Successfully installed carpet to vinyl transitions should blend–in or accent both types of flooring. In residential and commercial applications, it is common to use rubber or vinyl "insert" (also called "cap and track") as an alternative to traditional clampdown metal or flat bar. One of the most common complaints I hear from new customers is that their old insert has shrunk over time, leaving unsightly gaps at seams and walls. This makes the transition an unwanted focal point and the original installer look like a hack. There is a fast and easy solution for this problem, though it seems not many installers are practicing it. Simply squeeze a small bead of D–815 or similar adhesive into the track about 3 inches to each side of the seam in the transition and a similar bead next to any walls or other obstructions you're concerned might show shrinkage. Be careful not to use too much glue so that it oozes out onto the carpet.

No matter how good the rest of the job looks, small problems like this cause annoying call–backs and can ultimately ruin your reputation as a qualified installer. Take the extra minute to give this a try.