[Why should we use vinyl-liner in-ground pool?]

I always used Pondpro2000 for sealing inground pools, here are some advantages of using pondpro2000;

Water resistance: PondPro2000 is superior to epoxies, urethanes, acrylics, polyesters and alkyds at equal film thicknesses and is not affected by continuous immersion.

UV resistance: PondPro2000 is equal or better than acrylics, polyesters or urethanes and much better than alkyds and epoxies.

Temperature tolerance: PondPro2000 is better than all other coating polymers except silicones. EPDM can withstand live steam as well as cryogenic temperatures.

Flexibility: PondPro2000 is better than all other coating polymers except silicones. EPDM can withstand live steam as well as cryogenic temperatures.

Chemical Resistance: PondPro2000 has very good resistance to strong alkali's, concentrated salt solutions, many acids, and alcohols.

Surface tolerance: PondPro2000 will not bond to a surface that is damp with moisture. PondPro2000 also can be applied directly to metal surfaces that have tightly adhering corrosion without a primer.

[Pool Liner Help!]

My suggestion is "Pondpro2000" liquid flexible pond liner, an easy and flawless way to patch your liner, DIY version of fixing leak of pond liner, easy to use and perfect for joining without trouble.