Yesterday I wrote note describing two "theoretical" Ultra installation schemes that may seem crazy. It is here:
Allure Vinyl Plank "Click together"
I think that Ultra could drive people insane because this nearly 4 feet plank is flexible and bends. I mean, installing 12 mm thick floating flooring laminate planks is piece of cake comparing to this one because it is rigid. Even the glue-together Allure tile was challenge at first because the piece bends and one of the ends may contact the other glue strip EXACTLY where you do not want it!
So yesterday, after writing my note about Ultra I started having second thoughts about it for the following reasons:
1) I can install the Allure tile (no experience with Allure plank) no problem - next room is simple rectangle and compared to the kitchen I'd done already it will be breeze
2) our kitchen flooring is in place for two weeks now and there are no problems at all
3) the next room will be for our puppies to frolic around and pee everywhere (yes it will be cleaned within 1/2 hour or so....) and the seams between Allure Ultra planks do not give me 100% confidence that the urine would not seep to the wood flooring under it, regardless my small experiment before.
4) I can use the same pattern of the Allure tile we used in the kitchen which is going to make my wife happy.
5) IT IS a' 30% CHEAPER THAN THE ULTRA!
6) And - the locking feature in the Ultra is done using secondary, machining (millings) operation. It is impossible to guarantee perfect quality doing it; there need to be pretty tight tolerances to be used. This machining operation generates a lot of shavings which may cause problems - dimensional due to accumulation and higher cutting temperature. These shawings are probably blown away from the material, but if there is low humidity in the manuf. room, they will stick to wrong places due to electrostatic/triboelectric charges. (As anybody who machines/cuts plastics knows pretty well).
So last evening I took two pieces of the Allure tile I have left from the kitchen job, connected the glued lips together, compressed them just using my hands and then walked on the seam. Then I took it outside and left it there overnight. We had there something like 20 degrees F and this morning the sample was just fine, it was not brittle and the seam held even when I bent it some. Now it is in the living room; while it was still cold, I put it down on a carpet that lays on top of our laminate floor and step on it some. It did not separated. After 2 hours in the living room I bent it pretty severely, and the seam held.
I will repeat this "cooling/reheating procedure few more times just to make sure, but am pretty sure I will use the Allure tile.
What I learned to date:
1) Allure tile is better for us that the Ultra
2) Allure glue-together does not hold if it is installed over basement concrete floor - people do not realize that the ground temperature is in the 40s Deg. F and it takes some serious effort to bring the temp of the concrete surface to the 60s Deg. F to make sure the glue works well. This is because the glue does not work well at lower temperatures.
3) people do not use the recommended 100# roller
Based on this, because our large sun room is over unheated crawl space, we will wait until warm weather. This is because the temperature of our floor
in this room was yesterday only 54 Deg. F while the room is heated by our central heating system to the came temperature as the rest of the house. This waiting for warm weather will assure we will not have any problems in the future.