Gypsum Wallboard (Drywall)

Gypsum wallboard is not required throughout a dwelling however it is widely used as an interior finishing material. Gypsum wallboard is required:

  • On the garage side of the wall between the house and garage.
  • In enclosed accessible space under stairs.
  • On a wall of a building less than 3 feet from a property line.
  • For separations between dwelling units where two or more dwellings exist in the same building.

Building Code

The State of Minnesota has updated the building code effective January 24, 2015. We are in the process of reviewing our website to make sure everything is up to code, but you should always review the State of Minnesota Building Code before beginning any project.

  1. Application
  2. Fasteners
  3. Special Rules for Ceilings
  4. Moisture Resistant Gypsum
  • Gypsum board may not be installed until adequate weather protection is provided. Gypsum wallboard intended for interior use may not be used in areas exposed to the weather.
  • Interior non-bearing studs may be 2 by 3 studs spaced not more than 24 inch on center (OC). Exterior or bearing walls must be 2 by 4 minimum and spaced not more than 24 inch OC.
  • Other framing supporting gypsum board, such as for soffits or furring, may be 2 by 2 material. If the furring is applied against a solid backing such as foam sheathing on a foundation wall, it may be 1 by 2 material.
  • All edges and ends of gypsum wallboard must occur on framing members except those edges and ends that are perpendicular to framing members. All edges and ends of gypsum wallboard should be in moderate contact except in concealed spaces where fire resistive construction or diaphragm action is not required.