A puddle means the foam core is damaged or broken. This is important to know because it could mean your cover is taking on moisture. If you get a puddle on your spa cover, unzip the vinyl covering and turn over the foam core. That will probably take care of it. If not, check to see if your spa is level.
If there is a puddle on top of your cover, unzip the vinyl cover and remove the inner foam core. Simply turn it over and re-insert the foam core. If the core is actually broken, it may be time for a new foam core or a complete new cover.
