A pool membrane, also known as an armed membrane or belted liner, is a type of swimming pool lining material designed for durability and waterproofing.
According to the reference provided, a pool membrane consists of two layers of PVC joined together by a thermofusion process with a polyester mesh between both layers. This construction creates a robust and flexible barrier for the pool structure.
Understanding the Structure
The key to the pool membrane's strength and longevity lies in its specific layered composition:
- Outer PVC Layers: These two layers of polyvinyl chloride (PVC) provide the waterproof surface and the primary aesthetic finish.
- Polyester Mesh: Positioned between the two PVC layers, this reinforcement provides dimensional stability, resistance to tearing, and added strength to the overall material.
- Thermofusion Process: This bonding technique fuses the PVC layers to the internal mesh, creating a single, inseparable unit that can withstand the pressure and conditions within a swimming pool.
Purpose and Function
The primary function of a pool membrane is to:
- Waterproof the Pool: It creates a sealed barrier preventing water from escaping the pool structure and protecting the underlying shell (often concrete, block, or steel).
- Provide a Finish: It offers a smooth, non-porous surface that is comfortable to the touch and easy to clean.
- Enhance Durability: The reinforced structure makes it resistant to punctures, tears, and movement in the pool shell.
Unlike traditional painted or tiled surfaces which waterproof the structure itself, the membrane is the waterproofing layer. It's a practical solution for both new pool construction and renovation projects, especially when dealing with potential structural issues in older pools.
