To resurface a swimming pool, you must first drain it. Before you begin, you should check with your local government for permissions to drain the pool and any permits required to resurface the pool. Rent a sump pump to drain all water from your pool. Before proceeding, ensure that the pool has been completely dried.
The cost of replacing a vinyl pool by a fiberglass pool is usually between $50,000 to $65,000. As long as you take good care of your fiberglass pool, it will last longer and cost less to repair.
Like fiberglass, plaster reacts with poolwater over time. This means that you may need to add more chemicals to ensure proper water chemistry. This can be overcome by adding a "filler", to your plaster mix.