I'm curious how they can determine a wet COF, considering that there are alot of variables that come into play, even given that it's water that's wetting the tile! What's in the water? Minerals? Soap? Is it just a film of water? Submerged? What temp? WAY too many variables.

Although I dont the scientific reason for it but I am sure bare feet are less slippery than footwear.

We have polished marble floor in a bathroom and I feel a lot less slippery when I am bare footed. Must have to do with how we grip...

LOL, Bill. But there must be some formula or set test they use to determine these numbers, no? Do you think I should shun a floor tile that lists the wet COF as .55?

Pharoah, I agree. Our whole downstairs is tiled and I always kick my shoes off as soon as I'm through the door. (Of course, that's partly because in steamy FL those cool tiles feel so nice.)

Do you think I should shun a floor tile that lists the wet COF as .55?

Actually, wet, that's not bad at all.

Thanks!

By measuring the coefficient of friction, a quantitative number can be determined. To determine this, a 50 pound weight is placed on a neolite heel and is pulled across the surface both wet and dry. The maximum amount of force (pounds) needed to initiate the weight is then recorded. This measurement is divided by the amount of weight (50lbs.) and referred to as the static coefficient of friction value.

Thanks, stellawinslet. Nice to know how they arrive at the numbers.