First of all, do not attempt this yourself. Please save yourself time and money.
Also, Pool liner Replacements are a trade & art form that should be left to a professional pool liner technician. There is a huge margin for error that can reduce your pool liners life expectancy when your swimming pool liner is not properly installed. Pool liner replacements should be done by an experienced pool liner installation company with no less than twenty years of on the job experience. This will result in a greater life of your new swimming pool liner. Merodynamic Pools experience with in ground swimming pool vinyl liner replacements just reached our 40th year. Over 5700 in ground pool liners installed in the U.S.A. Merodynamic Pools has mastered the tedious art form of vinyl liner replacement. Also, we must emphasize that In ground Swimming pool liners should only be handled by an experienced swimming pool liner technician with decades of on the job experience!
Furthermore, it is reckless when a pool company says that a do it yourself pool liner is easy in order to get a sale. Above all, they are putting your investment in harms way. Chances are you will call them back for a correct installation.