If you are not intending to install quarter round or base shoe the baseboard should be installed snugly on top of the carpet.
Installing baseboard for carpet.
The idea is that you should.
The carpet installer can run the tack strip up to the trim then roll excess carpet under the trim.
All you need to so now is go along that wall and fasten the remainder of the trim as you normally would.
These can be reused over and over again so hold onto them.
Be aware this height depends on the thickness of your carpet and padding.
The trimmer is not going to make a special trip back to install the base after carpet is installed.
You may need to install the baseboard an inch or more off the ground.
Once the trim is fastened remove the short baseboard pieces and move these along as you install the baseboard.
Install subsequent baseboards using this procedure.
If you plan to install baseboard moulding before adding carpet it needs to be installed 1 inch above floor level to allow room for both pad and carpet.
Determine the type of corner at the opposite end of the wall then cut the necessary inside or outside angle.
Baseboard first set on 3 8 wood lath strips tack less set between 3 8 1 2 inch away padding brought up to tack less and carpet installed and stretched over tack less and tucked under base.
Elevate the baseboard for most carpeting you want the baseboard nailed in about a quarter of an inch off the ground.
Diy basement finishing course.
Then touch up base if need be.
Do not push down on the baseboard so that it presses into the carpeting.
This is the basic method for baseboard installation for carpet applications.
The first cut will mirror the corner cut of the molding already installed.
Nail the baseboard in place with the sticks resting only lightly on the surface of the carpet.
If adding baseboards after carpet is laid it should be installed at the same height as without carpet.
Fasten the molding with nails.
When installing baseboards before carpet ask the installer how large of a gap to leave between the floor and the trim e g.