3 8 is the maximum needed.
Installing floor trim before carpet.
You can also put a strip of 2 inch delicate work painter s tape on your trim before the carpet goes down.
If you do you ll likely end up with wavy uneven molding.
Pushing your trim back into the corner place a nail about 2 to 3 inches out and nail it off.
The carpet installer can run the tack strip up to the trim then roll excess carpet under the trim.
You don t need to leave any gaps.
When installing the molding don t simply follow the flooring.
Remove your pencils and continue all the way down your wall.
The molding should be installed after the floor covering and should be adjusted any time the flooring is changed.
Cut the baseboard get your baseboard cut to the exact length of the space you ll be putting it.
This way you can make sure you have the.
Keeping the base off the floor helps the carpet installers to tuck the perimeter.
However consult with your installer to be sure they have no concerns.
Install the carpet install the carpet all the way against the wall.
The trim will be installed on top.
Then touch up base if need be.
In some cases this will not be possible since.
Baseboard trim before or after carpet 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.
The pad is great to kneel on but the tack strips aren t.
They will need to be careful not to damage the baseboard when installing the tack strips.
This will help prevent some of the minor scratches the edge of the carpet can cause before it is chiseled behind the tack strip.
Installing base molding before carpet is like installing window door casing before the window door.
For most installers this is not a problem and can be done easily.
My advise install the trim and doors first and stress to the carpet installers to be as careful as possible.
When installing baseboards before carpet ask the installer how large of a gap to leave between the floor and the trim e g.
Leave about a half inch at the bottom of the trim uncovered then remove it after the carpet is installed.