St Aug over Bermuda Grass

[Hodge]

I have a customer requesting a bid on planting St. Augustine without removing the bermuda grass. She has stated the burmuda can be "scalped" and the St. placed on top and it will take over.
Is this the case or would it be better for me to remove the other stuff and just relay the sod. But if this is the case would you recommend plugs or sod, and which type of St. Augustine would be best for North Texas climate zone....
:)

[Mowingman]

I would hit the Bermuda with Roundup, then in about a week, scalp the Bermuda nearly to the groundand bag it. Finally, lightly till the area,( to loosen the surface a little),about 1" deep and lay your new sod. Keep it moist and it should take off real good.
You could skip the tilling, but that way the new roots have a little loose soil to start in, and you can lightly rake out uneven spots before laying the sod.:)

[Turf Technologies]

I know here in Florida the Bremuda does take over to St. Augustine.