Thousand Oaks Pool Remodel: Old Finish Removal and Interior Surface Upgrade Removing the Old Finish The top photo shows the pool immediately after we removed the old interior finish. When plaster or pebble reaches the end of its lifespan, you must remove it completely. Resurfacing over failing material causes bonding problems and early deterioration. For this Thousand Oaks pool remodel, we demolished the worn finish down to a solid substrate. This step ensures strong adhesion and long-term dur...