heads, using trowels, broadknives, or spatulas.</li><li>Press paper tape over joints to embed tape into sealing compound and to seal joints.</li><li>Seal joints between plasterboard or other wallboard to prepare wall surfaces for painting or papering.</li><li>Apply additional coats to fill in holes and make surfaces smooth.</li><li>Spread and smooth cementing material over tape, using trowels or floating machines to blend joints with wall surfaces.</li><li>Sand or patch nicks or cracks in plasterboard or wallboard.</li><li>Work on high ceilings using scaffolding or other tools, such as stilts.</li><li>Mix sealing compounds by hand or with portable electric mixers.</li><li>Select the correct sealing compound or tape.</li><li>Remove extra compound after surfaces have been covered sufficiently.</li><li>Countersink nails or screws below surfaces of walls before applying sealing compounds, using hammers or screwdrivers.</li><li>Install metal molding at wall corners to secure wallboard.</li><li>Apply texturizing compounds or primers to walls or ceilings before final finishing, using trowels, brushes, rollers, or spray guns.</li><li>Check adhesives to ensure that they will work and will remain durable.</li><li>Use mechanical applicators that spread compounds and embed tape in one operation.</li><li>Sand rough spots of dried cement between applications of compounds.</li></ul>