Installing curb on a slab
 

My thought is to nail the first 2x4 to the slab with a Hilti then nail two more 2x4's on top.Is this wide and high enough?

Hi Phil,
Should be plenty high. Need to put some poly between the wood and the slab to keep moisture from the bottom warping the curb, though. :)

Bricks.

Phil,

what type of waterproofing are you doing?
This would help determine the route.

I agree with Matt. Bricks are the easiest, cheapest, *fastest way to do it.

*yeah, the foam curbs are fast if you happen to already have one, but.....by the time the average person can track down an appropriate foam curb, get it back to the house, and set it they could have already grabbed a dozen bricks at Homers and been done.

Bricks........4 sure.

Thinset some bricks to the floor.

Bricks here too. Even with a normal liner.

Mark: What size are those bricks,they don't look like the normal red brick 2 3/4x8x2 1/2.Exactly how wide and high should the curb be? Also,if i use brick do i still cover them with hardy board then the Kerdy?

Phil,
If you are using the KERDI system, you will just thinset the membrane to the brick and pre-slope. No need for cement board in those areas, though your walls will need either wallboard or cement board under the KERDI.
Shaughnn

If i use a standard brick,the curb will finish at about 2 3/4wx6" hi [stacking two bricks + mortar. Is this hi and wide enough?

Width is a matter of personal tastes. A general rule for finished curb height which I work by is "2 inches above shower pan". If I can use a system like KERDI and keep my inside height down, then my outside height *can* be lower if I want it to be.
Shaughnn

This problem my determine which system to use. I am bringing the shower out into the TILED floor about 6"which means that the curb will be installed on top of the existing tile.PS.I really don't want to remove the tile.

Phil, those are 4" thick 8 x 16 cinder blocks cut in half to 4 x 4 x 16. Thinset to floor and fill with deck mud. I sometimes use 4 x 8 x 2" brick pavers double stacked. There's a block company near my house and they have lots of random stuff to choose from.