Garage - Living space conversion. Can I fill the floor with blown in?

[ndemge]

In the middle of converting the garage into 2 bedrooms.

I have the floor joists in to give the same height as the rest of the house. On 16" centers

The bottom of the joists are about 5-6" from the concrete floor below.

What is the best method to insulate this?

I did the floor on 16's so that I could staple in regular 16" bats, but could I just blow insulation into the gap? Vapor barrier needed?

This is the one part of the job I really don't know how to tackle.

[rabadger]

I would do the vapor barrier on the concrete floor. Once that stuff gets wet it will never dry out.

[Cole]

I would do the vapor barrier on the concrete floor. Once that stuff gets wet it will never dry out.

That is if you are going with the blown in cellouse.

I would go with bats and vapor barrier.

[ndemge]

Bats it is.

Bats will be suspended about 8" off the concrete floor.
Where would you put the barrier?

[Cole]

Towards the warm side.

So after you get the bats installed, run the vapor barrier.

[Cole]

If you want to, you can run a 6 mil barrier on the concrete itself + the vapor barrier on top of the joists.