Thank you for the offer, we are not DIY but any tips would be highly appreciated. An educated consumer is always better. My PB was reluctant to use travertine cuz he said he’s only done laying travertine on concrete before. In our situation he would be backfilling w crushed stone. It would cost too much to fill w concrete base then lay the travertine on top of that. Idk how thick a concrete base is really needed. Travertine Matt is recommending dry set for cold climate ( I am in zone 6a)to prevent freeze and thaw cracking. From reading it w my limited knowledge, it seems like a typical install w item 4 the sand dust then travertine tiles. I told my PB to order from travertine mart and read their recommendations. My previous patio used unilock pavers, after 2nd winter a few cracked. My front walkway is concrete, we replaced cracked concrete piece but it’s cracked again at the same area after 2 winters. I wonder maybe the base was not smooth or graded correctly, that water was puddling under the pavers cuz it to crack?
Any input/ suggestions reg installation is highly appreciated.
BTW, my husband likes the color of the inside of your pool too

do you or anyone by any chance can recommend the equivalent color in Latham liner. To be honest, I spent more time on figuring out which liner looks like what in water then any other part of pool, lol you think the liner company could use more real pictures of each liner in water to take out the guessing.