Purple drywall is the type of drywall most resistant to both mold and moisture. Purple Board is great to use anywhere that may need moisture protection, like the exterior of a building or a ceiling. It is also resistant to dents and scratches, making it one of the best types of drywall for high-traffic areas.
Drywall used on ceilings should be the type marked MR (moisture resistant), But most people use standard drywall, the same as on walls.
Square edge plasterboard is used for ceilings more commonly than walls - but if you are plastering the ceiling then you can use either type.
Ceiling drywall: Ceiling drywall—sometimes called sag-resistant drywall—is designed for ceiling panel installation. This option is lighter and less dense than regular drywall to prevent sagging and make it easier to install the drywall overhead.
Drywall is designed to be used in the walls of homes, not the ceiling. It's still possible to use it, but you'll need to add a vapor barrier first and then make sure it's sealed properly at the joints. If it leaks, it will ruin whatever is on the other side of your drywall.
Although you can drywall over plaster, you will slightly increase the wall thickness by doing so.
It is entirely possible to plasterboard an existing, concrete ceiling or new ceiling by yourself with some special techniques and lifting tools.
The standard drywall thickness to use on ceilings is 5/8-inch drywall. What are some other common names for drywall?
The most common plasterboard thickness is 9.5mm and 12.5mm. For ceilings is used 9.5mm thick plasterboard and for walls – 12.5mm.
It's best to start by repairing any cracks or holes in the wall. Sand and wipe the entire wall down. Apply a coat of drywall primer and allow it to dry. Roll and brush on 2-4 coats of paint.
Nails or screws? In terms of the Australian Standards, nails are still permitted when installing plasterboard. However, most professional plasterers now prefer using screws with a collated screw gun due to its ease of use and speed on site.
Excessive moisture in the air, or water coming from a leak in the roof or a plumbing issue, can also weaken plasterboard and cause it to crack. Other factors. There are a few other possibilities, such as if the material was low quality to begin with or if the plaster was improperly mixed.
15mm Acoustic plasterboard is denser than standard plasterboard for increased sound insulation. Use these 15mm soundboards to soundproof walls and ceilings and reduce airborne sound. Soundproof plasterboard is supplied in full size 2400mm x 1200mm (2.88sqm) and half size 1200mm x 1200mm (1.44sqm).
When working on a ceiling the most lightweight boards are the best option. The appropriate thickness for ceiling plasterboard is usually 9.5mm to 12.5mm - you will see this type of thickness on types of plasterboard that are specifically designed for ceilings, such as acoustic plasterboard.
Both lightweight and standard drywall look virtually identical. There is no significant difference in appearance, and you can use either material for walls and ceilings in standard residential applications.
Conventional Ceiling
A conventional ceiling construction type is commonly found in homes. These ceilings have a standard drywall finish and are made of lower-cost materials, requiring easy installation.
5/8-inch drywall is generally reserved for use on ceilings and in commercial construction jobs.
Yes, you can!
10mm plasterboard is a fine choice for ceilings, provided it's an official product that is of high quality.
Materials of ceiling boards are of variety as gypsum board, fiber cement board, wood, aluminum and vinyl etc. Each type has different advantages and disadvantages and offers different beauty.
The Knauf 12.5mm Wallboard Plasterboard is one of Knauf's best-selling drywall products. Knauf 12.5mm Wallboards are easy to install and can be used as ceiling and wall linings, as well as for wall applications between rooms.
The RSIC installation guide calls for a 1/4″ gap between the ceiling gypsum board and the perimeter of the ceiling. This gap should then be filled with acoustical caulking. The gap is then taped and finished like a regular ceiling / wall intersection.
Thickness Matters: Drywall Specifications for Ceilings
5/8-Inch: Required for fire-rated assemblies and recommended for 24-inch on-center framing. 3/4-Inch: Used in specialized applications for enhanced fire resistance or sound control.
You should also nail in noggings between the joists where the long edges of the plasterboard will fall. Then use 38mm plasterboard screws to fix the board to the joists and noggings. Screws are a better bet than nails for when renovating, as hammering can potentially disturb or damage the joists.
Painting directly onto plasterboard is often sufficient and saves time and money, especially because you'll need to wait for plaster to completely dry before painting.
1. Make sure studs and ceiling framing are located at 600mm maximum centres.