How to Fit Tapered Edge Plasterboard?

Fitting tapered edge plasterboard involves preparing the surface, securing the boards, and expertly finishing the joints to create a smooth, seamless wall or ceiling surface ready for decoration. The tapered edge is specifically designed to simplify the jointing process, allowing tape and jointing compound to be embedded below the surface level.

Understanding Tapered Edge Plasterboard

Tapered edge plasterboard panels feature edges that are slightly recessed. When two tapered edges meet, they form a small channel. This channel is essential for embedding jointing tape and multiple layers of jointing compound, resulting in a flush, level finish that is indistinguishable from the rest of the board once complete. This differs from square edge boards, which are typically designed to be plastered over the entire surface or require more effort to conceal butt joints.

Steps for Fitting Tapered Edge Plasterboard

Fitting tapered edge plasterboard involves several key stages, from preparation to the final joint finish.

1. Prepare the Surface

Before starting, ensure the surface you are fitting the plasterboard to is ready.

• Clean and Dry: As per the reference, "Make sure the surface is clean and dry." Remove any debris, dust, or moisture from battens, joists, or existing walls. Ensure the supporting structure is sound and level.

2. Cutting and Fixing Boards

Measure your wall or ceiling space accurately. Cut the plasterboard to size using a utility knife and a straight edge.

• Score one side, snap the board along the score line, and cut the paper on the other side.
• Fix the boards securely to the supporting structure using drywall screws or appropriate adhesive, following manufacturer guidelines. Screws should be slightly countersunk without breaking the paper surface.

3. Align the Boards

Proper alignment is crucial for effective jointing.

• "Place the tapered edge board on the wall or ceiling." Position each board carefully, ensuring tapered edges meet correctly where joints will be finished. Boards should be butted together firmly but not forced. Stagger the joints on adjacent rows if possible.

4. Jointing the Tapered Edges

This is where the benefit of the tapered edge is fully realised. The goal is to fill the channel created by the meeting tapered edges.

• Apply Jointing Compound: According to the reference, "Apply the jointing compound to the tapered joints." Use a suitable jointing compound (e.g., an all-purpose or taping compound) and a jointing knife. Apply a generous first coat into the tapered channel, ensuring it fills the gap completely.
• Add Tape: The reference states, "Place the tape over the joints for added strength." While the compound is still wet, embed jointing tape (either paper or fibreglass mesh tape, depending on preference and compound type) centrally along the joint. Press the tape firmly into the wet compound, removing excess compound from behind the tape with your jointing knife. Paper tape often requires a thin layer of compound applied before the tape, then embedding it.
• Apply Subsequent Coats: Allow the first coat to dry completely. Apply a second, wider coat of jointing compound over the tape, feathering the edges out onto the main board surface. Allow to dry. A third, even wider finishing coat may be needed for a perfectly smooth transition. Lightly sand between coats if necessary to remove imperfections (wear a dust mask!).

5. Finishing

Once all coats of compound are dry and smooth, the joint should be level with the surrounding board surface. Prime the entire surface, including the jointed areas, before painting or applying other finishes.

Essential Tools and Materials

Having the right equipment makes the job much easier and helps achieve a professional finish.

For more details on board types, you can refer to resources like Materials Market.

By following these steps, you can effectively fit tapered edge plasterboard, taking advantage of its design to create strong, invisible joints ready for final decoration.