Hello, we have concluded that Envee tacky back is our best choice. We have a cabin that will occasionally see temperatures of 50degrees during times we are gone but I see that 55 degrees is recommended. Could someone tell me what happens when temps are slightly below 55 degrees? Does the tacky back become less sticky - but then perhaps recovers when we raise the house temp? We may well consider this an accepted risk and replace some planks if needed because these are so right for our needs. Thanks.