Water Resistant Plasterboard

Water Resistant Plasterboard

Most of us are familiar with drywall or plasterboard. It is probably the most frequently used material for walls and ceilings. While regular plasterboard is a great option for most applications, in the tropics and where walls may be exposed to lots of moisture, regular plasterboard will tend to attract moisture and deteriorate faster than normal. A great alternative for these wetter applications is water resistant plasterboard.

What is Water Resistant Plasterboard? 

Water resistant plasterboard, or greenboard as it is often called, has a lot in common with regular plasterboard with the exception that the gypsum is covered with a thicker water resistant paper that is coated with a wax-like substance that makes it resistant to moisture. This special paper covering is often green in color, hence, the name greenboard. Where to Use Water Resistant Plasterboard
  • Water resistant plasterboard is a good choice for applications that will be exposed to higher humidity or elevated moisture levels. The key point to remember when considering water resistant plasterboard is that it is resistant to moisture, but not impervious to water.
  • Water resistant plasterboard is installed in the same manner as regular drywall. It is nailed or screwed onto the studs, the seams are taped, plastered and sanded and once it is cured, the surface can be painted or textured as desired.
  • For bathrooms and other areas that tend to be wet a lot, it is still recommended that cement board be used behind wall tiles. A good rule of thumb when considering cement board vs. water resistant plasterboard is that is the wall is going to be coming into direct contact with water, cement board should be used.