Choosing Drywall

Choosing drywall

Drywall, also commonly referred to as sheetrock or wall board, is a lightweight cost efficient product for use on interior walls or ceiling panels in new construction, renovation and repair work. In residential construction the most commonly used sizes are 4 x 8 foot x ½ inch. Other sizes, thicknesses and specialty boards may be stocked and/or available by special order.


For small and medium sized projects, most DIYers will choose to use the 4 x 8 foot x ½ inch size because it offers the best value in per-sheet price and is the easiest to handle, with each sheet weighing just over 50 pounds. Drywall can be nailed or screwed to wood or metal studs. When used on ceilings it is also sometimes glued up to help keep it from sagging over time. 

In addition to regular drywall products for standard interior applications, specialty products offer additional benefits. Type X, 5/8-inch thick panels offer additional fire resistance where certain fire-ratings are required and because of their extra thickness can also offer increased room to room sound control. Moisture resistant drywall is typically used in areas prone to moisture, such as bathrooms, laundry rooms, basements, garages, kitchens and utility rooms.





Common Terms

Regular 1/4, 3/8, 1/2,
5/8 inches
8, 9,10,12 feet
• Residential interior wall and
  ceiling construction
• Ideal for basement remodeling

Drywall, Board, Rock


Mold Resistant 1/2, 5/8 inches
8, 9,10,12 feet • Mold resistant board products
  offered include USG
  National Gypsum (XP) and
  American Gypsum (M-Bloc)
• Use paperless backing and
  special coating to prevent mold
  from growing 
Mold Board, Mold Proof
Moisture Resistant 1/2, 5/8 inches 8, 10, 12 feet • Moisture resistant board
  products offered include
  American Gypsum (M-Bloc)
  and GP Green Board
• Special surface coatings to make
  boards resistant to moisture
• Also used as tile backer in limited
  wet areas, e.g., bathroom and
  basement walls, plus kitchens,
  and laundry and utility room
Greenboard, Indoor tile backer board
Fire Resistant 5/8 inchType X

8, 9,10,12 feet • Type X core can achieve fire
   resistance ratings
• Commercial and multi-family
  construction, where fire-rating is
• Extra thickness can also improve
  room-to-room sound control 
Type X, Fire Board,
X Board

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