I wouldnt want it like that. Its a tripping hazard to me too.

Thanks KR and cat_ky. I don't suppose you have any ideas for resolution, or if anyone has buzz words I can use? Like, 'lower profile"? I'm wondering if I should be trying to find a trim carpenter rather than my contractor, but I doubt someone would be interested in such a tiny job.

Looks like you have different floor heights?? Maybe look at the plastic type that is used with laminate flooring that goes from one height to another. It is a lot thinner and doesnt stick up like that. If your floor is the same height, look for something thin and low. A metal one would be better than that, and you can get metal ones that are wood grained so they look nicer than the old silver or metal ones. You will still see the screws, but, if screws are close to the color of the metal piece, they wont be all that noticable.

Thanks cat_ky. Yes, I'm dealing with different floor heights. From some googling, it looks like maybe my contractor used an 'end molding' when instead a 'reducer' should have been used. (?) I've got some learning to do! :)

An uneven T-moulding can handle 3mm of variation between two floors. But 3/8" is too much for an uneven T-moulding. That means a reducer would have been the better option.

Is your GC a flooring expert? Does s/he KNOW a flooring installer? A handy(wo)man will have many resources but not all of them will be professional grade. A floating floor that is sitting 3/8" (9mm or so) higher than an existing hardwood/permanent floor is a big ask for anyone other than a flooring professional.

One thing you can do is reach out to door and moulding company to see if they have any reducers, L-stops, etc that will work with your existing height variation.

You will probably have to have them mill something for you. Which they can do...for a price. While they are at it, go ahead and get them to stain it on site as well. Send in an off-cut of your marmoleum and get a slightly darker stain match. As in clothing seams, a transition piece looks better if it is darker rather than lighter (if they cannot get a perfect match...which they can't).

As a heads up, it could cost $70 - $100 for a 6ft piece.

Question: did your installer seal the seams of the click together laminate for use in a kitchen?

In my current kitchen I have same type of threshold between dining room and kitchen...it drives me nutz

Thanks @SJ McCarthy, I appreciate your insights! My GC is definitely not a flooring expert, and I'm unsure of whether the seams of the Marmoleum were sealed. I would guess no, unless it was specified in the installation instructions. Is this something that can be done after the fact?

Thank you for the idea of contacting a moulding company - that would have never occurred to me! I would be happy to pay $100 for a nice-looking transition - right now it's just not quite right. I will definitely explore this option.

The click together marmoleum is a great product but it has the same issues as a cork floating floor in a kitchen. The marmoleum is sitting on top of fibre board (paper pulp squished int a dense material). Like all fibre board it doesn't like exposure to water.

Linoleum and cork are impervious to water...they don't care. The FIBRE BOARD hates water and can have issues when exposed to water. Hence the seam sealer suggestion.

It used to be on the marmoleum click together installation page. I've just looked and the installation page is very limited. They no longer have the seam sealer as a suggestion in kitchens. In fact they have no suggestions for kitchens...they don't even mention kitchens.

The visible screws are your surest objection, AMS. There's no good reason for installing a threshold that way.

The raised profile, on the other hand, is ugly but logical. Lapping it over the edge of the Marmoleum was a prudent detail. They couldn't install the threshold flush with the wood floor because your Marmoleum is higher.

Staining the threshold to match the wood floor will go a long way toward making it less conspicuous. And have them pull out those screws.