i won't know on the warranty, P, until i decide i need to use it nevertheless, if for 100 bucks it lasts 3 years, i'll be thrilled

texas, i've seen other people talking about using multiple pieces and they don't seem to have an issue with it..i haven't myself, but i can say my cover has been through 70KM per hour winds during 2 rainstorms this year. there is a 2 inch gap around the entire edge of the cover and it sits about 2 inches below the edge of the pool at the waterline..so, i watched with great curiosity to see if it would be picked up..not a budge..the water "adhesion" seems quite able to overcome, even though the cover doesn't rest completely flat against the water at all points, all the time (it will have small ridges here and there when i put it back on everytime)