Solid Hardwood, Engineered and Laminate Flooring - Carpet/Hardwood border

How is the carpet handled at a hardwood floor reducer?

I have seen only the following technique -

1. Cut carpet so about 6 inches overlaps hardwood floor from point of reducer (reducer is nailed/glued directly to subfloor.

2. Undercut about 6 inches of carpet pad away from reducer (under carpet).

3. Fold excess carpet under where pad is removed and staple fold where it meets the reducer.

This a good technique?

It depends what kind of transition molding they used.

An endcap: I would tackstrip and run a bead in the gully with carpet seam sealer latex, before I tucked the carpet to the endcap, or I would use Z-bar and tackstrip with the appropriate height pins.

Same with a reducer or baby threshold. Z-bar is almost the same as turning and tacking, but looks much better and is a more professional installation.

With a "T" molding the carpet tackstrip is nailed next to the molding with enough space to tuck a reasonable amout of carpet under it.

are you using 3/4" t&g

Yes,

But having the carpet cleaners do the job sounds like a no brainer.

Carpet cleaners are not carpet installers!!!!!

Beware!