This is 4x4 tumbled limestone and laminate heart pine flooring. The limestone is at the entry and in the center bath, it is set with epoxy thinset on top of hardi backer that was also set with epoxy and grout was epoxy as well.
The flooring is a laminate t&g floor that needs to be stapled and or glued down, this is real heart pine laminated to a plywood backer and prefinished, very light and fairly durable. I layed the floor sideways verses longways since I was worried about buckeling do to movement during travel. I used construction adhesive and stables for the installation.
This work was done 2 years and 3000 miles ago and has held up well considering 2 kids and 2 dogs, there are some light scratches and a few minor dings in the heart pine but I can always lightly sand and recoat the floor.
The reason and best part that I used this type of flooring is that I love the warmth of the materials and that they where free
. If you are flexible and don't mind hunting for a bargain take a look at salvage and discount lumber yards as well as habitat for humanity home stores, you will be amased at what you can find.