The most common type of inground pools throughout the United States are plaster pools. The problem, however, is that a time comes when the plaster of the swimming pool becomes pitted and old. This happens due to age, as well as years of harsh chemicals chipping away at the finish. Often times, the deterioration of plaster happens because of improper water balance. It can also be caused by the application or mix of the plaster. Since plaster is a natural product, it’s meant to degrade over time. While plaster is hard enough to have durability, it is soft enough for a thin layer on the top to be removed by acid washing.
So how often should a pool be replastered? Many people replaster their swimming pool during their pool’s renovation, which is around every twenty years. Some pool owners replaster their pools more often than this to change colors or to maintain a nicer finish. Cracks and bare spots can be a concern and should be fixed, however, the decision to replaster usually comes from an aesthetic viewpoint. Plaster will eventually dull and stain. Once you get tired of looking at it, it may be time to consider replastering your swimming pool.
The feel and look of your swimming pool can be reasons to replaster your swimming pool. While acid washing the plaster can get rid of stains, it can only be done so many times. Standard plaster for inground pools is a natural product, as such, preventing stains from happening is nearly impossible. Variations in application methods, speed, temperature, and mix of the plaster can all affect its final appearance. Once you reached a point where the plaster of your swimming pool is too stained or dull, it may be time to replaster the pool.
The actual feel of your pool’s plaster can also be a significant consideration for replastering your swimming pool. Your pool’s plaster finish is supposed to be soft and smooth. Frequent or too strong of acid washing, as well as aggressive chemistry of the water, can create pockets and pits in the surface of the plaster. Plaster that has pitting, known as “etching,” can feels somewhat rough to the touch, provides a place for dirt to hide and algae to attach roots, and can sometimes snag swimsuits. It’s possible to sand down rough plaster if it’s only in a certain spot. If widespread etching happens, however, your pool may need to be replastered.
There are also a few structural reasons that can affect how often a pool should be replastered. Plaster isn’t “structural,” but is instead a waterproof layer that is placed between the pool’s shell and the pool water. The majority of plaster pools are made using Gunite, or Shotcrete. Some older pools were created using concrete or cinder blocks. These materials are all porous and water will “weep” through them. Applying a coat of plaster on top keeps the cement beneath it protected from the water’s effects. Thin or bare spots are a particular concern, and could lead to your pool needing to be replastered.
Author’s short bio:
Authentic Plaster and tile was founded by Diane Pierce and her family 35 years ago in Texas. Their specialty ranges from simple remodels with pool surface, tile, coping to complete pool remodeling in Dallas TX by adding tan ledge, benches, water features and more. Also their own developed and manufactured pool surface material, Hydra Products, is warranted in-house and gives not only material warranty but also labor.