What does my in-ground vinyl liner pool warranty cover?
Almost every pool liner warranty in the industry covers the welded seams only and nothing else. The seams, of course, are very important but if they hold for a week, they will most likely hold for seven years. If there is going to be a problem that is covered by your warranty, it will be evident soon after the liner is installed. It is very rare for a seam to fail after the first six months.
What is not covered are all the other things that may happen to your liner such as material defects, print fading, irregularities in printing, damage from pool chemicals, wind and ice damage, rips, tears or holes that can be snagged or punched in the liner.
Even if you do have a legitimate split seam warranty issue, your warranty does not cover installation, freight or the cost of water and chemicals.
Like Dad always said, warranties are designed to limit the manufacturer’s liability, not to benefit the consumer. Pool liner warranties are not any different.