I agree with the previous comment. No waterfall island. There must be hundreds of posts on this forum about the problems with installations of waterfall islands. If the fabricator does not have the upmost expertise - which means you pay the highest price - don't do it. You've been warned.

A waterfall island looks appropriate in a contemporary space with modern-style cabinets, with a spacious island that supports the appearance of waterfall counters. From your other post, that is not what your island or your kitchen looks like.

"I found a slab I like by Calacatta."

Calacatta is a pattern used by many Quartz manufacturers. "Calacatta" is not a Quartz manufacturer. The well-known brands like Cambria, Caesarstone, LG Viatera, and Silestone all manufacture the Quartz about the same. We see a lot of complaints here about MSI customer service, more than the other Quartz brand names.

Your fabricator is the most important part of the counter installation - more than the brand itself. Most of the Quartz woes we see on this forum have to to with fabrication and installation. Make sure you are OK with the seam placement ahead of time. So many issues with people being surprised by where the counter seams are. Also make sure to inspect the counter as it comes in the door before it is installed. That is because a big source of complaints is stains, scratches, marks on the Quartz from poor handling that the homeowner did not look for before the counter was installed.

Your island from your other post - not really a size for a waterfall counter:

Can you guys share some ideas for alternatives to waterfall based on what we have?

Waterfall doesn't match your cabinet style and will be overwhelming in your size kitchen. Just get a countertop for the top space that does not go down on the sides.

1. Spend a good hour reading posts on Houzz discussions about pitfalls others have experienced with quartz counter fabrication so you are educated and know what to look out for.

2. Have you looked at large samples in your kitchen against your white cabinets and considered how the calcutta colors do or do not match the white of your cabinets? What do you intend to use for flooring and backsplash? Do you want to just use a 4" - 5" high piece of the counter material as your backsplash instead of trying to find something that will match your cabinets and Calcutta?

3. Go to the fabricators' workshop when they have your material and measurements on site and see exactly where the "veins" and seams will hit. Consider how subtle or busy your island and counters will look together.

Very pretty grey on your island by the way.

This is all helpful and if we don’t go the waterfall route it’ll be a savings for sure

What is the purpose of the plywood? Where is the steel for that overhang? You definitely need steel, basically a table support and legs, that plywood as support is useless.

yeah - don't do the waterfall. Mitering stone is super tricky to get right and you are going to see the binding material.

Get cabinet end panels in the door style, for the island sides, and all ends of cabinet runs. They will match the cabinet doors, and give a polished look to the kitchen.

Best picture I have from my kitchen, is the reach-in pantry. Look at the right side of the pantry. You’ll see it matches the Shaker design of the doors. It’s not just a flat panel.

Get these for your island, for a finished look. More in keeping with the style of your kitchen. A waterfall would be a mismatch.

@millworkman, we asked the installers to place the island but not secure the cabinets as we have yet to finalize the exact location and we came home to that! It’s frustrating to say the least. They said we choose the overhang length and they’ll cut it.

This also concerns me and it’s too late now. If you zoom in they screwed the nails too close to the edge and it’s causing the sides to protrude where the 2 nails are. A waterfall island would cover it, but trim pieces can too I’m guessing. This is all a nightmare and time is running out.

If you don’t do the waterfall, counter overhangs are typically 1-1/4”-1-1/2”.

Your aisles are way too small, and that island is way too big. Without the correct support. And lacking electrical outlets.

The plywood will be cut and the cabinets haven’t been placed in their final location.

Here’s ours, steel supports under counter overhang and kept it open on sides which is nice for extra room while seated or if you want to use one of stools along side. Did the sides of island trimmed out to match the shaker cabinets

I love that look. Does anyone know of the steel overhangs go on top of the plywood?

they notched out cabinets and supports sit down inside the notches

Ahh I see. Thank you