2mm typical build 1mm minimum depth of compound under tapeGYPROCK plasterboard (Recessed edge)Paper tapeFinish with slight convex camber over jointFill recessCover fastener headsBed paper tape and cover lightlyGyprock®plasterboard joints
Second coat1. Scrape or sand off any lumps and apply a second coat around 170–200mm wide using the 200mm broadknife finishing slightly wider than the previous coat.2. Smooth down the joint edges with a trowel to reduce the need for sanding later. Allow to dry for at least 24 hours. Finish coatGyprock Multi-purpose Joint Compound is suitable for use as a finish coat. Gyprock Final Finish is specially formulated to provide a smooth easy to sand finish for larger areas. 1. Scrape or sand off any remnants and apply a thin finish coat of compound approx. 250mm wide using your largest broadknife or trowel.2. Feather the joint edges with a trowel.3. Apply a coat to all fastener heads in different direction to the previous coat and extending around 25mm further beyond it. 4. Allow to dry for at least 24 hours before sanding.BUTT JOINTSThe process for butt joints is the same as that for recessed joints with the exception that each coat of compound extends further to create a gradual camber each side of the joint to minimise its visual impact.Tape coat1. Measure the length of GyprockPerforated Paper Tape you’ll need for the joint.2. Apply the first coat of Gyprock Multi-purpose Joint Compound centrally over the joint using a 150mm broadknife. 3. Bed the paper reinforcing tape into the centre of the joint. It is important to ensure that the tape is installed so that the natural centre crease points towards the joint. Cover lightly with additional compound and extend 120–150mm each side of the joint.
- The Corner, Firestop, Sandpaper, butt joint