Hello. I am doing a 2nd floor master bath remodel. I am handy, but not a plumber by trade. Wife wants an external tub filler for the forthcoming freestanding tub. The floor is currently open where the tub and filler will go, so access to supply is easy. Once I attach the supply lines to the rough in tub filler base, I will then install a new floor. I will shut the house water off to attach the supply lines to the base, but can't keep the water off for a week or so while I do the new floor. Is there something very obvious I am missing as to how I can keep the water off to the filler after rough in base installation until I am ready to install the part of the filler that is visible above the floor? Thanks.