Gyprock is frequently used as plasterboard for walls. These boards are made of gypsum cores that are folded in order to protect and reinforce it. This is typically used as an internal board for long lasting walls. It is very durable and is typically used in schools, factories, hospitals, homes, shops and offices. It is possible to wallpaper, paint and apply texture compounds to it.
Step 1 – Size & Thickness
These sheets can be installed vertically or horizontally. They can come in all different sizes. Normally larger sheets will have fewer joints, which means it will have a greater chance of breaking when transported. Determine how many sheets are needed for the area that is being covered. A ½ inch thickness is the most popular, though ¼ inch sheet are used to overlay over existing drywall. Each area will have its own requirements for building code.
Step 2 – Repair
Repair any damage that on the area where the gyprock will go. Fill in any exterior cracks with foam. Deal with any moisture damage, termites and other damage.
Step 3 – Measure
Make measurements where the gyprock will be installed. It may be necessary to cut the gyprock, but try to have as few joints as possible. Cut the pieces with a razor knife. Use score lines and then pull apart the pieces from the back side. Curve the paper backing so it is trimmed properly. Using a straight edge guide can be a good way to get the cut desired. For any irregular openings a hand drywall saw is best.
Step 4 – Locate Studs
A stud finder will be necessary if the studs are not visible. Not all studs are between 24 to 16 inches. When the studs are exposed, run some masking tape along the floor and mark where each stud occurs.
Step 5 – Attach Gyprock
Have some help when holding up the sheet. Use a drill and screw in the gyprock on the vertical studs. There are some situations where extra screws can help. However, a screw every 8 inches is the best. If possible, install the screws as close to the edge as possible. This is so the screw heads can then be covered by trim or baseboard.
Step 6 – Seams
Apply mud or caulking to the seams. Lightly dampen the tape with water and put the tape over the joint. Flatten the tape as much as possible. If there is any mud of filler left on the drywall or gyprock blade then do not reapply it. A clean blade is important to produce a professional looking finish. These blades and putty knifes can collect dust so clean it after each swipe. Allow the taped joints to dry for 24 hours before applying another coat.
Step 7 – Mud
Special tool can be used for cornering for both outside and inside corners. A wide putty knife will need to be used and 2 to 3 coats of mud will need to be applied. Apply mud to the screws to fill in any of the screw dimples. It is a good idea to practice on some old pieces of gyprock to hone your technique.