Your pictures of the two showers are two DIFFERENT Schluter profiles.

This is Rondec......a bullnose

Each of these pics are from the Schluter site,Quadec profile

I'd leave well enough alone, and not risk integrity of the niche.

Your other option was a pencil edge tile in marble for the entire shower.

These are details you work out at the start of the project.

The niche will hold shampoo and body wash bottles ,yes? Is that any more offensive than the white edge? Probably not : )

I would never have done the schluter with the marble- one of the fire advantages of real marble is that it is the same all the way through and easy to shape. The ship has sailed, what he did looks well done so I would move on. Removing it will open a whole host of problems.

To me “ it does NOT look well done “, but besides painting it , I would leave it alone , put pretty shampoo accessories inside and enjoy

Note:

@ Hallett is referring to this.: MITRED.

A very good look, more tile skill, more labor, and.......it can be prone to chips or dings, and even leaks.

My tile guy would have just bullnosed the edge of the tiles forming the walls of the niche, less risky than miter but possibly not as elegant…

I agree w Jan - yes it could have been thought out better beforehand but once all your fixtures, shower glass, products are in your eye will not fall on this. Your eye is picking it apart because the project isn’t finished and this is the only thing to look at.

And the Schluter profile is specified based on the tile thickness. Your subway is much thinner than the marble. You could have used the same material on all 4 sides to make it look more cohesive - this applies to the Schluter or the solid ledge material that was used. Saying this for others who haven’t tiled yet to think this through before tiling starts. Again, don’t sweat it.

I use schluter edging often but I do not like niches and I agree that is a mess but the solution will be worse once all the shampoo bottles get in there you will hardly notice the framing. The schluter I use is the one that barely shows and is in stainless . Lesson learned always see what is planned both the material and a drawing.

Quadec is only useful as an accent strip. Not an edge. Jolly is the better edge choice all the way around. Polishing the stone edge would have been the far better choice here. That assumes that a certain level of competency was pre screened for, in order to do a high end marble bathroom.

If this was not a tile contractor used to doing high end projects, and from the Quadrc use, and failing to miter it, it serms to not be, then the basic issues of waterproofing have to be asked about. What waterproofing system was used for this shower?

Thank you for all the helpful feedback. Durock with Edgeguard was used as the waterproofing system.
What is the difference between Quadrc and Jolly?
I had never heard of Schluter prior to this tile installation and was assured by the contractor and tiler that it would be barely visible. I now know that I should have insisted on drawings.

PLEASE DO NOT paint the schluter.  You have invested quite a bit of money already for this project and painting the schluter will on make this worse.

This can easily be resolved without having to completely remove all the tiles.  You can have the schluter dug out, if your contractor says that isn't possible, please find another contractor.  I have had my guys do it after tile has been set. This is going to require someone to take the time, but it is possible.

Next, once the  schluter is out all the tiles around the perimeter will have to be replaced.  Then I would recommend the Jolly Schluter, it comes in various finishes.  You could do the Jolly to match your fixtures, so if brushed nickel go with that, then install the tile correctly.

I'm sorry you have had to go through this, but it is your contractors responsibility to make this right.  Also, make certain they cut the Schluter at a 45degree angle when doing the corners, it will be better craftsmanship.

Lastly, if possible, instead of the ledge, I'd just have them tile the entire niche.  It will be a much cleaner finish if they do that.

I've attached an example one of my projects so you can see what I am referring to.  I used Jolly Schluter and had the guys do a 45 degree cut.

I'm sorry someone came in your home and thought that was acceptable to not only do, but then leave like that.  Hope you get this resolved soon.

Also, here is what Jolly Schluter is:

If the white Schluter is aluminum, which it probably is, I would remove the white coating. Scrape, sand it away. Aluminum will look better with the marble than the white does.

I wouldn't go through the effort and potential risk of trying to replace this. As someone else suggested, if it's white paint and there is aluminum under, I would just carefully sand off the paint. I think it would look fine if it was a silver color.

"Cement board IS NOT WATERPROOF."

False.

"Waterproof composition throughout entire board saves cost by eliminating the need to apply a separate waterproof coating across the surface of the board."

I honestly would have them redo.  The grout line in the top niche is really thick and caked up, the current schluter isn't even, and the tile needs to be redone inside.  It was an attempt, but given the cost, you should not be expected to live with this.  

Sanding down, to possibly reveal aluminum finish below is not the method to take.  It is a bandaid solution. 

Everyday you use that niche you are going to be frustrated and upset.  It is an easy fix that will take no time at all to finish.  

You should have it corrected.  I would not think that was acceptable for any client.  Your contractor shouldn't either.

There are also other Schluter colors that would have blended better with the marble. I agree that rounding off the marble edges would have been the "simplest" solution.

It is sloppy, I agree, and the wrong thing to use. But the rest looks pretty good so is it worth a rip-out? Hard to say.

If it can be sanded to bare metal, at least do that. (Get a piece of scrap to test with.)

You agreed to the Schluter strip and you did not specify a marble pencil trim tile for the niche outline so I believe the contractor is justified to require a Change Order at your personal expense for any changes you want now - including materials and labor to replace any niche tiles damaged in the process. But maybe you can negotiate a deal with your contractor! The lippage on the Schluter butt joint may be caused because the wall isn’t perfectly flat. Ask the manufacturer about painting the Schluter strip if you want to research that option. My guest bathroom shower niche has mitred pencil tile trim and my primary bathroom shower niche has Schluter flat trim with butt joints like yours. BTW, I love the windowsill style bottom ledge on your niche.

Please don't pay attention to the misinformation being put forth once again by Joseph Corlett.

Per the installation manual of Durock with Edgeguard: " Waterproofing If waterproofing is desired, use USG Durock™ Brand Waterproofing Membrane or USG Durock™ Brand Liquid Waterproofing Membrane. See USG Durock™ Brand Waterproofing Membrane submittal sheet (CB595) or USG Durock™ Brand Liquid Waterproofing Membrane submittal sheet (CB817) for product information. "

USG states one of the benefits of Durock with Edgeguard is: " Water durable and mold resistant". That is certainly true, it is quite durable when in contact with water, just like a sponge is. And just like a sponge, it will let water pass through it. It is not waterproof.

Use schluter finec it gives a miter look but reinforces edge

"Please don't pay attention to the misinformation being put forth once again by Joseph Corlett.

Per the installation manual of Durock with Edgeguard: " Waterproofing If waterproofing is desired, use USG Durock™ Brand Waterproofing Membrane or USG Durock™ Brand Liquid Waterproofing Membrane. See USG Durock™ Brand Waterproofing Membrane submittal sheet (CB595) or USG Durock™ Brand Liquid Waterproofing Membrane submittal sheet (CB817) for product information. "

USG states one of the benefits of Durock with Edgeguard is: " Water durable and mold resistant". That is certainly true, it is quite durable when in contact with water, just like a sponge is. And just like a sponge, it will let water pass through it. It is not waterproof."

Catbuilder:

Please read and comprehend the manufacturer's installation specifications before making false allegations of repeated misinformation.

Your post makes my point. There's a giant "If" qualifier in front of "waterproofing desired". "If" is not a requirement. The people who write specifications are quite specific. If they insisted upon waterproofing for proper performance, they would have said so. Their waterproofing membrane would be required; it is not.

In fairness, I should have stated that there are waterproof cement boards available. Allow me to make that clarification please: https://www.permabase.com/products/waterproof/permabase-wp-waterproof-cement-board