Originally Posted By: kmcmahon This post was automatically imported from our archived forum.
This is how my state states it: ( separation wall which is fire rated!!)
1. The walls and ceiling between an attached garage and any portion of the dwelling, including attic or soffit areas, shall be 3/4-hour fire-resistive construction or shall be constructed as specified in any of the following:
Comm 21.08(1)(a)1.a.
a. One layer of 5/8-inch Type X gypsum drywall shall be used on the garage side of the separation wall or ceiling.
Comm 21.08(1)(a)1.b.
b. One layer of ? -inch gypsum drywall shall be used on each side of the separation wall or ceiling.
Comm 21.08(1)(a)1.c.
c. Two layers of ? -inch gypsum drywall shall be used on the garage side of the separation wall or ceiling.
Comm 21.08(1)(a)2.
2. For all methods listed under subd. 1., drywall joints shall comply with one of the following:
Comm 21.08(1)(a)2.a.
a. Joints shall be taped or sealed.
Comm 21.08(1)(a)2.b.
b. Joints shall be fitted so that the gap is no more than 1/20-inch with joints backed by either solid wood or another layer of drywall such that the joints are staggered.