Osmosis Blisters
Understanding Osmosis Blisters in Fibreglass Swimming Pools
Osmosis blisters in fibreglass swimming pools occur due to a chemical process where water penetrates the fibreglass surface. Here’s a simple explanation of how this happens:
Moisture Infiltration: Over time, water can seep through tiny imperfections in the pool’s gelcoat or surface layer. This is often caused by cracks, scratches, or general wear and tear.
Chemical Reaction: As water penetrates the fibreglass, it interacts with the materials inside, such as resins and additives. This interaction can cause the water to mix with these materials, creating a buildup of pressure.
Formation of Blisters: When the pressure becomes too great, it results in the formation of blisters on the surface of the pool. These blisters are pockets of water trapped between the gelcoat and the fibreglass structure.
Visual Signs: Osmosis blisters typically appear as raised bubbles or bumps on the pool’s surface. If left untreated, they can lead to further deterioration of the fibreglass shell and lead to expensive repairs.
Understanding the causes and implications of osmosis blisters is essential for maintaining the integrity of your fibreglass pool. Regular inspections and maintenance can help prevent these issues and prolong the life of your pool. If you notice any signs of blisters, it’s advisable to contact a professional for assessment and repair.