Mac Moonfire
SAWHORSE
Hi,
I have a reno consisting in adding a residential suite in a single family dwelling.
The goal is to achieve a 45min fire resistance rating on an existing 2x4 wood stud wall 16"o.c. regular 1/2" drywall on the house side and mineral wool between studs.
I know those 2 things:
Thank you
I have a reno consisting in adding a residential suite in a single family dwelling.
The goal is to achieve a 45min fire resistance rating on an existing 2x4 wood stud wall 16"o.c. regular 1/2" drywall on the house side and mineral wool between studs.
I know those 2 things:
- 30 min fire resistance rating for walls one layer of 1/2’’ regular drywall on each side of the wall is required
- 45 min fire resistance rating for walls one layer of 1/2’’ Type X drywall on each side of the wall is required
- could the addition of 2 layers of 5/8" type-X on the suite side achieve the 45min?
- could the addition of 2 layers of 1/2" type-X on the suite side achieve the 45min?
- Does the mineral wool change anything at all?
- How can I calculate that? Where exactly can I find the information?
Thank you