If you are thinking one of the thinner more commercial like products without any padding i would lessen the spacer to 1 4 to 3 8 to prevent any unsightly gaps.
Carpet or moulding first.
With thicker carpet and pads usually 1 2 works perfectly.
After trim paint tile other types of flooring etc.
Carpet installers have to bring large rolls of carpet into your home 12 foot rolls minimize seams in your room not small paint cans or brushes.
If you are using a berber type carpet i would set the base about 3 8 off the sub floor.
The least amount of construction traffic on the carpet the better.
If you are carpeting with any type of plush rug with padding just use the thickness of the base moulding 1 2 to 9 16 to space the trim off the floor.
Retrofit is a different matter.
Should you install carpet or trim first.
Paddedhat is the expert because he builds houses for a living.
This will make it much easier to paint or stain the baseboards without worrying about dripping on or ruining the carpet.
If you re replacing carpet first before painting it will be easier for the flooring company.
You want to install your trim before the carpet.
Deciding whether you should paint before installing carpet or not has benefits and drawbacks on both sides.
Something will get spilled or dropped muddy boots will walk across it or it will have to be pulled up to fix something else.
The carpet guys believe installing flooring first would be the most cost effective and stress free solution and here is why.
If you are carpeting with any type of plush rug with padding just use the thickness of the base moulding 1 2 to 9 16 to space the trim off the floor.
The good news is that people actually install carpeting and trim in either order so there isn t any big reason to worry about it.
On the other hand if you paint the wall first then the trim paint could bleed over and.
I think the carpet should be one of the last things you do on the project period.