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Wall And Ceiling Gypsum Boards


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Nails, screws and adhesives are used to put gypsum board on interior walls and ceilings. Gypsum board should not be applied until the moisture content in the wall or ceiling framing is less than 15 percent. Low wood moisture content reduces nail pop ups in the gypsum board. Nail spacing is the same in horizontal and vertical gypsum board applications but different for ceilings or walls. Gypsum horizontal and vertical wall nails are spaced 150 mm to 200 mm apart and ceiling nails are spaced 125 mm to 175 mm apart. Nails are placed no closer to the edge of the board than 10 mm . Screws are placed no further apart than 300 mm on ceilings, and 400 mm on walls, when studs and joists are 400 mm on centre. Screws are placed no further apart than 300 mm when studs are 600 mm on centre. Full sheets of horizontal gypsum boards are better at reducing the number of wall vertical joints than vertical boards. Place the joints at windows and doors. If that is not possible, stagger them on the wall studs and other framing members. Gypsum board edges are centred on studs and other framing members. Use nailing blocks between studs when the stud spacing is greater than 400 mm and the board thickness is less than 10 mm. When a single gypsum board layer is applied, put it on the ceiling before covering the walls. Unattached ceiling gypsum boards can be held in place by braces that are 25 mm longer than the height of the ceiling. 2 ply laminated board applications require a 9.5 mm thick vertical panel undercourse and a horizontal 9.5 mm finish panel. Some undercourses are used because of their sound deadening capability. Nails are driven below the surface of the finish panel to form a small dimple. Dimples and/or panel joints are filled and finished with joint cement, perforated tape and sanding when the panel application is completed.
                                         



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Wall And Ceiling Finish Links

1. Wall And Ceiling Gypsum Board.
2. Double Nailed Gypsum Wallboard.

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Ronald Hunter
           
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