I want to add a wall covering on top of my 5/8" type-x drywall in my attached garage in Minnesota. What limitations do I have other than not to use flammable/vinyl/plastic material?

What materials would anyone recommend?

  • 2
    Your question isn't entirely clear. Are you asking specifically about the firewall? Why do you want to cover it? What goal are you trying to achieve? – isherwood Oct 7 '19 at 18:37
  • I second @isherwood's call for more details - also where in the world are you in some places that may violate code. – J Crosby Oct 7 '19 at 19:46

The Code does not restrict material installed on top of “Fire wall” materials. (Btw, the 5/8” type-x gypsum board is only required on the garage side. It’s not required on the “living space” side.)

Also, you can have “holes” in the gypsum board, including electrical outlets, electrical switches, a door if it’s fire rated, etc.

Also, the garage cannot have a door opening directly into a sleeping space.


It is a "fire wall" only in that the requirement for 5/8" drywall is there so that if a fire starts in the garage, it will take 60 minutes before it burns through that thicker drywall and gets into the rest of the house (as opposed to 30 minutes for standard 1/2" drywall). What is on that wall in the garage is totally irrelevant to that issue, so you can cover it with napalm if you are so inclined (actually you cannot, but I was exaggerating to make the point).

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