Furring channels are perfect for residential plasterboard ceilings because they are 100% straight and true. Furring channels are fixed at 400mm centres to timber trusses (762mm centres) by means of adjustable direct fixing brackets dipped into furring channels and fixed with 32mm grabber screws.
Furring channel joiners are fitted into the ends of furring channels where longer than standard lengths are required.
Furring channels are levelled horizontally via a screw fixing into the elongated slot in the direct fixing bracket and adjusting the bracket up or down.
The 9mm gypsum boards are fitted, with tapered edges facing down, perpendicular to furring channels with 25mm drywall screws at 150mm centres.
Perimeters can be fitted with SIGMA Shadowline Plaster Trims to create a shadowline at the perimeter of the room – 20/30/50mm shadowlines are available. Perimeters can be fitted with galvanized angle trim for use with gypsum moulded cornices.
All plasterboard joints are fitted with 50mm self-adhesive fibreglass mesh tape and the entire ceiling plastered with 2 – 5mm thickness skimming plaster.
For more economical installations only joints and screws need to be flushed with jointing compound to a smooth finish.