What causes hollow spots in pool plaster? Hollow spots in pool plaster can look like spider web or crows foot pattern. They can also look like a bulge and if you step on it, it might bounce slightly. Step too hard and it will break and become a real eyesore. Calcium, visible to the eye, will line the cracks of hollow spots. Hollow spots can affect your original plaster; however, hollow spots in pool plaster are far more common in pools that have been replastered. It is also common for pools that have hollow spots in their plaster to also have structural issues. Hollow spots are bad for your pool.
Regardless if the pool has original plaster or has been replastered, the cause of the hollow spots in pool plaster is very simple. Poorly prepared substrates are the biggest culprit. Hollow plaster is synonymous with homebrew bond coats and poorly cleaned substrates. It is odd that most plaster companies tell homeowners that they will sound/check the pool for hollow spots and remove them. They then cover that surface with homebrew bond coat that causes hollow spots. To be clear, homebrew bond coats cause hollow spots. Why do they install your new plaster investment over homebrew bond coats? When will they learn?
G&B’s Hydro Demo Replaster Prep process exceeds industry standards. We hit every square inch of the old plaster surface with up to 40,000 PSI Ultra High Water pressure (UHP). UHP is unmatched with its ability to clean and create a superior profile on the substrate. Our prep process allows G&B to give a 5 year warranty on every pool we replaster.
We guarantee our work LONGER than any other company. G&B’s 5 year warranty protects you better than any manufacturer’s warranty offered by other plaster companies. These companies are attempting to mislead you by portraying the manufacturer’s warranty as their own. Your planned investment in your pool is respected here at G&B; that is why we use the best process and the best material.