Share
I want to put a drainage grate around the pool for two reasons, 1. To stop water seeping down side of pool wall 2. Collect the water from surface area and store in a tank to return to pool when water evaporates as we are on tank water.
the pool area is 15 x 8 but has minimum fall over the 15m length .
need some advice as the rule of thump would require 150mm fall over that distance.
Welcome to the Bunnings Workshop community @ray-jones. It's wonderful to have you join us, and many thanks for your question about pool drainage.
It sounds like you're on the right track with wanting to install a drainage grate system around the pool. Proper drainage is essential for maintaining both the integrity of the pool structure and the surrounding area, especially if you're looking to collect and store water efficiently.
In this case, since you're aiming to stop water seepage and collect surface water, you'll likely need a drainage system that suits pool environments, such as a proprietary solution designed for pools. Standard drainage grates, like the ones we have in-store, are typically used for collecting rainwater and require a fall to ensure proper water flow. With minimal fall over your 15-metre length, a traditional system might struggle to perform efficiently.
You could look into a custom-designed channel drain or slot drain that works with your specific pool environment. These systems often come with options for level installation and are better equipped to deal with minimal gradients while still promoting adequate water collection and runoff.
When it comes to storing the water for reuse, make sure the system you choose is compatible with water tank collection. A well-planned installation might include filters or silt traps to keep the water clean before it gets stored and returned to your pool.
For this project, it's essential to ensure that your selected drainage grate can handle not just rainwater but also chlorinated water, which may require a more specialised material. I'd recommend consulting a pool drainage expert to ensure the system meets your needs.
I'll add that the amount of water exiting the pool, even with kids playing, would be minimal unless it was filled right to the brim. There might not be enough to collect to warranty a customised collection system. Such grates are typically used on infinity pools where significant water is lost over the edge. With that said, you might only require standard rainwater drainage to stop surface water from the tiles spilling over the edge in heavy rainfall.
Please let me know if you have any questions.
Mitchell
