Repairing a hole in gyprock (also known as sheetrock, plasterboard
or drywall) is quite simple with a few minor differences in methods of
repair depending on how large the hole is. Here is the method for a
large hole.
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1.
Purchase a sheet or offcut of Gyprock plasterboard of the same
thickness as originally used.
Cut a rectangular or square piece of
Gyprock plasterboard, slightly larger than the hole.
Place new plasterboard piece over hole, draw around and mark
diagonals (see Diagram 1). |
Diag
1.
Draw around hole, mark diagonals. |
2.
Taking care not to puncture plumbing or cut electrical wiring,
follow Diagrams 2, 3 and 4.
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Diag
2.
Cut along diagonals to corners with handsaw. |
Diag
3.
Cut face paper along outside lines with Stanley knife.
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Diag
4.
Break away and remove centre pieces.
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3.
Using a small amount of Gyprock Cornice Cement, Base Coat
100 or Base Coat 120, stick two blocks of Gyprock
plasterboard to the inside surface of the wall, allowing
about 50% to be exposed clear of the template line (see
Diagram 5).
Ensure that the cut edges are clean to ensure good
adhesion of the plasterboard block. Allow one hour for
cement to set hard. |
 Diag 5.
Plasterboard blocks stuck in position |
4.
Apply Gyprock Cornice Cement to the blocks and gently position the
pre-cut plaster-board template into the hole and leave for 1 hour.
The previously painted surface should be sandpapered with 120 grit
sand-paper before applying easy tape along the full length of the
joints.
5.
Apply a thin layer of Gyprock Base Coat 120, covering tape
to a width of about 200mm. Use 100mm Broad Knife. Allow 90
minutes to dry. Remove any excess and lightly sand if
necessary
6.
Apply second coat of Gyprock Base Coat 120 to a width of about
30Omm using the 20Omm Broad Knife.
Allow 90 minutes to dry. Remove any excess and lightly sand if
necessary.
7.
Apply third coat of Gyprock Pre-mixed Total Joint Cement with
200mm Broad Knife to width of about 600mm.
Feather edges with a wet paint brush. Allow 24 hours to dry.
8.
Using Gyprock Sand Paper and a Sanding Float, gently sand the dry
joints to a smooth even finish. Hold the float diagonally across
the joint taking care not to scuff the paper face of the Gyprock
Plasterboard where it meets the cement. |
