Originally Posted by louie01
The house sits on a slab.I still need to know how to raise it "the garage floor" .And Iwas wondering if there is a website I can go to.-Louie
You would build a frame on the floor, just like you would if you were building a frame for a shed. The size of the wood framing material would depend on the height difference between the slab height and the finished floor height in the house. You would also need to take into consideration the type of finish floor you were going to put in. A tile floor would need a thicker subfloor then if you were just putting in carpet.
The frame part could be done two ways. Since the garage floor slopes to the front, you need to compensate for the slope to get the floor level. You could use all the same dimension framing lumber and shim the low side to the level plane and add support under the various gaps. The other way would be to scribe the framing material to the slope and cut the slope directly onto the lumber. This would need fewer shims.
As mentioned before, you would apply a vapor barrier over the slab and put the framing over the top. Then you would insulate between the frame and sheath the top.
If you wanted to put radiant floor heating, the scenario would be different.
The post would need to be more specific to be helpful.