Diy Under Pool Mat. Works great so far and gives a thicker padding than a bathsink mat. Use it like sand or clay -- in thick layers -- to build a shaped layer beneath your pool liner.
I went to Home Depot and a got a piece of 40mil gray vinyl made for plumbers to put under shower stalls. Among other products that bio-degrade sawdust is a standout. Outraveler Swimming Pool Ground Cloths Outdoor Garden Pool Dust-Proof Above Ground Cover Floor Mat 125x125.
An underwater pool mat is a specially designed and printed vinyl mat that allows you to change the look of your pool floor.
It sports a bright blue finish and a strong construction to last for years. 29 out of 5 stars. I put it under my drop-in steps to protect the liner. Protect your liner for scratches made by your ladder with this hydro tool Swimline 36 x 36-inch floor protective mat.