Tape and jointing

The final decorative finish (painted, plastered, tiled, etc.) determines whether boards are taped and jointed or if a plaster skim coat is required. Benefits of taping and jointing over skim coats include the use of less material, less water and the requirement for lesser skilled labour as mistakes/blemishes can be sanded down. Where boards are taped and jointed generally a plaster finish is not specified, although this can be applied to improve air tightness, acoustic performance and durability. Where lining boards are taped and jointed only a primer should be applied prior to painting/decorating to omit risk of peeling paint, especially in humid conditions. A plaster finish coat achieves a consistent surface texture, provides air tightness for improved thermal and air tightness and improves the lining board's durability (although it can be prone to cracking at joints). Plaster skim finishes require more skill and water than basic jointing as the entire surface has to plastered simultaneously to avoid imperfections and visible joints.

Both finishes make use of angle beads for external angles and tape for internal angles. Additional beads can be used to form shadow gaps for bespoke/high end details. Accessories such as control joints/fire stopping compounds and deflection head detailing should be followed to meet manufacturer's guidance. Beads and form work are also available in various curved and flexible forms to aid curved walls and ceilings.