House currently has a 2 car garage that has two steps up into the house. Enter directly into the kitchen so no place for wet shoes coats, etc. I was thinking of adding a small mudroom in the garage before entering the house. I would make this the same height of the house.

I am guessing the best way to do this for fire purposes is framing the wall floor to ceiling with fire rated rock on the outside (as the rest of the garage is).

Move the steel self closing door to the entrance of the new room.

Could I then run floor joists on hangers from the new wall to the existing garage wall framing?
I would insulate under the floor, walls and ceiling as well as vapor barrier for both the floor and walls.

I dont think I would add any heat or ac to this room as it wouldnt be very large (dont kow how big yet, just enough for a bench seat coat hangers and shoe area to not drag in the snow/sand into the kitchen hardwood) and I figure the airflow through the current door would be sufficient. I could always enlarge the current doorway into the house so it looks better to the eye also.

Thanks for the thoughts.

 

The position of the new room isn't clear to me. Is it inside the current garage or is it extending the footprint of the house?

 

It is inside the current garage. The corner of the garage would be the mudroom. So i was going to use the inside wall of the current garage to bolt a ledger. Then frame the other wall floor to ceiling with ledger bolted to it (as the floor has to be about a foot to 2 feet above the garage floot) to hang the floor joists to the garage wall legder. Cross brace them also to eliminate bounce. I am not talking a huge room here. Just enough for a bench for shoe storage underneath and coat hooks. So the dirt doenst come into the house. If I needed heat I could wire up a small elec. baseboard... if it really needed it.

I know i would need to use firerated sheetrock...as well as fire rated door to garage.

Would it be better to use cinderblocks to build a new "foundation" under this instead.