I'm installing a new entry door in the kitchen and plan to do a laminate over the existing floor. Should I enlarge the RO and shim the new door up now to accommodate for the future laminate, then run the flooring under the sill? Or is there a trim piece that's usually used where the floor meets the sill?
The laminate is 8mm thick and the backer is about an 1/8", right?
You do not run floating floors under weight bearing items. They need to expand and contract. If you look at the instruction, you will see the flooring needs to be a certain distance away from walls, door frames, kitchen cabinets and the like.
How you set up the new exterior door on the floor depends on the height of the doors sill. You want it low enough so it isn't a tripping hazard, but high enough so the door can open and clear and mat or rug you put by the door so you can wipe your feet.
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B. Franklin 1759