I like the flooring from the inside taken at least in color to the outside deck or patio so I would do the same stacked look with at least a similar color to the inside tile and also the same size .

I would agree with straight set 24x48. Clean and simple.

Perhaps I should have included this photo with my question. This is basically the way it is going to look, gray "tiles" with fairly thick white "grout" lines but these are 12x24 and mine will be bigger. I'm afraid a straight grid is going to look like a giant Excel spreadsheet.

In my house I have 1/16" grout lines and the grout matches the color of the tile so it looks more like a slab than a grid.

Does this change anyone's mind?

What do you see from inside? Is this off of your main living areas?

This is off the master bedroom which has wood floors.

you could try and match your wood floor if you want to carry it out.

They do a stamped concrete that looks pretty good

Or, you could try this type of look

or the others

Thanks but the install has already begun. My only decision is the pattern.

Out of curiosity, could you post the product and an example or link of how they pattern stamp a liquid-applied waterproofing product?

and I posted at least 8 diff patterns

I don't think a pattern with anything white is appropriate here. It is too contrasting and jarring. No pattern at all. Or something less contrasting than white.

@3onthetree I posted a photo of the actual finished product above. The design isn't stamped, they do it by masking the grout lines. And the grout lines are a bit recessed when the process is done so it's not completely smooth.

@Beth H. : I appreciate all the patterns you posted and there are a few that I like but those examples are of a totally different product than what I'm using.

I've narrowed my decision down to 24x48 in either a straight grid or staggered 50%. Also open to 24x24 format if anyone has good arguments for that. Beth, what would you choose between those options?

@User Looking too busy is a bit of a concern for me as well because my space is much bigger but I really like the way the colors look on the balcony I posted above looks. You don't like that?

I could have darker grout lines like this example, but with the larger tile pattern and the primary color would still be the same darker gray as on the balcony above. What pattern would you use?

@3onthetree This is another example of the same thing.

I think if you like more of a modern type of look, the stacked is fine. ( i prefer that one)

I also like the 24x24.

50/50 can get a little busy looking, especially if you go w/a contrasting grout.

It all depends on the look you're after.

It would help if you could show an example in the color and sizes you're looking at.

is this it? I don't care for the white lines. on a roof outside they will get filthy. do a light or medium gray

I looked up some waterproofing 'patterns'.

is this what you're getting?

Or this one? this is Calif Decking out of LA

I'd prob go for the larger size. this looks like a 12x24

Or here's Tufflex: (and the squares you mentioned)

this look is really cool

I'd prob want to do something like this after the waterproofing

Not so much a pattern, I'm asking for the product because I have never heard of an applied waterproofing that you can "stamp," let alone have variations in height, and yet act as a finish traffic surface.

@Beth H. : I am definitely going for a modern look. I'm not sure what all those products are that you posted, but my photo of the balcony that you reposted above is the exact product I'm getting and the colors I plan to get. I think it's the same technique as the photo you posted from California Decking. The tile color can be whatever I want but at this point of the process it would be hard to change the grout color to something other than white, but it can be done (extra time and expense).

I had some renderings made to help me visualize the patterns. The white here is way brighter than the actual white. The actual grout lines are basically the color of light cement, not like bright white paint. And the lines won't be nearly as thick as they appear in these renderings. The grout lines will be more like my photo of the balcony or your California Decking photo.

Which option do you guys like best?

I could also go with a uniform color throughout with no grout lines. Anyone think this is a far superior choice?

Straight 24x48

Staggered 24x48

24x48 diagonal

24x24

24x24 diagonal

@3onthetree The way they create the recessed grout lines is by masking the grout lines and then applying another skim coat of cement. Then they apply the color waterproofing layers. Then when they lift the mask the lines are recessed mostly due to the extra skim coat layer.

Ok then, when I hear "waterproofing" that is 1 layer in a multi-part layered system, which is what you are getting with a wear layer. And I couldn't tell from your pic if you have an EPDM membrane or exposed concrete so wasn't sure.

For the pattern, I do realize the white in the rendering is very unnaturally consolidated, and there would be a couple more tiles lines in the 19' direction. But I'd probably stay away from diagonal - there would probably be too many odd triangular pieces, and it seems your eye follows the "grout lines" towards the wall when you turn your head that way.

The 50/50 offset says tile, IMO it looks good on smaller spaces and smaller "tile" sizes, but not as successful here with the large space and large tiles (in large spaces your eye picks design lines near you and you follow them beyond the area around you - with 50/50 it's too messy with the white on dark). Both the 24x48 and 24x24 look good, I would look for design lines with the rest of your unit or the building for tilting the scale. And also, consider the glass guardrail will mirror some of the lines, so you may see a lot more white "grout" lines with some schemes.

Thank you guys for your feedback! I also lean towards the 24x48 straight grid. And good point about the lines also being reflected off the glass rail.

Since it has come up a couple of times, parts of the house are gray and parts are white. So the gray and white floor would compliment that. I honestly have no idea why I am going with these white grout lines because ordinarily I want my grout lines to disappear, which is how it is in all but one room of my house (where I have bright white contrasting grout). But something about that balcony photo (a previous job by my waterproofing contractor) really struck me.

However, I just found out as I was typing this that the minimum width of the grout lines is 1/2" and that seems like a lot, especially with this much contrast. So I might just go with solid gray but I think that could look cheap/unfinished :-(

Here's some other examples with 1/2" lines.

@3onthetree You seem knowledgeable about this stuff. Do you know how UV fade resistant this stuff is? If I have a patio umbrella or patio heater in one spot for a long time, will I see ghosting when I move it due to uneven UV exposure? The contractor says this could take years but I'm worried it can happen faster. There will be a clear cost over the color coat which should help UV resistance.

One more tile pattern question. My deck is 226" wide. Rather than using a standard tile size of 24x48 I can make the tiles 56.5" wide so I get four full columns instead of having partial columns. That's actually how the rendering turned out with four columns. Any good reason not to do that?

And this might be a super obsessive question but would I want to make the tiles 28x56 to keep a 2:1 ratio?

i'd like full columns instead of partial slivers. ask the deck guy if he can do it.

don't over think it usc, i'm sure either one will be just fine.

I would agree that if you can design any pattern and size, go for less "grout lines" and no slivers. Nothing is holding you to a 24x48 tile size unless they are using prefab stamps. If it is a UV topcoat product then you shouldn't have issue with fade for just a planter or two and an umbrella/furniture. In my experience, by the time the concrete topping colors are changing, the system is in disrepair anyway.