There is a good chance that your pool has accumulated leaves, dirt and other debris. There might be rust spots that you need to remove before moving on. Any residue, even the smallest, can cause damage to your resurfacing project. It's a good idea pressure washing the pool after you have removed all the debris. This will remove any algae and stains that may remain.
No matter what pool you have they all will need to be surfaced. Here are the details about costs, materials, and methods.
Most pool surfaces will require a specific primer epoxy before applying the refinishing solution. Apply the primer following the instructions on the package, using masks and gloves to block any harmful fumes and chemicals. Paint the entire surface of the pool with the primer and let it dry entirely before continuing. This process should take about two to four hours, depending on the size of your pool.