Yes, any hole with proper rebar ties can convert..just look at it as the hole has been already dug for you...This is also vice-versa..you can make a gunite pool a vinyle liner I am a owner of a Pool building company in Atlanta Ga.from A Pool Contractor
This project is essentially a full gunite pool construction with the exception that no excavation is required. The angles of the deep end hopper make the steel and concrete stages more time consuming than a traditional gunite pool. The price for this job would be very close to a new pool construction less excavation costs which can be around $5000.
As a professional pool builder that has shot gunite pool shells inside existing vinyl liner pools, I can tell you that the job is actually harder than building a pool from scratch. If your just going to shoot inside the existing hole the pool will end up being smaller and shallower as well to accommodate for the 6 inches of gunite that will be added. All of the existing returns have to be cut out and extended to allow for this, the main drain should be dug up and replaced with a gunite drain, and the skimmer should be cut out and replaced with a gunite skimmer. the deck should be cut back, but alternately coping can be installed to line back up with the existing deck. The deck will have to be cut out around the vinyl skimmer to make way for the gunite skimmer replacement, I have seen people not replace the skimmer but this leaves a good place for a future leak, I wouldn't recommend it. The plastic steps will have to be removed as well. You may want the bottom dug out so it can be made deeper and larger as the hopper area on most vinyl pools are small and tapered. It's a job to say the least, but it is possible. Cost wise it will probably run more than building a gunite pool from scratch. The only things you are using over is the deck, the hole, and the Plumbing.For more information howtobuildaningroundpool.com
Another option is to have a new fiberglass surface applied to your pool. You will get a much longer life out of your pool, and won't be replacing vinyl liners ever again! You can read more at: http://www.advancedpoolcoatings.com
As long as the vinyl liner pool is inground, it can be converted. But you'll probably have to remove all of the vinyl pool elements until you have reduced the pool to a big hole in the ground and then start from there. All it takes is time and money!
If it was working ok before you lined it and you have no problems removing the liner you should have no problems.
The reality is that the average inground pool liner will last 8-12 years.
Our experience shows that gunite or fiberglass are good. Gunite would probably last the longest. CONCRETE tends to crack over years with normal ground shifts. Had two pools with concrete, so many cracks after 10 years, buried the thing, the repair costs were astronomical.
You can use the same hole in the ground for both a vinyl liner pool and a gunite pool. You should not need a new hole dug.
Its a oval shape pool, 19,3'X43' size, 4' deep at one end, after 12' slopes down to 10' deep.
No. Replace the liner.
Whats yer question?
They don't make them for in ground.
Filter it then swim in it.
air pocket behind pool liner inground