Use the powerful spray adhesive to permanently affix this wall foam to the wall of your pool underneath its liner. The 1/8-inch foam padding is closed-celled, providing a smooth padding for the liner that prevents rust, corrosion, puncturing and wear. The foam padding is 42 inches wide and comes in a roll of 125 feet; four cans of adhesive are required to affix each 125-foot roll. This long-lasting foam padding extends the life of your in-ground pool’s liner and only needs to be applied once.