No you can use the pool with old liner. Foxx is strong and the sides will hold without water. The only thing is that you need to keep adding water and eventually the sand on the bottom will wash away.
If your inground pool has a liner it has probably been in it for years. If you drain it completely you will shift the liner. Don't do that. If you have cement sides your coping can probably be fixed after replacing the metal rail. If the pool has metal sides and wood framework and 40 years old, fill it in and swim at the local pond, you won't like the $$$$$$ it will take to repair it. Most work like this is left to the professionals. You will first have to drain the pool to a sufficient level to affect the repairs. Maybe a complete draining would be better.
Hydrostatic pressure or poor water chemistry. If the watertable is high the liner will float and when the water recedes will create a suction and pinch the liner. If your alkalinity and stabilizer levels are low the sanitizer will not have any molecules to attach to so it goes after the vinyl. The pulls the plastizer out the vinyl and causes it to prematurely fade and wrinkle.
Scale, from high calcium hardness in your pool water
Vermiculite is not a suitable substrate.
Purchasing a pool is a large investment for any homeowner. There are several different types of inground pools available, so selecting the right one can be a challenge. Currently, fiberglass, concrete and vinyl liner inground pools are being sold. Comparing each type can make buying a pool much simpler. Fiberglass inground pools are a great choice for pool buyers. They are pre-constructed at a factory and shipped to the desired location in one piece. A customer simply selects their preferred size and shape from a catalog. Fiberglass pools are typically the most expensive pool on the market, but they last the longest. In the long run, a fiberglass pool will require less repair and fewer chemicals than other pool types. It usually takes only a few weeks to install a fiberglass pool from start to finish. The inside of fiberglass pools is smooth to the touch. For homeowners that desire more freedom designing their pool, then a concrete one would be the best option. Concrete inground pools are currently the most popular on the market. They are custom created by pool builders, which is great for customers who have a difficult yard shape. Concrete is usually less expensive than fiberglass, but requires more care over the years. Unlike fiberglass, a concrete pool is built in stages, so the construction time tends to be longer, usually one to three months. These pools come with a wide variety of finishes, from rough plaster to smooth tile. Less popular are vinyl liner inground pools. These pools are typically sold to the consumer in a kit form and put together by the owner. First, the ground must be excavated to fit the pool, and then it is placed inside. The sides of vinyl liner pools are constructed from steel. Once erected, they will be permanently supported by concrete. A vinyl liner is then spread over the sides and bottom. These pools are very popular in parts of the country where there are cold winters, as they can be easily drained and covered until the weather warms back up. Swimmers enjoy the smooth surface of the liner, but it can accrue more damage than other pools types.
we are a well known swimming pool construction and renovation company in southport, nc. we'd be happy to help but would need much more information in order to help you. but generally what you are describing is a project that does not lend itself very well to do-it-yourself fixes. it is heavy and tedious requiring machinery and a degree of expertise to pull off a repair renovation. contact us anytime. we'll try to help. 910-457-9145
there are THREE fastners that hold the liner in place. they are located about mid-way up on the sides of the helmet. they are REMOVED from the INSIDE of the helmet
Probably in barns, driveways, sides of roads. ect. anywhere that the repair could be made
The experts at Advanced Pool Coatings have been installing fiberglass coatings over vinyl liner pools for over 30 years. You can read more at: http://www.advancedpoolcoatings.com.