Should I Use Green Board In Bathroom

Originally greenboard was used as a direct backer board for ceramic tile in highly wet areas such as showers or bathtubs but this usage began to be phased out in the 1990s.

Should i use green board in bathroom. In many cases you would need ceiling joists on 12 inch centers to use the stuff. Tub or shower surrounds can only be greenboard or drywall if you are putting schluter kerdi membrane or similar waterproofing on it although irc says that surrounds need to be cement board or fiberglass or similar products durock densshield hardi backer. Green board is highly efficient in bathrooms and kitchens where moisture is frequently in the air but it is not the drywall that should be set behind tile in your shower or any other areas where it can come in direct contact with water.

Greenboard weakens more than standard drywall does when it gets completely saturated. The mmr board is the new name for green board. There are also rules limiting its use in ceilngs cause it sags so bad.

I on the other hand have always used green board for the entire bath walls and ceiling due to the moist environment. Why it isn t recommended for bathroom ceilings. There are a few different options for drywall that will come in contact with water including cement board.

Cement backer board such as durock is best used for tile in highly wet applications such as shower stalls with greenboard and other water resistant drywall panels kept only to high humidity areas. Green board does not work. Many local building inspectors will tell you to avoid putting water resistant drywall on your bathroom ceiling and that s actually for your own protection even though using it that way may not be a problem.

If you don t want the tile to fall off the walls in your tub shower and kitchen. It is not adequate for tile backing and has no real advantages over plain old drywall a coat of primer and two coats of paint. The entire bath was gutted.