Use PoolTak spray adhesive to hold wall foam in place when replacing above ground and in ground pool liners. Wall foam protects your new liner, hides seams, and cushions the walls. Pool Tak makes it easy! Just spray the wall and allow it to dry to a tack, then roll the wall foam out and press it to the wall as you go. PoolTak is also recommended for skimmer, inlet, and main drain gaskets that go behind the liner. Gluing them down keeps them in place while you position the liner and makes the job easier.