Plaster-Boarding

Filed Under: Do it yourself, Home repair, Remodeling    by: ITC

Plasterboard is a sandwich of gypsum plaster held between two layers of thick paper. You can plaster lower it, paint or paper it to match other walls. It is ideal for cladding a timber framed partition, the panels being simply nailed in place.

Always handle pasterboard carefully; it is easily broken. If you intend plasteringit, fit the gray side outermost, but if you want to paint or paper over it leave the ivory colored side showing.

Fix all the full size panels to the framework first then the smaller pieces, completing one side at a time. If the partition does not span the rppm filly, work from the outer end towards the wall.

To cut plasterboard, use a sharp knife and steel straightedge; after cutting through one side, stand the board on edge and snap it back to break the plaster. Cut through the remaining paper layer. For right-angle cuts mark both sides of the panel and cut through from both sides. Trim full panels to measure about 1 in less than the floor-to-ceiling height; this will allow you to push them up tight against the ceiling with a “footlifter” before nailing.

Fix the board to the frame, using 11/4in galvanized plasterboard nails or screws, spacing them at 6in intervals and working outwards from the center of the panel. Keep the fixings at least 11/2in from the edge of the panel to prevent them from breaking the edge. Drive the nails or screws in so that their heads come just below the surface. This is enough to allow for a thin skim of filler.

To fill the joints, apply a layer of proprietary joint filler then press in a length of paper or fiberglass jointing tape. Apply more filler up to the level of the surrounding plasterboard, feathering the edges with a damp sponge. When dry, apply one or two thin layers of joint finish, again feathering the edges.

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